lose connection to some sites


Forum: Networking
Topic: lose connection to some sites
started by: humpty
Posted by humpty on July 05 2008,10:56
I don't know if others have this problem, but after prolonged
internet access, typically a few days, i'm unable to connect to
some sites usually google. I am behind a wired router.

Other sites are ok, it's really weird. I have checked the
static IP and DNS are fine. I can even ping those problem sites
and it's fine, just can't get them to diplay in firefox or dillo.

I have tried different browsers and rebooted the router but still
have the same problem. I can however connect via another pc
through the same router at the same time so I don't think it's the router.

The only solution each time is to reboot the pc which solves the
problem every time. But I don't want to keep doing that cos I use
it for a server.

Any thoughts?

(dsl 4.4)
Posted by chaostic on July 05 2008,11:26
Quote (humpty @ July 05 2008,06:56)
I don't know if others have this problem, but after prolonged
internet access, typically a few days, i'm unable to connect to
some sites usually google. I am behind a wired router.

Other sites are ok, it's really weird. I have checked the
static IP and DNS are fine. I can even ping those problem sites
and it's fine, just can't get them to diplay in firefox or dillo.

I have tried different browsers and rebooted the router but still
have the same problem. I can however connect via another pc
through the same router at the same time so I don't think it's the router.

The only solution each time is to reboot the pc which solves the
problem every time. But I don't want to keep doing that cos I use
it for a server.

Any thoughts?

(dsl 4.4)

Try bringing down and then up the interface.

Also, try clearing the dns cache. I don't know dsl uses for dns caching, so I can't tell you what should be done for that.

Edit: Do you get the same problem is you use the terminal browser, netrik or (if you want to download) links?

---
But, as a side note, robert, the files
/opt/ppp/ip-down.d/0dns-down
/KNOPPIX/etc/init.d/dns-clean
and it's symlink
/etc/init.d/dns-clean

Are not used and can be removed (The first one uses the nscd dns caching daemon, which dsl does not have, while the second exclusively uses the first script.)(Unless clearing out the resolv.conf at the end of a ppp session is needed, then the first one should stay, but the backup created is never used again...)
Posted by humpty on July 05 2008,18:59
Quote (chaostic @ July 05 2008,19:26)
Try bringing down and then up the interface.

Also, try clearing the dns cache. I don't know dsl uses for dns caching, so I can't tell you what should be done for that.

tks,
anyone know the commands for those?
Posted by danielp on July 09 2008,14:48
To bring the interface down:
sudo ifconfig eth0 down
(replace eth0 with your interface)

To bring it back up:
sudo ifconfig eth0 up

Don't know about dsn cache though.
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