42 lines
1.6 KiB
Diff
42 lines
1.6 KiB
Diff
From a67f0be23c3d90dc1148c4ad6b9b9215676acbe5 Mon Sep 17 00:00:00 2001
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From: Phil Sutter <psutter@redhat.com>
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Date: Thu, 20 Nov 2025 20:10:59 +0100
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Subject: [PATCH] doc: fix tcpdump example
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JIRA: https://issues.redhat.com/browse/RHEL-121194
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Upstream Status: nftables commit b9516b0a4dfb6e16e3e11c3024683a2df1ea09ab
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commit b9516b0a4dfb6e16e3e11c3024683a2df1ea09ab
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Author: Georg Pfuetzenreuter <mail@georg-pfuetzenreuter.net>
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Date: Mon Oct 13 19:17:31 2025 +0200
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doc: fix tcpdump example
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The expression needs to be enclosed in a single string and combined with
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a logical AND to have the desired effect.
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Fixes: 1188a69604c3 ("src: introduce SYNPROXY matching")
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Signed-off-by: Georg Pfuetzenreuter <mail@georg-pfuetzenreuter.net>
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Reviewed-by: Fernando Fernandez Mancera <fmancera@suse.de>
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Signed-off-by: Florian Westphal <fw@strlen.de>
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Signed-off-by: Phil Sutter <psutter@redhat.com>
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---
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doc/statements.txt | 3 +--
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1 file changed, 1 insertion(+), 2 deletions(-)
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diff --git a/doc/statements.txt b/doc/statements.txt
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index 6226713..834f95f 100644
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--- a/doc/statements.txt
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+++ b/doc/statements.txt
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@@ -691,8 +691,7 @@ needed for selective acknowledgement and window scaling).
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---------------------------------------
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Determine tcp options used by backend, from an external system
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- tcpdump -pni eth0 -c 1 'tcp[tcpflags] == (tcp-syn|tcp-ack)'
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- port 80 &
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+ tcpdump -pni eth0 -c 1 'tcp[tcpflags] == (tcp-syn|tcp-ack) && port 80' &
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telnet 192.0.2.42 80
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18:57:24.693307 IP 192.0.2.42.80 > 192.0.2.43.48757:
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Flags [S.], seq 360414582, ack 788841994, win 14480,
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