From: toml <toml@thlu.de>
To: netfilter@vger.kernel.org
Subject: Incomprehensible behavior
Date: Thu, 03 Aug 2023 16:37:59 +0200 [thread overview]
Message-ID: <deb6fbeeb06a5c39b9f2ea7ba7a0060c3e723d64.camel@mail> (raw)
Hello @ all
I'm still struggling anymore with the new syntax at ApplicationLayerGateway/FTP and testing with smallest steps. In doing so I have now come across the following effect. I have 2 test-rules here, both of which i expected to completely block any outgoing traffic.
But as you can see from the second example in the counter, only here is blocked. The first example has no effect at all, everything works as if it was not blocked.
# nft list ruleset
table ip filter {
chain output {
type filter hook output priority 0; policy drop;
meta pkttype { 0, 1, 2 } accept
counter packets 0 bytes 0 reject with icmp 13
}
}
# nft list ruleset
table ip filter {
chain output {
type filter hook output priority 0; policy drop;
meta pkttype { 1, 2 } accept
counter packets 1858 bytes 165434 reject with icmp 13
}
}
Is this a desired behavior, when a unicast-accept virtually neutralizes the complete filter? How do I deal with this problem?
Best Regards
Thomas
next reply other threads:[~2023-08-03 14:37 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-03 14:37 toml [this message]
-- strict thread matches above, loose matches on Subject: below --
2023-08-03 14:43 Incomprehensible behavior toml
2023-08-03 15:04 ` Florian Westphal
2023-08-03 15:59 ` toml
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