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mailinglists35/tcpdump wtf network - tcpdump filter to identify network issues problems

Created May 12, 2022 01:14
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tcpdump wtf network - tcpdump filter to identify network issues problems
sudo tcpdump -ni any "(icmp and (icmp[0] != 8) and (icmp[0] != 0) or (tcp and not ((tcp[tcpflags] & (tcp-push|tcp-ack|tcp-syn|tcp-fin) != 0) or (tcp[13]=18) or ((tcp[tcpflags] == tcp-fin) and (tcp[tcpflags] == tcp-ack)) ))) and not host (17.17.17.17 or 192.168.1.2) and not tcp port (852 or 442) and not ip6"
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