Messages in this thread | | | From | Systemkennung Linux <> | Subject | Re: [OFF-TOPIC] Re: Evil TCPD? (Was: Re: UseNet Gateway One Way ok?) | Date | Tue, 27 May 1997 22:42:54 +0200 (MET DST) |
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> > > - Block the connection all together (silently drop the syn) > > > (ICMP dest unreachable) > > > > Can't you do that with ipfwadm -I -a (deny|reject)? > > If you have any lower priority MXes run by your ISP, the mail will simply > route around your firewall.
Even worse; in practice almost all UNIX machines will happily relay email.
Ralf
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