[VoiceOps] TCPDump on an Adtran TA908E

[Zak Rupas]

I really appreciate it Brad!



*Thanks-*

Zak Rupas

Tier 3 Engineer

Support: 303-242-8606 option 1

 Like SimpleSignal on *Facebook <http://www.facebook.com/SimpleSignal> !*

SimpleSignal Inc.

3600 S. Yosemite Street

Suite 150

Denver, CO  80237

[image: Description: Description: cid:image001.png at 01CBDE2D.5E1CC730]



*From:* Brad Anouar [mailto:Brad at broadcore.com]
*Sent:* Thursday, September 22, 2011 4:54 PM
*To:* 'Zak Rupas'; voiceops at voiceops.org
*Subject:* RE: [VoiceOps] TCPDump on an Adtran TA908E



Hi Zak,



The following is the whole procedure on how to obtain and convert a packet
capture to a pcap file.





>From the command line, we have the ability to look at every packet coming in
and out of the router, along with the ability to limit that debug with an
access-list. This is best done from a telnet or SSH session, as the console
can drop some of the output due to a limited buffer size.



It is preferable to not have any other messages pop up that may interfere
with the capture text. The events and any other debugs should be turned off
before performing this debug. This can be done with the following commands:



Router# no events

Router# undebug all



The general command is:



<> = optional



Router# debug ip packet <access-list name> <detail / dump>



NOTE: It is not recommended to run this command without referencing an
access-list.



---------------------------------------------------



To limit the traffic to and from a particular peer:



ip access-list extended test

  permit ip any host <IP in question>

  permit ip host <IP in question> any



For example:



ip access-list extended test

  permit udp host 192.168.40.22  any eq 5060





debug ip packet test detail

debug ip packet test dump



---------------------------------------------------



If you desire to see more than what 'detail' provides, choosing 'dump' will
output the entire packet in text form. This can be copied to a text document
and converted to an actual packet capture.



The program Wireshark (www.wireshark.org) comes with a utility known as
Text2Pcap. Copy (text2pcap.exe) from the Wireshark folder to a root drive,
as well as the text file. Run the following command from a DOS prompt:



text2pcap.exe -e 0x800 <Text Filename> <Capture Filename to Create
(extension .pcap)>



The capture file can then be opened in Wireshark. If the unit is running a
firewall, you will probably see every packet twice (once entering the
firewall & once leaving, depending on the ACL you are using); the second may
be after a NAT process if NAT is enabled.



If the traffic is across a VPN, the second packet will not be seen since it
enters/leaves the router encapsulated in VPN.



*Brad Anouar** ** *| Anywhere (310) 360-2028 | Corporate (800) 942-4700 |
www.broadcore.com



*From:* voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org]
*On Behalf Of *Zak Rupas
*Sent:* Thursday, September 22, 2011 3:24 PM
*To:* voiceops at voiceops.org
*Subject:* [VoiceOps] TCPDump on an Adtran TA908E



Does anyone know the TCP Dump commands for the Adtran TA908e CLI?



*Thanks-*

Zak Rupas

Tier 3 Engineer

Support: 303-242-8606 option 1

 Like SimpleSignal on *Facebook <http://www.facebook.com/SimpleSignal> !*

SimpleSignal Inc.

3600 S. Yosemite Street

Suite 150

Denver, CO  80237

[image: Description: Description: cid:image001.png at 01CBDE2D.5E1CC730]
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://puck.nether.net/pipermail/voiceops/attachments/20110922/2b61464e/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.png
Type: image/png
Size: 32330 bytes
Desc: not available
URL: <https://puck.nether.net/pipermail/voiceops/attachments/20110922/2b61464e/attachment-0001.png>