12-08-2006 11:52 PM - edited 03-11-2019 02:06 AM
I have upgraded to PIX 525 7.2(2). When I did I used the same rules as on the 515. I know the fixup changed to inspect and have all working with the strange exception of VOIP and some special applications. one is with port 2000. I need to allow port 2000 to a specific PC, and have done so with an ACL entry.
object-group network Zap2it_host
description Zap2it allowed hosts
network-object 192.168.6.0 255.255.255.0
access-list OUT_to_IN extended permit tcp object-group Zap2it_host host 10.10.10.22 eq 2000
access-group OUT_to_IN in interface outside
All IPs are public and no NAT configured (only 2 interfaces inside and outside). However packets are dropped but do not reflect where they are dropped. A capture of both interfaces only shows traffic on the outside.
packets captured
1: 15:43:39.129754 192.168.6.5.3280 > 10.10.10.22.2000: S 3184932859:3184932859(0) win 25200 <mss 1460,nop,nop,sackOK>
Assistance will be greatly appreciated.
Regards,
Brad
12-11-2006 12:47 AM
Hi Brad,
maybe you can track the dropped traffic and check for the drop code, try using the "show asp-drop" command and monitor the increasing number when passing the port 2000 traffic to get the error code, that could give a hint on what is causing the traffic drop.
don't forget to clear the counter before beginning "clear asp-drop"
you can also capture the dropped traffic using the capture
http://www.cisco.com/univercd/cc/td/doc/product/multisec/asa_sw/v_7_2/cmd_ref/c1_711.htm#wp2025431
hope that this helps.
Shadi'
12-11-2006 01:19 PM
Shadi,
Thanks for your reply, but we have the situation fixed now. The application I was using to upload files from outside the f/w to a machine on the inside used port 2000. We had port 2000 in the global inspection rules under skinny.
There was another issue with sip as well.
Removing the lines:
inspect skiny
inspect sip
from the global ploicy allowed the traffic to flow properly. Some how because the originating traffic was from the outside the inspection engine dropped it because of the handling of those ports.
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