On Tue, 14 Mar 2000, Donncha O Caoimh wrote:
> If you look back a few messages you'll see I posted an extract from
> /var/log/messages where the foreign host in question sent weird packets
> to my machine.
> Mar 12 03:28:47 mail portsentry[7764]: attackalert: Unknown Type: Packet
> Flags: SYN: 1 FIN: 1 ACK: 0 PSH: 0 URG: 0 RST: 0 from
> host:samantha.craghead.com/216.15.159.194 to TCP port: 109
>> Any idea what would have caused that?
uhmm... SYN and FIN both set in the same packet? I'm pretty sure that is
not a valid combination for tcp, so malformed packet -> most likely hack
attack..
(unless someone can think of a tcp state where both SYN and FIN may be
set)
> Especially at that time in the
> morning.. nobody here.
>> Donncha.
-paul
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