LinuxQuestions.org
LinuxAnswers - the LQ Linux tutorial section.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Networking
User Name
Password
Linux - Networking This forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.

Notices

Reply
 
Search this Thread
Old 09-19-2005, 02:17 PM   #1
mephitic
Member
 
Registered: Aug 2003
Distribution: SuSE 9.0
Posts: 45

Rep: Reputation: 15
Question SuSE 9.3 Firewall Dropping Connections


I'm running SuSE 9.3 as a router between the following:

eth0 - External Network (Untrusted) - Internet Connection
eth1 - Internal Network 10.62.56.x (Untrusted) - Corporate Connection
eth2 - Internal Network 192.168.66.x (Trusted) - Local LAN

I've allowed access from eth2 to eth1 but NOT eth1 to eth2. If I transfer a large file or a large amount of files from eth2 to eth1 I'll get a message that the share is no longer available.

I'm not seeing any errors in /var/log/firewall

Any idea what would be the problem for the connection loss?

Thanks,
MePH
 
Old 09-19-2005, 09:33 PM   #2
Matir
Moderator
 
Registered: Nov 2004
Location: San Jose, CA
Distribution: Ubuntu
Posts: 8,507

Rep: Reputation: 117Reputation: 117
In what way are you allowing this access? Are you allowing established/related packets in both directions? What protocol do you use to transfer the files?
 
Old 09-19-2005, 09:57 PM   #3
mephitic
Member
 
Registered: Aug 2003
Distribution: SuSE 9.0
Posts: 45

Original Poster
Rep: Reputation: 15
I've allowed all traffic to pass from eth2 to eth1. I'm just using Windows explorer to do a file copy to a network share on a Windows 2003 server.

MePH
 
Old 09-19-2005, 10:03 PM   #4
Matir
Moderator
 
Registered: Nov 2004
Location: San Jose, CA
Distribution: Ubuntu
Posts: 8,507

Rep: Reputation: 117Reputation: 117
What are the packet filters configured to do on the firewall? Is there anything significant about when it drops the connection?
 
Old 10-02-2005, 03:52 PM   #5
mephitic
Member
 
Registered: Aug 2003
Distribution: SuSE 9.0
Posts: 45

Original Poster
Rep: Reputation: 15
Quote:
Originally posted by Matir
What are the packet filters configured to do on the firewall? Is there anything significant about when it drops the connection?
Sorry I dropped the thread for a while .. Got busy ... Anyway I was watching log files today with this and there isn't any errors in /var/log/firewall or a tcpdump. They both just stop collecting data on the transfer.

my ip = 192.168.66.228
server ip = 10.62.56.3

Code:
tail -f /var/log/firewall | grep SRC=192.168.66.228 | grep DST=10.62.56.3
Code:
tcpdump -n -i eth2 | grep 10.62.56.3
Both these just stop dead if I start a file transfer which ends in the share is no longer available.

MePH
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
FTP Dropping connections Seventh Linux - Software 1 06-05-2005 02:11 PM
Linux Servers dropping connections Charles Daniel Linux - Security 7 10-25-2004 08:10 AM
RedHat Advance Server dropping Connections cyberknet Linux - Networking 1 02-24-2004 11:45 AM
shorewall dropping/rejecting wanted connections (squid/webmin) win32sux Linux - Networking 2 08-01-2003 02:57 PM
dhcp dropping connections jmmirabal Linux - Newbie 1 03-24-2003 04:51 PM


All times are GMT -5. The time now is 08:43 AM.

Main Menu
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration