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| author | Yuxiang Zhu <vfreex@gmail.com> | 2022-07-09 17:38:29 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-07-09 11:38:29 +0200 |
| commit | 07a4920b17c3741b50ffcb596d4433b54f7e529e (patch) | |
| tree | 9b1a886424fe862b31bfd612cf3944b30bfc73ba /python/vyos | |
| parent | 0e761c303145d2440a9ecd730c530333ef7b777f (diff) | |
| download | vyos-1x-07a4920b17c3741b50ffcb596d4433b54f7e529e.tar.gz vyos-1x-07a4920b17c3741b50ffcb596d4433b54f7e529e.zip | |
ip: T4517: add option to enable directed broadcast forwarding
Directed broadcast is described in rfc1812#section-5.3.5.2 and rfc2644.
By default Linux kernel doesn't forward directed broadcast
packets unless both of `/proc/sys/net/ipv4/conf/all/bc_forwarding`
and `/proc/sys/net/ipv4/conf/$iface/bc_forwarding` are set to 1.
Diffstat (limited to 'python/vyos')
| -rw-r--r-- | python/vyos/ifconfig/interface.py | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/python/vyos/ifconfig/interface.py b/python/vyos/ifconfig/interface.py index 22441d1d2..33a7f9a2d 100644 --- a/python/vyos/ifconfig/interface.py +++ b/python/vyos/ifconfig/interface.py @@ -168,6 +168,10 @@ class Interface(Control): 'validate': assert_boolean, 'location': '/proc/sys/net/ipv4/conf/{ifname}/forwarding', }, + 'ipv4_directed_broadcast': { + 'validate': assert_boolean, + 'location': '/proc/sys/net/ipv4/conf/{ifname}/bc_forwarding', + }, 'rp_filter': { 'validate': lambda flt: assert_range(flt,0,3), 'location': '/proc/sys/net/ipv4/conf/{ifname}/rp_filter', @@ -234,6 +238,9 @@ class Interface(Control): 'ipv4_forwarding': { 'location': '/proc/sys/net/ipv4/conf/{ifname}/forwarding', }, + 'ipv4_directed_broadcast': { + 'location': '/proc/sys/net/ipv4/conf/{ifname}/bc_forwarding', + }, 'rp_filter': { 'location': '/proc/sys/net/ipv4/conf/{ifname}/rp_filter', }, @@ -713,6 +720,13 @@ class Interface(Control): return None return self.set_interface('ipv4_forwarding', forwarding) + def set_ipv4_directed_broadcast(self, forwarding): + """ Configure IPv4 directed broadcast forwarding. """ + tmp = self.get_interface('ipv4_directed_broadcast') + if tmp == forwarding: + return None + return self.set_interface('ipv4_directed_broadcast', forwarding) + def set_ipv4_source_validation(self, value): """ Help prevent attacks used by Spoofing IP Addresses. Reverse path @@ -1498,6 +1512,11 @@ class Interface(Control): value = '0' if (tmp != None) else '1' self.set_ipv4_forwarding(value) + # IPv4 directed broadcast forwarding + tmp = dict_search('ip.enable_directed_broadcast', config) + value = '1' if (tmp != None) else '0' + self.set_ipv4_directed_broadcast(value) + # IPv4 source-validation tmp = dict_search('ip.source_validation', config) value = tmp if (tmp != None) else '0' |