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-rw-r--r-- | content/docs/openbsd/_index.md | 6 | ||||
-rw-r--r-- | content/docs/openbsd/pf.md | 39 |
2 files changed, 45 insertions, 0 deletions
diff --git a/content/docs/openbsd/_index.md b/content/docs/openbsd/_index.md new file mode 100644 index 0000000..c79bf9b --- /dev/null +++ b/content/docs/openbsd/_index.md @@ -0,0 +1,6 @@ +--- +title: "OpenBSD" +description: OpenBSD related articles +--- + +I am a long time openbsd user, my first installation dating back to 2008. diff --git a/content/docs/openbsd/pf.md b/content/docs/openbsd/pf.md new file mode 100644 index 0000000..0eaafc4 --- /dev/null +++ b/content/docs/openbsd/pf.md @@ -0,0 +1,39 @@ +--- +title: pf.conf +description: The template I use on new installations +--- + +## pf.conf + +The open ports list is refined depending on the usage obviously, and not all servers listen for wireguard... It is just a template : + +{{< highlight conf >}} +vpns="{ wg0 }" + +table <myself> const { self } +table <private> const { 10/8, 172.16/12, 192.168/16, fd00::/8 fe80::/10 } +table <internet> const { 0.0.0.0/0, !10/8, !172.16/12, !192.168/16, ::/0, fe80::/10, !fd00::/8 } + +##### Basic rules ##### +set skip on lo +set syncookies adaptive (start 25%, end 12%) +set block-policy return +block drop in log quick from urpf-failed label uRPF +block return log + +##### This firewall ##### +block drop in on egress +pass in on egress proto { icmp, icmp6 } from <internet> to <myself> +pass in on egress proto tcp from <internet> to <myself> port { http, https, imaps, smtp, smtps, ssh, submission } +pass out from <myself> to any + +##### VPNs ##### +pass in on egress proto udp from <internet> to <myself> port 342 +pass in on $vpns from <private> to <myself> + +##### Openbsd stock rules ##### +# By default, do not permit remote connections to X11 +block return in on ! lo0 proto tcp to port 6000:6010 +# Port build user does not need network +block return out log proto {tcp udp} user _pbuild +{{< /highlight >}} |