Re: timeout for iptables
Jeff Peng wrote:
> Is there a tool for maintaining the timeout for iptables rules?
>
> for example, one IP would be blocked by my iptables for 24 hours, and
> another IP should be blocked for one week.
iptables (which are currently implemented in nftables) don't have a native
timeout; you need to use an external tool to insert and remove them.
The best way of doing that is to have a separate table that you
call (for blocking purposes, called from INPUT; if you're
maintaining a firewall, from FORWARD) and use your tool to only
insert and remove lines from that table.
There's a package called fail2ban which is normally used to
inspect logs and issue ban rules based on the logs; it has a
timeout feature. It would be relatively easy to write a new
config for fail2ban rather than implement all the rest of this
yourself. Set up a couple of fake logs files, one for 24 hour
bans and one for 7 day bans, and write IPs to those files,
letting fail2ban take care of the rest.
-dsr-
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