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Add tighter firewall ratelimits

This commit is contained in:
Alex D. 2022-03-11 16:40:15 +00:00
parent ec990cd379
commit 20aa4addc1
Signed by: caskd
GPG Key ID: F92BA85F61F4C173
4 changed files with 7 additions and 7 deletions
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2
config/nftables/APKBUILD
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@ -3,7 +3,7 @@
. ../APKBUILD-config.template
pkgver=2022.02.04.05
pkgver=2022.03.10.01
pkgrel=0
options="!check" # check requires root?

4
config/nftables/nft/inet/redxenfirewall/filter/input/stateful/base
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@ -1,2 +1,2 @@
iifname "eth0" limit rate 10 mbytes/second burst 100 mbytes ct state new meter global4 { ip saddr timeout 10m limit rate over 1/second burst 30 packets } update @blackhole4 { ip saddr } counter;
iifname "eth0" limit rate 10 mbytes/second burst 100 mbytes ct state new meter global6 { ip6 saddr timeout 10m limit rate over 1/second burst 30 packets } update @blackhole6 { ip6 saddr } counter;
iifname "eth0" ct state new meter global4 { ip saddr timeout 6h limit rate over 20/minute burst 60 packets } update @blackhole4 { ip saddr } counter;
iifname "eth0" ct state new meter global6 { ip6 saddr timeout 6h limit rate over 20/minute burst 60 packets } update @blackhole6 { ip6 saddr } counter;

4
config/nftables/nft/inet/redxenfirewall/filter/input/stateful/dovecot
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@ -1,2 +1,2 @@
tcp dport { 143, 993 } ct state new meter dovecot4 { ip saddr timeout 10m limit rate over 4/minute burst 10 packets } update @blackhole4 { ip saddr } counter;
tcp dport { 143, 993 } ct state new meter dovecot6 { ip6 saddr timeout 10m limit rate over 4/minute burst 10 packets } update @blackhole6 { ip6 saddr } counter;
tcp dport { 143, 993 } ct state new meter dovecot4 { ip saddr timeout 1h limit rate over 2/minute burst 20 packets } update @blackhole4 { ip saddr } counter;
tcp dport { 143, 993 } ct state new meter dovecot6 { ip6 saddr timeout 1h limit rate over 2/minute burst 20 packets } update @blackhole6 { ip6 saddr } counter;

4
config/nftables/nft/inet/redxenfirewall/filter/input/stateful/postfix
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@ -1,2 +1,2 @@
tcp dport { 25, 465, 587 } ct state new meter postfix4 { ip saddr timeout 10m limit rate over 4/minute burst 20 packets } update @blackhole4 { ip saddr } counter;
tcp dport { 25, 465, 587 } ct state new meter postfix6 { ip6 saddr timeout 10m limit rate over 4/minute burst 20 packets } update @blackhole6 { ip6 saddr } counter;
tcp dport { 25, 465, 587 } ct state new meter postfix4 { ip saddr timeout 1h limit rate over 2/minute burst 20 packets } update @blackhole4 { ip saddr } counter;
tcp dport { 25, 465, 587 } ct state new meter postfix6 { ip6 saddr timeout 1h limit rate over 2/minute burst 20 packets } update @blackhole6 { ip6 saddr } counter;