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(cherry picked from commit 645c43ba60d29ca676a4323ccc5ca16c6bd8127a)
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(cherry picked from commit 3870247517741ce23e2fcee8aaa1d194f0ad621b)
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(cherry picked from commit 03eae30b27433055ddc10f09fc134b83e9bd6cec)
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found using "git ls-files *.py | xargs pylint | grep W0611"
(cherry picked from commit 274b2da242acd1f1f64ff1dee471e34295137c5f)
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(cherry picked from commit e257155aea09b906d8784cb6143d3ab27578c4a8)
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firewall|nat rules.
(cherry picked from commit 3c0634e572ffdecaf24a9dac16678427f22761ab)
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appropiate commands to populate such groups using source and destination address of the packet.
(cherry picked from commit 6ce5fedb602c5ea0df52049a5e9c4fb4f5a86122)
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This is a combined backport for all accumulated changes done to the firewall
subsystem on the current branch.
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deployments in cgnat. (#2694)
(cherry picked from commit 3fc76505d0642c32a3eae9c0ce6ab3dd2ec32dbd)
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Remove the word "error" from a Warning only message to not irritate the user.
(cherry picked from commit 9f863a50f1ac6c81782df6c43f7df816d9e11b16)
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firewal, nat and nat66.
(cherry picked from commit 51abbc0f1b2ccf4785cf7f29f1fe6f4af6007ee6)
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interface-name|interface-group as in firewall.
(cherry picked from commit 2f2c3fa22478c7ba2e116486d655e07df878cdf4)
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while configuring dNAT|sNAT rule
(cherry picked from commit ec5437913e489f40fea6bab89a6bb5f565cd1ab7)
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T5319: remove workarounds for incorrect defaults in config-mode scripts
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T5014: nat: add source and destination nat options for configuring lo…
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Change code for new syntax
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balance within a single rule.
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* T5195: move run, cmd, call, rc_cmd helper to vyos.utils.process
* T5195: use read_file and write_file implementation from vyos.utils.file
Changed code automatically using:
find . -type f -not -path '*/\.*' -exec sed -i 's/^from vyos.util import read_file$/from vyos.utils.file import read_file/g' {} +
find . -type f -not -path '*/\.*' -exec sed -i 's/^from vyos.util import write_file$/from vyos.utils.file import write_file/g' {} +
* T5195: move chmod* helpers to vyos.utils.permission
* T5195: use colon_separated_to_dict from vyos.utils.dict
* T5195: move is_systemd_service_* to vyos.utils.process
* T5195: fix boot issues with missing imports
* T5195: move dict_search_* helpers to vyos.utils.dict
* T5195: move network helpers to vyos.utils.network
* T5195: move commit_* helpers to vyos.utils.commit
* T5195: move user I/O helpers to vyos.utils.io
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* Rename table to vyos_nat
* Add static NAT smoketest
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* Rename table to vyos_nat
* Refactor tests to use `verify_nftables` format
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Move nftables nat configuration from /tmp to /run
As we have for other services like firewall, conntrack
Don't remove the config file '/run/nftables_nat.conf' after commit
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Ability to set static NAT (one-to-one) in one rule
set nat static rule 10 destination address '203.0.113.0/24'
set nat static rule 10 inbound-interface 'eth0'
set nat static rule 10 translation address '192.0.2.0/24'
It will be enough for PREROUTING and POSTROUTING rules
Use a separate table 'vyos_static_nat' as SRC/DST rules and
STATIC rules can have the same rule number
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Commit bb76e8d7f1635 ("nat: T2199: dry-run newly generated config before
install") added support to verify the generated nftables ruleset. Unfortunately
if the verify failed - a Python exception was triggered:
NameError: name 'nftables_ct_file' is not defined
This was due to bad copy/pasting.
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Before installing a new conntrack policy into the OS Kernel, the new policy
should be verified by nftables if it can be loaded at all or if it will fail
to load. There is no need to load a "bad" configuration if we can pre-test it.
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Support a 1:1 or 1:n prefix translation. The following configuration will NAT
source addresses from the 10.2.0.0/16 range to an address from 192.0.2.0/29.
For this feature to work a Linux Kernel 5.8 or higher is required!
vyos@vyos# show nat
source {
rule 100 {
outbound-interface eth1
source {
address 10.2.0.0/16
}
translation {
address 192.0.2.0/29
}
}
}
This results in the nftables configuration:
chain POSTROUTING {
type nat hook postrouting priority srcnat; policy accept;
oifname "eth1" counter packets 0 bytes 0 snat ip prefix to ip saddr map
{ 10.2.0.0/16 : 192.0.2.0/29 } comment "SRC-NAT-100"
}
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The NAT system consists out of nested tag nodes which makes manual parsing very
hard. This is a perfect candidate for migrating this to get_config_dict() as
there is already a smoketest in place.
In addition this should make it easier to add features like static nat/hairpin.
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Depending on the underlaying Kernel version load the corresponding Kernel
module.
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l2tpv3, wireguard, wirelessmodem, nat all require additional Kernel modules
to be present on the system. Each and every interface implemented their own
way of loading a module - by copying code.
Use a generic function, vyos.util.check_kmod() to load any arbitrary kernel
module passed as string or list.
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Rules without a translation address are also valid, they'll modify just
the port and leave the address intact.
This also used to be a valid syntax and it caused an error on upgrade.
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