Help answer threads with 0 replies.
Go Back > Forums > Linux Forums > Linux - Networking
User Name
Linux - Networking This forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.


  Search this Thread
Old 07-25-2004, 07:45 AM   #1
Registered: Feb 2004
Location: by the Bavarian Sea
Distribution: Devuan 3 Beowulf
Posts: 71

Rep: Reputation: 18
Question Uploads stall after some kB (modem). Firewall-Problem?


I've been doing some searches on my problem, but in vain. Hopefully you can help, because I'm out of leads.

Sorry in advance for the load of text, but since I'm not sure where the problem comes from, I wanted to make certain you could spot obvious issues.

I'm running Slackware Linux 10 (2.4.26) with a set of iptables rules in /etc/rc.d generated by Guarddog. I'm not a netfilter pro, and feel reluctant to become one.
My internet connection is dialup via a 56k-Modem.
I can surf the web, download files, chat on ICQ and IRC, and send 'regular' eMails without problems.

I tried to send an archive of about 300 kB by eMail. It started out alright, but continuously got slower and slower, until it stalled after about 30 kB and cancelled the transfer. I tried again - same result.

I then tried to upload the data to some FTP space. Again, the transfer began and then slowly came to stagnation.
Using a different dialup-ISP or different FTP space was no good.

Then I rebooted without the firewalling rc-script and tried again: Both sending the eMail and uploading to FTP worked.

In what way could my ruleset inhibit the sending of data that exceeds a certain size?
Is it possible at all that the problem is size-dependent?
If so, what do I do against it?

Thanks in advance!
- FurrySpider -
Old 07-27-2004, 03:58 PM   #2
Registered: Feb 2004
Location: by the Bavarian Sea
Distribution: Devuan 3 Beowulf
Posts: 71

Original Poster
Rep: Reputation: 18
A BUMP with some additional information:

I did an upgrade from Slackware 9.1 to 10, not a new installation. Could I have messed something up there, thad could lead to such a result?

I just tried some different kernels: 2.6.7 from Slack10 and 2.4.22 from Slack9.1
No change.

Then I removed iptables 1.2.10 and instead installed 1.2.8 - no change.

Earlier I disabled the iptables-ruleset created by GuardDog and tried rulesets made by other firewalling utilities (firestarter, kmyfirewall). No change.

Has anybody experienced a similar problem?
What could be the cause of the stagnant upload?

I'd really appreciate some help. Thanks.
Old 07-30-2004, 12:25 PM   #3
Registered: Feb 2004
Location: by the Bavarian Sea
Distribution: Devuan 3 Beowulf
Posts: 71

Original Poster
Rep: Reputation: 18
Okay, I put _quite_ some effort into fiddling around with my installation.
Thus, I'm going to post the results here, even though there doesn't seem to be much interest. Anyhoo...

It's the kdenetwork 3.2.3 package. I downgraded it to 3.1.4 (from Slack 9.1) again, and it works perfectly.

Of course, it's probably not the whole package, but rather one of the applications in it. But I just don't have the time (or obsession) to find out which. If any of you should stumble upon the answer, please post.


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
downloads stall and fail borrrden Linux - Networking 4 04-22-2005 10:17 AM
PHP file uploads problem ... MikeFoo1 Programming 3 11-26-2004 02:53 PM
Download stall question. rvijay Linux - Newbie 8 10-09-2003 08:21 AM
Downloads Stall BruceCadieux Linux - Networking 2 07-17-2002 11:49 PM
Mandrake 8.2 install stall! joannew Linux - Software 1 05-27-2002 01:29 PM > Forums > Linux Forums > Linux - Networking

All times are GMT -5. The time now is 11:56 AM.

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