-2

I ran

sudo iptables -A INPUT -p udp -j LOG --log-prefix "udp:"

How do I make it stop?

1

The corresponding flag to delete a rule is -D; you can either use the same specification that you previously added or you can use the rule number.

To undo:

sudo iptables -A INPUT -p udp -j LOG --log-prefix "udp:"

... use:

sudo iptables -D INPUT -p udp -j LOG --log-prefix "udp:"

... or find the rule number with:

iptables -L INPUT --line-numbers  # perhaps with a "|grep LOG" to narrow it down

receiving output such as:

Chain INPUT (policy ACCEPT)
num  target     prot opt source               destination
1    ACCEPT     all  --  anywhere             anywhere             ctstate RELATED,ESTABLISHED
...
8    LOG        udp  --  anywhere             anywhere             LOG level warning prefix "udp:"
...

... you could then remove it with:

iptables -D INPUT 8 

... where 8 is the "num" from the previous output that matches the rule you want to remove.

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