From: Randy Bush <randy@psg.com>
To: Sunny73Cr <Sunny73Cr@protonmail.com>
Cc: Kerin Millar <kfm@plushkava.net>, netfilter@vger.kernel.org
Subject: Re: prefix len confusion
Date: Wed, 10 Jun 2026 17:25:08 -0700 [thread overview]
Message-ID: <m21ped2aaj.wl-randy@psg.com> (raw)
In-Reply-To: <scvzZFFc0YAE7k_JC5BL5RPJaJmJhsP5UHJ8TSZzLVAQohQAdyhlLFw3AV9_oNq6GpFaWI8x4LKNiS4NPqOUZe0gLUhx1G0oRLStKsyGyEw=@protonmail.com>
> chain wan-in {
> ip saddr $BOGONS4 drop
> ip saddr $EXTv4 daddr $VULN4 accept
> ip saddr $JUMP4 daddr $VULN4 accept
> ip daddr $VULN4 drop
> ip protocol icmp accept
> ...
>
> Did you mean to do this instead?
not really. if the source is in the trust boundary, it can access
anything. e.g. there was also a
tcp dport 8006 ip daddr $PROX4 drop
in there which is yet more dests allowed to trusted sources
randy
next prev parent reply other threads:[~2026-06-11 0:25 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-10 0:10 prefix len confusion Randy Bush
2026-06-10 0:51 ` Kerin Millar
2026-06-10 1:01 ` Randy Bush
2026-06-10 1:26 ` Kerin Millar
2026-06-10 1:32 ` Randy Bush
2026-06-10 1:38 ` Kerin Millar
2026-06-10 16:33 ` Randy Bush
2026-06-10 16:53 ` Kerin Millar
2026-06-10 17:19 ` Randy Bush
2026-06-10 18:02 ` Kerin Millar
2026-06-10 23:51 ` Sunny73Cr
2026-06-10 23:57 ` Randy Bush
2026-06-11 0:06 ` Sunny73Cr
2026-06-11 0:25 ` Randy Bush [this message]
2026-06-11 1:05 ` Kerin Millar
2026-06-11 1:12 ` Randy Bush
2026-06-10 6:20 ` Reindl Harald
2026-06-10 10:09 ` Kerin Millar
2026-06-10 16:01 ` Randy Bush
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