On Tue, 14 Mar 2000 17:23:24 +0000 jm at jmason.org (Justin Mason) wrote:
| Donncha O Caoimh said:
| >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
|| > hmm.. from /etc/services, port 109 is
| > pop-2 109/tcp postoffice # POP version 2
| pop-2 is either a scan for an obsolete POP server, or a scan to see if
| you've got a recent trojan on any of your boxes; can't remember which one/
| more details though sorry ;) I think Dermot Hanley might be on the right
| track.
| If pop2 is coming up, that's a pretty good sign someone's running
| something there that shouldn't be running, so I'd talk to the admin.
*nod*nod* Another worthwhile indicator if you are running a subnet in the
'real world' is if you see a sequence of connect attempts to invalid
addresses. A relatively straightforward way to spot this is to configure
your access router to syslog to a machine in your DMZ and to log all
packets that do/don't conform to certain rules.
Is there a program out there which will masquerade as the usual suspects
while collecting data about the intruder?
Paul
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