Mailinglist Archive: opensuse-security (670 mails)

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RE: [suse-security] Limit Squid Port Range
> From: d_lord@xxxxxx [mailto:d_lord@xxxxxx]
> Hi list,
>
> maybe my question is a bit stupid but I can't find
> a useful answer myself (usual way FAQ, google....).
> So let's have a look if YOU know more about this *gg*.
>
> I have set up a ipchains script. Default deny all.
> I don't want squid to go through the whole port range
> 1024-65355 but limit the use on ports from 1024:3120 I've
> tried different ACL's and non of them worked for me. Now I
> think there should be another option but I just can't find it :-(
>
> My squid is Version 2.4
> ipchains Version 1.3.10
>
> Output Rule:
> ipchains -A output -i $EXT -p tcp -s $EXTIP 1024:3120 --dport
> 80 -j ACCEPT
>

How do you like this idea?

ipchains -A input -i $EXT -p tcp ! --syn --dport 1024:4999 -j ACCEPT

Now it's not possible to open a new connection to a port between 1024
and 4999. Why should you want to limit your outgoing port range?

Regards, Andreas


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