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author | Nicolas Fort <yocasquito@gmail.com> | 2021-07-23 11:17:55 -0300 |
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committer | Nicolas Fort <yocasquito@gmail.com> | 2021-07-23 11:17:55 -0300 |
commit | dbddfe85adaa70552607b38706b39238b465ac4e (patch) | |
tree | 055d0ec7f3018eb008e759c4c6f48a7a540d7ad3 /docs/configuration/policy/index.rst | |
parent | 1fb2465d8cb7197a18daeb46270c3d42e64e3dbe (diff) | |
download | vyos-documentation-dbddfe85adaa70552607b38706b39238b465ac4e.tar.gz vyos-documentation-dbddfe85adaa70552607b38706b39238b465ac4e.zip |
Index file updated and splitted into new files. Indent and lenght on every file was verified
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-rw-r--r-- | docs/configuration/policy/index.rst | 1085 |
1 files changed, 35 insertions, 1050 deletions
diff --git a/docs/configuration/policy/index.rst b/docs/configuration/policy/index.rst index 84b41ed6..fc1c1366 100644 --- a/docs/configuration/policy/index.rst +++ b/docs/configuration/policy/index.rst @@ -6,1061 +6,46 @@ Policy ###### -Policies are used for filtering and traffic management. With policies, network administrators could filter and treat traffic +Policies are used for filtering and traffic management. With policies, network +administrators could filter and treat traffic according to their needs. -There could be a wide range of routing policies. Some examples are listed below: +There could be a wide range of routing policies. Some examples are listed +below: * Filter traffic based on source/destination address. * Set some metric to routes learned from a particular neighbor. -* Set some attributes (like AS PATH or Community value) to advertised routes to neighbors. -* Prefer a specific routing protocol routes over another routing protocol running on the same router. - -Policies, in VyOS, are implemented using FRR filtering and route maps. Detailed information of FRR could be found in http://docs.frrouting.org/ - -************* -Configuration -************* - -.. _policy-filter: - -Filter -====== - -Filtering is used for both input and output of the routing information. Once filtering is defined, it can be applied in -any direction. -VyOS makes filtering possible using acls and prefix lists. - -policy access-list ------------------- - -Basic filtering could be done by access-list. - -.. cfgcmd:: set policy access-list <acl_number> - -This command creates the new access list policy, where <acl_number> must be a number from 1 to 2699. - -.. cfgcmd:: set policy access-list <acl_number> description <text> - -Set description for the access list. - -.. cfgcmd:: set policy access-list <acl_number> rule <1-65535> action <permit|deny> - -This command creates a new rule in the access list and defines an action. - -.. cfgcmd:: set policy access-list <acl_number> rule <1-65535> <destination|source> <any|host|inverse-mask|network> - -This command defines matching parameters for access list rule. Matching criteria could be applied to destinarion or source -parameters: - -* any: any IP address to match. -* host: single host IP address to match. -* inverse-match: network/netmask to match (requires network be defined). -* network: network/netmask to match (requires inverse-match be defined). - -policy access-list6 -------------------- - -Basic filtering could also be applied to IPv6 traffic. - -.. cfgcmd:: set policy access-list6 <text> - -This command creates the new IPv6 access list, identified by <text> - -.. cfgcmd:: set policy access-list6 <text> description <text> - -Set description for the IPv6 access list. - -.. cfgcmd:: set policy access-list6 <text> rule <1-65535> action <permit|deny> - -This command creates a new rule in the IPv6 access list and defines an action. - -.. cfgcmd:: set policy access-list6 <text> rule <1-65535> source <any|exact-match|network> - -This command defines matching parameters for IPv6 access list rule. Matching criteria could be applied to source parameters: - -* any: any IPv6 address to match. -* exact-match: exact match of the network prefixes. -* network: network/netmask to match (requires inverse-match be defined) BUG, NO inver-match option in access-list6 - -policy prefix-list ------------------- - -Prefix lists provides the most powerful prefix based filtering mechanism. In addition to access-list functionality, -ip prefix-list has prefix length range specification. - -If no ip prefix list is specified, it acts as permit. If ip prefix list is defined, and no match is found, -default deny is applied. - -.. cfgcmd:: set policy prefix-list <text> - -This command creates the new prefix-list policy, identified by <text>. - -.. cfgcmd:: set policy prefix-list <text> description <text> - -Set description for the prefix-list policy. - -.. cfgcmd:: set policy prefix-list <text> rule <1-65535> action <permit|deny> - -This command creates a new rule in the prefix-list and defines an action. - -.. cfgcmd:: set policy prefix-list <text> rule <1-65535> description <text> - -Set description for rule in the prefix-list. - -.. cfgcmd:: set policy prefix-list <text> rule <1-65535> prefix <x.x.x.x/x> - -Prefix to match against. - -.. cfgcmd:: set policy prefix-list <text> rule <1-65535> ge <0-32> - -Netmask greater than length. - -.. cfgcmd:: set policy prefix-list <text> rule <1-65535> le <0-32> - -Netmask less than lenght - -policy prefix-list6 -------------------- - -Prefix list filtering could also be applied to IPv6 traffic. - -.. cfgcmd:: set policy prefix-list6 <text> - -This command creates the new IPv6 prefix-list policy, identified by <text>. - -.. cfgcmd:: set policy prefix-list6 <text> description <text> - -Set description for the IPv6 prefix-list policy. - -.. cfgcmd:: set policy prefix-list6 <text> rule <1-65535> action <permit|deny> - -This command creates a new rule in the IPv6 prefix-list and defines an action. - -.. cfgcmd:: set policy prefix-list6 <text> rule <1-65535> description <text> - -Set description for rule in IPv6 prefix-list. - -.. cfgcmd:: set policy prefix-list6 <text> rule <1-65535> prefix <h:h:h:h:h:h:h:h/x> - -IPv6 prefix. - -.. cfgcmd:: set policy prefix-list6 <text> rule <1-65535> ge <0-128> - -Netmask greater than length. - -.. cfgcmd:: set policy prefix-list6 <text> rule <1-65535> le <0-128> - -Netmask less than lenght - -Route -====== - -Route policies are defined in this section. This route policies can then be associated to interfaces. - -policy route ------------- - -.. cfgcmd:: set policy route <text> - -This command creates a new route policy, identified by <text>. - -.. cfgcmd:: set policy route <text> description <text> - -Set description for the route policy. - -.. cfgcmd:: set policy route <text> enable-default-log - -Option to log packets hitting default-action. - -.. cfgcmd:: set policy route <text> rule <1-9999> description <text> - -Set description for rule in route policy. - -.. cfgcmd:: set policy route <text> rule <1-9999> action drop - -Set rule action to drop. - -.. cfgcmd:: set policy route <text> rule <1-9999> destination address <match_criteria> - -Set match criteria based on destination address, where <match_criteria> could be: - -* <x.x.x.x>: IP address to match. -* <x.x.x.x/x>: Subnet to match. -* <x.x.x.x>-<x.x.x.x>: IP range to match. -* !<x.x.x.x>: Match everything except the specified address. -* !<x.x.x.x/x>: Match everything except the specified subnet. -* !<x.x.x.x>-<x.x.x.x>: Match everything except the specified range. - -.. cfgcmd:: set policy route <text> rule <1-9999> destination group <address-group|network-group|port-group> <text> - -Set destination match criteria based on groups, where <text> would be the group name/identifier. - -.. cfgcmd:: set policy route <text> rule <1-9999> destination port <match_criteria> - -Set match criteria based on destination port, where <match_criteria> could be: - -* <port name>: Named port (any name in /etc/services, e.g., http). -* <1-65535>: Numbered port. -* <start>-<end>: Numbered port range (e.g., 1001-1005). - -Multiple destination ports can be specified as a comma-separated list. The whole list can also be "negated" using '!'. -For example: '!22,telnet,http,123,1001-1005' - -.. cfgcmd:: set policy route <text> rule <1-9999> disable - -Option to disable rule. - -.. cfgcmd:: set policy route <text> rule <1-9999> fragment <match-grag|match-non-frag> - -Set IP fragment match, where: - -* match-frag: Second and further fragments of fragmented packets. -* match-non-frag: Head fragments or unfragmented packets. - -.. cfgcmd:: set policy route <text> rule <1-9999> icmp <code|type|type-name> - -Set ICMP match criterias, based on code and/or types. Types could be referenced by number or by name. - -.. cfgcmd:: set policy route <text> rule <1-9999> ipsec <match-ipsec|match-none> - -Set IPSec inbound match criterias, where: - -* match-ipsec: match inbound IPsec packets. -* match-none: match inbound non-IPsec packets. - -.. cfgcmd:: set policy route <text> rule <1-9999> limit burst <0-4294967295> - -Set maximum number of packets to alow in excess of rate - -.. cfgcmd:: set policy route <text> rule <1-9999> limit rate <text> - -Set maximum average matching rate. Format for rate: integer/time_unit, where time_unit could be any one of second, minute, -hour or day.For example 1/second implies rule to be matched at an average of once per second. - -.. cfgcmd:: set policy route <text> rule <1-9999> log <enable|disable> - -Option to enable or disable log matching rule. - -.. cfgcmd:: set policy route <text> rule <1-9999> log <text> - -Option to log matching rule. - -.. cfgcmd:: set policy route <text> rule <1-9999> protocol <text|0-255|tcp_udp|all|!protocol> - -Set protocol to match. Protocol name in /etc/protocols or protocol number, or "tcp_udp" or "all". -Also, protocol could be denied by using !. - -.. cfgcmd:: set policy route <text> rule <1-9999> recent <count|time> <1-255|0-4294967295> - -Set parameters for matching recently seen sources. This match could be used by seeting count (source address seen more than -<1-255> times) and/or time (source address seen in the last <0-4294967295> seconds). - -.. cfgcmd:: set policy route <text> rule <1-9999> set dscp <0-63> - -Set packet modifications: Packet Differentiated Services Codepoint (DSCP) - -.. cfgcmd:: set policy route <text> rule <1-9999> set mark <1-2147483647> - -Set packet modifications: Packet marking - -.. cfgcmd:: set policy route <text> rule <1-9999> set table <main|1-200> - -Set packet modifications: Routing table to forward packet with. - -.. cfgcmd:: set policy route <text> rule <1-9999> set tcp-mss <500-1460> - -Set packet modifications: Explicitly set TCP Maximum segment size value. - -.. cfgcmd:: set policy route <text> rule <1-9999> source address <match_criteria> - -Set match criteria based on source address, where <match_criteria> could be: - -* <x.x.x.x>: IP address to match. -* <x.x.x.x/x>: Subnet to match. -* <x.x.x.x>-<x.x.x.x>: IP range to match. -* !<x.x.x.x>: Match everything except the specified address. -* !<x.x.x.x/x>: Match everything except the specified subnet. -* !<x.x.x.x>-<x.x.x.x>: Match everything except the specified range. - -.. cfgcmd:: set policy route <text> rule <1-9999> source group <address-group|network-group|port-group> <text> - -Set source match criteria based on groups, where <text> would be the group name/identifier. - -.. cfgcmd:: set policy route <text> rule <1-9999> source port <match_criteria> - -Set match criteria based on source port, where <match_criteria> could be: - -* <port name>: Named port (any name in /etc/services, e.g., http). -* <1-65535>: Numbered port. -* <start>-<end>: Numbered port range (e.g., 1001-1005). - -Multiple source ports can be specified as a comma-separated list. The whole list can also be "negated" using '!'. -For example: '!22,telnet,http,123,1001-1005' - -.. cfgcmd:: set policy route <text> rule <1-9999> state <established|invalid|new|related> <disable|enable> - -Set match criteria based on session state. - -.. cfgcmd:: set policy route <text> rule <1-9999> tcp flags <text> - -Set match criteria based on tcp flags. Allowed values for TCP flags: SYN ACK FIN RST URG PSH ALL -When specifying more than one flag, flags should be comma-separated. -For example : value of 'SYN,!ACK,!FIN,!RST' will only match packets with the SYN flag set, and the ACK, FIN and RST flags unset. - -.. cfgcmd:: set policy route <text> rule <1-9999> time monthdays <text> - -Set monthdays to match rule on. Format for monthdays: 2,12,21. -To negate add ! at the front eg. !2,12,21 - -.. cfgcmd:: set policy route <text> rule <1-9999> time startdate <text> - -Set date to start matching rule. Format for date: yyyy-mm-dd. To specify time of date with startdate, append -'T' to date followed by time in 24 hour notation hh:mm:ss. For eg startdate -value of 2009-01-21T13:30:00 refers to 21st Jan 2009 with time 13:30:00. - -.. cfgcmd:: set policy route <text> rule <1-9999> time starttime <text> - -Set time of day to start matching rule. Format of time: hh:mm:ss using 24 hours notation. - -.. cfgcmd:: set policy route <text> rule <1-9999> time stopdate <text> - -Set date to stop matching rule. Format for date: yyyy-mm-dd. To specify time of date with stopdate, append -'T' to date followed by time in 24 hour notation hh:mm:ss. For eg startdate -value of 2009-01-21T13:30:00 refers to 21st Jan 2009 with time 13:30:00. - -.. cfgcmd:: set policy route <text> rule <1-9999> time stoptime <text> - -Set time of day to stop matching rule. Format of time: hh:mm:ss using 24 hours notation. - -.. cfgcmd:: set policy route <text> rule <1-9999> time utc - -Interpret times for startdate, stopdate, starttime and stoptime to be UTC. - -.. cfgcmd:: set policy route <text> rule <1-9999> time weekdays - -Weekdays to match rule on. Format for weekdays: Mon,Thu,Sat. To negate add ! at the front eg. !Mon,Thu,Sat. - - -policy ipv6-route ------------------ - -IPv6 route policies are defined in this section. This route policies can then be associated to interfaces. - -.. cfgcmd:: set policy ipv6-route <text> - -This command creates a new IPv6 route policy, identified by <text>. - -.. cfgcmd:: set policy ipv6-route <text> description <text> - -Set description for the IPv6 route policy. - -.. cfgcmd:: set policy ipv6-route <text> enable-default-log - -Option to log packets hitting default-action. - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> action drop - -Set rule action to drop. - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> description <text> - -Set description for rule in IPv6 route policy. - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> destination address <match_criteria> - -Set match criteria based on destination IPv6 address, where <match_criteria> could be: - -* <h:h:h:h:h:h:h:h>: IPv6 address to match. -* <h:h:h:h:h:h:h:h/x>: IPv6 prefix to match. -* <h:h:h:h:h:h:h:h>-<h:h:h:h:h:h:h:h>: IPv6 range to match. -* !<h:h:h:h:h:h:h:h>: Match everything except the specified address. -* !<h:h:h:h:h:h:h:h/x>: Match everything except the specified prefix. -* !<h:h:h:h:h:h:h:h>-<h:h:h:h:h:h:h:h>: Match everything except the specified range. - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> destination port <match_criteria> - -Set match criteria based on destination port, where <match_criteria> could be: - -* <port name>: Named port (any name in /etc/services, e.g., http). -* <1-65535>: Numbered port. -* <start>-<end>: Numbered port range (e.g., 1001-1005). - -Multiple destination ports can be specified as a comma-separated list. The whole list can also be "negated" using '!'. -For example: '!22,telnet,http,123,1001-1005' - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> disable - -Option to disable rule. - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> icmpv6 type <icmpv6_typ> - -Set ICMPv6 match criterias, based on ICMPv6 type/code name. - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> ipsec <match-ipsec|match-none> - -Set IPSec inbound match criterias, where: - -* match-ipsec: match inbound IPsec packets. -* match-none: match inbound non-IPsec packets. - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> limit burst <0-4294967295> - -Set maximum number of packets to alow in excess of rate - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> limit rate <text> - -Set maximum average matching rate. Format for rate: integer/time_unit, where time_unit could be any one of second, minute, -hour or day.For example 1/second implies rule to be matched at an average of once per second. - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> log <enable|disable> - -Option to enable or disable log matching rule. - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> log <text> - -Option to log matching rule. - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> protocol <text|0-255|tcp_udp|all|!protocol> - -Set IPv6 protocol to match. IPv6 protocol name from /etc/protocols or protocol number, or "tcp_udp" or "all". -Also, protocol could be denied by using !. - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> recent <count|time> <1-255|0-4294967295> - -Set parameters for matching recently seen sources. This match could be used by seeting count (source address seen more than -<1-255> times) and/or time (source address seen in the last <0-4294967295> seconds). - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> set dscp <0-63> - -Set packet modifications: Packet Differentiated Services Codepoint (DSCP) - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> set mark <1-2147483647> - -Set packet modifications: Packet marking. - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> set table <main|1-200> - -Set packet modifications: Routing table to forward packet with. - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> set tcp-mss <pmtu|500-1460> - -Set packet modifications: pmtu option automatically set to Path Maximum Transfer Unit minus 60 bytes. Otherwise, expliicitly -set TCP MSS value from 500 to 1460 - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> source address <match_criteria> - -Set match criteria based on IPv6 source address, where <match_criteria> could be: - -* <h:h:h:h:h:h:h:h>: IPv6 address to match -* <h:h:h:h:h:h:h:h/x>: IPv6 prefix to match -* <h:h:h:h:h:h:h:h>-<h:h:h:h:h:h:h:h>: IPv6 range to match -* !<h:h:h:h:h:h:h:h>: Match everything except the specified address -* !<h:h:h:h:h:h:h:h/x>: Match everything except the specified prefix -* !<h:h:h:h:h:h:h:h>-<h:h:h:h:h:h:h:h>: Match everything except the specified range - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> source mac-address <MAC_address|!MAC_address> - -Set source match criteria based on MAC address. Declare specific MAC address to match, or match everything except the specified MAC. - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> source port <match_criteria> - -Set match criteria based on source port, where <match_criteria> could be: - -* <port name>: Named port (any name in /etc/services, e.g., http). -* <1-65535>: Numbered port. -* <start>-<end>: Numbered port range (e.g., 1001-1005). - -Multiple source ports can be specified as a comma-separated list. The whole list can also be "negated" using '!'. -For example: '!22,telnet,http,123,1001-1005' - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> state <established|invalid|new|related> <disable|enable> - -Set match criteria based on session state. - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> tcp flags <text> - -Set match criteria based on tcp flags. Allowed values for TCP flags: SYN ACK FIN RST URG PSH ALL -When specifying more than one flag, flags should be comma-separated. -For example : value of 'SYN,!ACK,!FIN,!RST' will only match packets with the SYN flag set, and the ACK, FIN and RST flags unset. - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> time monthdays <text> - -Set monthdays to match rule on. Format for monthdays: 2,12,21. -To negate add ! at the front eg. !2,12,21 - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> time startdate <text> - -Set date to start matching rule. Format for date: yyyy-mm-dd. To specify time of date with startdate, append -'T' to date followed by time in 24 hour notation hh:mm:ss. For eg startdate -value of 2009-01-21T13:30:00 refers to 21st Jan 2009 with time 13:30:00. - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> time starttime <text> - -Set time of day to start matching rule. Format of time: hh:mm:ss using 24 hours notation. - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> time stopdate <text> - -Set date to stop matching rule. Format for date: yyyy-mm-dd. To specify time of date with stopdate, append -'T' to date followed by time in 24 hour notation hh:mm:ss. For eg startdate -value of 2009-01-21T13:30:00 refers to 21st Jan 2009 with time 13:30:00. - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> time stoptime <text> - -Set time of day to stop matching rule. Format of time: hh:mm:ss using 24 hours notation. - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> time utc - -Interpret times for startdate, stopdate, starttime and stoptime to be UTC. - -.. cfgcmd:: set policy ipv6-route <text> rule <1-9999> time weekdays - -Weekdays to match rule on. Format for weekdays: Mon,Thu,Sat. To negate add ! at the front eg. !Mon,Thu,Sat. - - - -Route Map -========= - -Route map is a powerfull command, that gives network administrators a very useful and flexible tool for traffic manipulation. - -policy route-map ----------------- - -.. cfgcmd:: set policy route-map <text> - -This command creates a new route-map policy, identified by <text>. - -.. cfgcmd:: set policy route-map <text> description <text> - -Set description for the route-map policy. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> action <permit|deny> - -Set action for the route-map policy. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> call <text> - -Call another route-map policy on match. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> continue <1-65535> - -Jump to a different rule in this route-map on a match. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> description <text> - -Set description for the rule in the route-map policy. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> match as-path <text> - -BGP as-path list to match. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> match community community-list <text> - -BGP community-list to match. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> match community exact-match - -Set BGP community-list to exactly match. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> match extcommunity <text> - -BGP extended community to match. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> match interface <text> - -First hop interface of a route to match. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> match ip address access-list <1-2699> - -IP address of route to match, based on access-list. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> match ip address prefix-list <text> - -IP address of route to match, based on prefix-list. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> match ip nexthop access-list <1-2699> - -IP next-hop of route to match, based on access-list. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> match ip nexthop prefix-list <text> - -IP next-hop of route to match, based on prefix-list. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> match ip route-source access-list <1-2699> - -IP route source of route to match, based on access-list. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> match ip route-source prefix-list <text> - -IP route source of route to match, based on prefix-list. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> match ipv6 address access-list <text> - -IPv6 address of route to match, based on IPv6 access-list. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> match ipv6 address prefix-list <text> - -IPv6 address of route to match, based on IPv6 prefix-list. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> match ipv6 nexthop <h:h:h:h:h:h:h:h> - -Nexthop IPv6 address to match. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> match large-community large-community-list <text> - -Match BGP large communities. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> match local-preference <0-4294967295> - -Match local preference. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> match metric <1-65535> - -Match route metric. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> match origin <egp|igp|incomplete> - -Boarder Gateway Protocol (BGP) origin code to match. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> match peer <x.x.x.x> - -Peer IP address to match. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> match rpki <invalid|notfound|valid> - -Match RPKI validation result. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> match tag <1-65535> - -Route tag to match. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> on-match goto <1-65535> - -Exit policy on match: go to rule <1-65535> - -.. cfgcmd:: set policy route-map <text> rule <1-65535> on-match next - -Exit policy on match: go to next sequence number. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set aggregator <as|ip> <1-4294967295|x.x.x.x> - -BGP aggregator attribute: AS number or IP address of an aggregation. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set as-path-exclude <text> - -Remove ASN(s) from a BGP AS-path attribute. For example "456 64500 45001". - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set as-path-prepend <text> - -Prepend string for a BGP AS-path attribute. For example "64501 64501". - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set atomic-aggregate - -BGP atomic aggregate attribute. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set bgp-extcommunity-rt <aa:nn> - -Set route target value. ExtCommunity in format: asn:value. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set comm-list comm-list <text> - -BGP communities with a community-list. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set comm-list delete - -Delete BGP communities matching the community-list. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set community <aa:bb|local-AS|no-advertise|no-export|internet|additive|none> - -Set BGP community attribute. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set distance <0-255> - -Locally significant administrative distance. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set extcommunity-rt <text> - -Set route target value. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set extcommunity-soo <text> - -Set site of origin value. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set ip-next-hop <x.x.x.x> - -Nexthop IP address. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set ipv6-next-hop <global|local> <h:h:h:h:h:h:h:h> - -Nexthop IPv6 address. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set large-community <text> - -Set BGP large community value. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set local-preference <0-4294967295> - -Set BGP local preference attribute. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set metric <+/-metric|0-4294967295> - -Set destination routing protocol metric. Add or subtract metric, or set metric value. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set metric-type <type-1|type-2> - -Set OSPF external metric-type. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set origin <igp|egp|incomplete> - -Set BGP origin code. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set originator-id <x.x.x.x> - -Set BGP originator ID attribute. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set src <x.x.x.x|h:h:h:h:h:h:h:h> - -Set source IP/IPv6 address for route. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set table <1-200> - -Set prefixes to table. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set tag <1-65535> - -Set tag value for routing protocol. - -.. cfgcmd:: set policy route-map <text> rule <1-65535> set weight <0-4294967295> - -Set BGP weight attribute - - - -BGP filters -=========== - -With policies, BGP filters can be created. - -policy as-path-list -------------------- - -.. cfgcmd:: set policy as-path-list <text> - -Create as-path-policy identified by name <text>. - -.. cfgcmd:: set policy as-path-list <text> description <text> - -Set description for as-path-list policy. - -.. cfgcmd:: set policy as-path-list <text> rule <1-65535> action <permit|deny> - -Set action to take on entries matching this rule. - -.. cfgcmd:: set policy as-path-list <text> rule <1-65535> description <text> - -Set description for rule. - -.. cfgcmd:: set policy as-path-list <text> rule <1-65535> regex <text> - -Regular expression to match against an AS path. For example "64501 64502". - - -policy community-list ---------------------- - -.. cfgcmd:: set policy community-list <text> - -Creat community-list policy identified by name <text>. - -.. cfgcmd:: set policy community-list <text> description <text> - -Set description for community-list policy. - -.. cfgcmd:: set policy community-list <text> rule <1-65535> action <permit|deny> - -Set action to take on entries matching this rule. - -.. cfgcmd:: set policy community-list <text> rule <1-65535> description <text> - -Set description for rule. - -.. cfgcmd:: set policy community-list <text> rule <1-65535> regex <aa:nn|local-AS|no-advertise|no-export|internet|additive> - -Regular expression to match against a community-list. - - -policy extcommunity-list ------------------------- - -.. cfgcmd:: set policy extcommunity-list <text> - -Creat extcommunity-list policy identified by name <text>. - -.. cfgcmd:: set policy extcommunity-list <text> description <text> - -Set description for extcommunity-list policy. - -.. cfgcmd:: set policy extcommunity-list <text> rule <1-65535> action <permit|deny> - -Set action to take on entries matching this rule. - -.. cfgcmd:: set policy extcommunity-list <text> rule <1-65535> description <text> - -Set description for rule. - -.. cfgcmd:: set policy extcommunity-list <text> rule <1-65535> regex <text> - -Regular expression to match against an extended community list, where text could be: - -* <aa:nn:nn>: Extended community list regular expression. -* <rt aa:nn:nn>: Route Target regular expression. -* <soo aa:nn:nn>: Site of Origin regular expression. - - -policy large-community-list ---------------------------- - -.. cfgcmd:: set policy large-community-list <text> - -Creat large-community-list policy identified by name <text>. - -.. cfgcmd:: set policy large-community-list <text> description <text> - -Set description for large-community-list policy. - -.. cfgcmd:: set policy large-community-list <text> rule <1-65535> action <permit|deny> - -Set action to take on entries matching this rule. - -.. cfgcmd:: set policy large-community-list <text> rule <1-65535> description <text> - -Set description for rule. - -.. cfgcmd:: set policy large-community-list <text> rule <1-65535> regex <aa:nn:nn> - -Regular expression to match against a large community list. - - - -Local Route -=========== - -Policies for local traffic are defined in this section. - -policy local-route ------------------- - -.. cfgcmd:: set policy local-route rule <1-32765> set table <1-200|main> - -Set routing table to forward packet to. - -.. cfgcmd:: set policy local-route rule <1-32765> source <x.x.x.x|x.x.x.x/x> - -Set source address or prefix to match. - - - - - - - - - -************* +* Set some attributes (like AS PATH or Community value) to advertised routes + to neighbors. +* Prefer a specific routing protocol routes over another routing protocol + running on the same router. + +Policies, in VyOS, are implemented using FRR filtering and route maps. Detailed +information of FRR could be found in http://docs.frrouting.org/ + +*************** +Policy Sections +*************** + +.. toctree:: + :maxdepth: 1 + :includehidden: + + access-list + prefix-list + route + route-map + bgp-policies + local-route + +******** Examples -************* - - -Example -======= - -**Policy definition:** - -.. code-block:: none - - # Create policy - set policy route-map setmet rule 2 action 'permit' - set policy route-map setmet rule 2 set as-path-prepend '2 2 2' - - # Apply policy to BGP - set protocols bgp local-as 1 - set protocols bgp neighbor 203.0.113.2 address-family ipv4-unicast route-map import 'setmet' - set protocols bgp neighbor 203.0.113.2 address-family ipv4-unicast soft-reconfiguration 'inbound' - -Using 'soft-reconfiguration' we get the policy update without bouncing the -neighbor. - -**Routes learned before routing policy applied:** - -.. code-block:: none - - vyos@vos1:~$ show ip bgp - BGP table version is 0, local router ID is 192.168.56.101 - Status codes: s suppressed, d damped, h history, * valid, > best, i - internal, - r RIB-failure, S Stale, R Removed - Origin codes: i - IGP, e - EGP, ? - incomplete - - Network Next Hop Metric LocPrf Weight Path - *> 198.51.100.3/32 203.0.113.2 1 0 2 i < Path - - Total number of prefixes 1 - -**Routes learned after routing policy applied:** - -.. code-block:: none - - vyos@vos1:~$ show ip bgp - BGP table version is 0, local router ID is 192.168.56.101 - Status codes: s suppressed, d damped, h history, * valid, > best, i - internal, - r RIB-failure, S Stale, R Removed - Origin codes: i - IGP, e - EGP, ? - incomplete - - Network Next Hop Metric LocPrf Weight Path - *> 198.51.100.3/32 203.0.113.2 1 0 2 2 2 2 i - - Total number of prefixes 1 - vyos@vos1:~$ - -You now see the longer AS path. - - - -.. _routing-pbr: - -### -PBR -### - -:abbr:`PBR (Policy-Based Routing)` allowing traffic to be assigned to -different routing tables. Traffic can be matched using standard 5-tuple -matching (source address, destination address, protocol, source port, -destination port). - -Transparent Proxy -================= - -The following example will show how VyOS can be used to redirect web -traffic to an external transparent proxy: - -.. code-block:: none - - set policy route FILTER-WEB rule 1000 destination port 80 - set policy route FILTER-WEB rule 1000 protocol tcp - set policy route FILTER-WEB rule 1000 set table 100 - -This creates a route policy called FILTER-WEB with one rule to set the -routing table for matching traffic (TCP port 80) to table ID 100 -instead of the default routing table. - -To create routing table 100 and add a new default gateway to be used by -traffic matching our route policy: - -.. code-block:: none - - set protocols static table 100 route 0.0.0.0/0 next-hop 10.255.0.2 - -This can be confirmed using the ``show ip route table 100`` operational -command. - -Finally, to apply the policy route to ingress traffic on our LAN -interface, we use: - -.. code-block:: none - - set interfaces ethernet eth1 policy route FILTER-WEB - - -Multiple Uplinks -================ - -VyOS Policy-Based Routing (PBR) works by matching source IP address -ranges and forwarding the traffic using different routing tables. - -Routing tables that will be used in this example are: - -* ``table 10`` Routing table used for VLAN 10 (192.168.188.0/24) -* ``table 11`` Routing table used for VLAN 11 (192.168.189.0/24) -* ``main`` Routing table used by VyOS and other interfaces not - participating in PBR - -.. figure:: /_static/images/pbr_example_1.png - :scale: 80 % - :alt: PBR multiple uplinks - - Policy-Based Routing with multiple ISP uplinks - (source ./draw.io/pbr_example_1.drawio) - -Add default routes for routing ``table 10`` and ``table 11`` - -.. code-block:: none - - set protocols static table 10 route 0.0.0.0/0 next-hop 192.0.2.1 - set protocols static table 11 route 0.0.0.0/0 next-hop 192.0.2.2 - -Add policy route matching VLAN source addresses - -.. code-block:: none - - set policy route PBR rule 20 set table '10' - set policy route PBR rule 20 description 'Route VLAN10 traffic to table 10' - set policy route PBR rule 20 source address '192.168.188.0/24' - - set policy route PBR rule 30 set table '11' - set policy route PBR rule 30 description 'Route VLAN11 traffic to table 11' - set policy route PBR rule 30 source address '192.168.189.0/24' - -Apply routing policy to **inbound** direction of out VLAN interfaces - -.. code-block:: none - - set interfaces ethernet eth0 vif 10 policy route 'PBR' - set interfaces ethernet eth0 vif 11 policy route 'PBR' - - -**OPTIONAL:** Exclude Inter-VLAN traffic (between VLAN10 and VLAN11) -from PBR - -.. code-block:: none - - set policy route PBR rule 10 description 'VLAN10 <-> VLAN11 shortcut' - set policy route PBR rule 10 destination address '192.168.188.0/24' - set policy route PBR rule 10 destination address '192.168.189.0/24' - set policy route PBR rule 10 set table 'main' - -These commands allow the VLAN10 and VLAN20 hosts to communicate with -each other using the main routing table. - -Local route -=========== - -The following example allows VyOS to use :abbr:`PBR (Policy-Based Routing)` -for traffic, which originated from the router itself. That solution for multiple -ISP's and VyOS router will respond from the same interface that the packet was -received. Also, it used, if we want that one VPN tunnel to be through one -provider, and the second through another. - -* ``203.0.113.254`` IP addreess on VyOS eth1 from ISP1 -* ``192.168.2.254`` IP addreess on VyOS eth2 from ISP2 -* ``table 10`` Routing table used for ISP1 -* ``table 11`` Routing table used for ISP2 - - -.. code-block:: none - - set policy local-route rule 101 set table '10' - set policy local-route rule 101 source '203.0.113.254' - set policy local-route rule 102 set table '11' - set policy local-route rule 102 source '192.0.2.254' - set protocols static table 10 route 0.0.0.0/0 next-hop '203.0.113.1' - set protocols static table 11 route 0.0.0.0/0 next-hop '192.0.2.2' - -Add multiple source IP in one rule with same priority - -.. code-block:: none +******** - set policy local-route rule 101 set table '10' - set policy local-route rule 101 source '203.0.113.254' - set policy local-route rule 101 source '203.0.113.253' - set policy local-route rule 101 source '198.51.100.0/24' +Examples of policies usage: +.. toctree:: + :maxdepth: 1 + :includehidden: + + examples
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