Solved

TCP packets passes from Access List but drops due to TCP reset

Posted on 2008-10-14
2
1,350 Views
Last Modified: 2012-05-05
HI Team,

I have a challenging Issue here, We have a source trying to connect to the Server in the inside network.
Source: 10.11.5.173 ( WYSE TERMINAL), Destination : 10.10.10.170

As source has problem in connecting to the server, i ran the Firewall debugs and collected the following debugs, the same source conencts to another server on the same network fine, and that pretty much rules out the issue with the Firewall Blocking the connection over all, But i want to get tehse following debug meesageges deciphered so that i can get an indication whether it is caused by the Server inside the network and not the Firewall.

Syslog ID:                                                               Message
302013       Built inbound TCP connection for Outside:10.11.5.73/2332 (10.11.5.173/2332) to inside:10.10.10.70 /1494 ( 10.10.10.70/1494)

30214        Teardown TCP connection for Outside:10.11.5.73/2332 (10.11.5.173/2332) to inside:10.10.10.70 /1494 ( 10.10.10.70/1494) 0:00:00 bytes 3058 TCP Reset-I

106015     Deny TCP (no connection) from 10.11.5.173/2332 to 10.10.10.70/1494 flags FIN ACK on interface outside

an Urgent help will be greatly appriciated

Thanks Team,    
0
Comment
Question by:tariqmansoor
2 Comments
 
LVL 8

Accepted Solution

by:
Jay_Gridley earned 500 total points
ID: 22718996
Since I was unfamiliar with this log entry I did some digging and found this link that explains the logs entries quite extensively (credit where credit is due):
http://www.firewall.cx/ftopicp-11301.html

I would say that the problem is, as you expected, not on the firewall, but on the server. It seems to not respond to or deny the request. In the logs you see the(embryonic) connection being terminated.

Hope this helps.

JG

0
 

Author Comment

by:tariqmansoor
ID: 22806961
Thanks Team,

Attached Link was quite Helpful for getting more insight to Firewall Handiling of Packtet and generating related Logs

Regards
0

Featured Post

Backup Your Microsoft Windows Server®

Backup all your Microsoft Windows Server – on-premises, in remote locations, in private and hybrid clouds. Your entire Windows Server will be backed up in one easy step with patented, block-level disk imaging. We achieve RTOs (recovery time objectives) as low as 15 seconds.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

BIND is the most widely used Name Server. A Name Server is the one that translates a site name to it's IP address. There is a new bug in BIND (https://kb.isc.org/article/AA-01272), affecting all versions of BIND 9 from BIND 9.1.0 (inclusive) thro…
How to set-up an On Demand, IPSec, Site to SIte, VPN from a Draytek Vigor Router to a Cyberoam UTM Appliance. A concise guide to the settings required on both devices
This is a video describing the growing solar energy use in Utah. This is a topic that greatly interests me and so I decided to produce a video about it.
Concerto provides fully managed cloud services and the expertise to provide an easy and reliable route to the cloud. Our best-in-class solutions help you address the toughest IT challenges, find new efficiencies and deliver the best application expe…

929 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

10 Experts available now in Live!

Get 1:1 Help Now