Hi,

Our mail server got blocked from connecting to port TCP/1206 on a remote
mail server.  At that time, the remote mail server was delivering mail to
us.  It was using the source port TCP/1206.  Why would our mail server try
to connect back to that port?

Nat Log:

Feb  8 02:19:55 FW2 NAT: Open tunnel TCP
[192.168.79.224/25]<-[207.247.80.133/25]<-[210.42.160.59/1206].
Feb  8 02:20:15 FW2 NAT: Close tunnel TCP
[192.168.79.224/25]<-[207.247.80.133/25]<-[210.42.160.59/1206] Pkts 7 3,
Bytes 308 132.
Feb  8 02:20:16 FW2 NAT: Open tunnel TCP
[192.168.79.224/25]<-[207.247.80.133/25]<-[210.42.160.59/1206].
Feb  8 02:20:27 FW2 NAT: Close tunnel TCP
[192.168.79.224/25]<-[207.247.80.133/25]<-[210.42.160.59/1206] Pkts 2
1, Bytes 88 44.


Filter Log:

Feb  8 02:19:55 FW2 FILTER: Remote access filter accepts : TCP vx0
[210.42.160.59/1206]->[207.247.80.133/25] l=0 f=0x2.
Feb  8 02:20:16 FW2 FILTER: Remote access filter accepts : TCP vx0
[210.42.160.59/1206]->[207.247.80.133/25] l=0 f=0x2.
Feb  8 02:20:27 FW2 FILTER: Outbound filter blocks: TCP xl0
[192.168.79.224/25]->[210.42.160.59/1206] l=0 f=0x12.
Feb  8 02:20:35 FW2 FILTER: Outbound filter blocks: TCP xl0
[192.168.79.224/25]->[210.42.160.59/1206] l=0 f=0x12.
Feb  8 02:20:51 FW2 FILTER: Outbound filter blocks: TCP xl0
[192.168.79.224/25]->[210.42.160.59/1206] l=0 f=0x12.



Thanks!

-- 
Alex Baram
System Administrator
(303) 298-7478 x1209
http://www.xig.com


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