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Rate limit ssh attempts to WAN zone #120

Merged
merged 9 commits into from
Jan 22, 2015
Merged

Rate limit ssh attempts to WAN zone #120

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2e16b44
Create firewall.user
ranianr Mar 18, 2014
883fd34
Update firewall
ranianr Mar 18, 2014
dd562f2
Update firewall
ranianr Mar 18, 2014
14fd452
Merge branch 'master' of https://github.com/RaniaRho/commotion-router…
Apr 17, 2014
220027a
Fixed typo in /etc/firewall.user
Apr 17, 2014
40f2882
Moved firewall.user rules to /etc/config/firewall.
Apr 17, 2014
e45da0d
Revert "Moved firewall.user rules to /etc/config/firewall."
May 20, 2014
4dac40d
Updating ssh rate limit in firewall.user
May 20, 2014
25b1ef8
Merge branch 'master' into ssh-rate-limit
dismantl Jan 22, 2015
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15 changes: 14 additions & 1 deletion default-files/etc/config/firewall
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Original file line number Diff line number Diff line change
@@ -1,4 +1,3 @@

config defaults
option syn_flood '1'
option input 'DROP'
Expand Down Expand Up @@ -61,6 +60,17 @@ config forwarding
config rule
option src 'wan'
option dest_port '22'
option proto 'tcp'
option state 'NEW'
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There's no 'state' option in the OpenWRT wiki's page about the UCI firewall, as far as I can see. Is this an undocumented option?

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Huh. I could have sworn I read it on one of the openwrt wiki pages or forum posts but now I can't find it. State is supported by iptables. The closest I can find in the UCI documentation is "The iptables rules generated for this section rely on the state match." I must have guessed at it.

option limit '3/min'
option limit_burst '2'
option target 'LOG'

config rule
option src 'wan'
option dest_port '22'
option state 'RELATED'
option state 'ESTABLISHED'
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There seem to be two state options here. Is this intentional (it's sorta valid), or is it supposed to be a list?

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It's intentional. I wasn't totally sure whether I could put two state options in a single config rule, but it seems to work. I could break it out if you want.

option target 'ACCEPT'
option proto 'tcp'

Expand Down Expand Up @@ -167,3 +177,6 @@ config rule
option src 'vpn'
option proto 'icmp'
option target 'ACCEPT'

config include
option path '/etc/firewall.user'