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add support for negation of sport and dport #91

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and0x000 opened this issue Aug 11, 2022 · 0 comments
Open

add support for negation of sport and dport #91

and0x000 opened this issue Aug 11, 2022 · 0 comments

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@and0x000
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both iptables parameter, sport and dport allow negation.

Example from a recent Debian (Bullseye)

iptables-legacy -I INPUT --protocol tcp --sport 53 --destination 127.0.0.1 ! --dport 53 --jump ACCEPT

However, if configured via ferm, both parameters throw a Doesn't support negation: sport
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@and0x000