Hit of an odd problem...

mayhem# · 03-09-2002 8:51am #1

Lads,

I've ran into a bit of a problem with a new network I've setup.
None of the workstation seem to be able to access any website outside the network (i.e. seem to have no Internet access).
However I can ping any IP or http address outside the network and I can use mail no problem. I've changed the connection setting in IE around a bit but it doesn't make any difference. Does anyone have a clue what could cause this?

Rew · 03-09-2002 9:03am

Few more details would help.
OS's involved, what the internet conection is and how it is shared etc...

mayhem# · 03-09-2002 9:07am

OK, hte workstaion are running a mixed batch of Win 98 & XP also IE 5 & 6.
The server runs a stripped down Samba kernel. Internet connection is ADSL and shared through a proxy...

Kali · 03-09-2002 9:14am

sounds like a dns problem...
check that named (or if its windows, dns service) is running on the proxy machine.

Rew · 03-09-2002 9:18am

Which proxy is it (squid?)

When you try access a webpage what error do u get (unreachable, name lookup failed etc..)

Im assuming the server is Linux running Samba for sharing its harddisk...?

mayhem# · 03-09-2002 9:23am

The server is one of these (http://www.net-itech.com/europe/index.htm) yokes. And while it's a breeze to setup, it's not very transparent i.e. you do not have as much access to the nuts 'n bolts of the system.
I have a suspicion that DNS is the direction I have to look at allright.
Will post back later how I get on....

BogoBot · 03-09-2002 11:59am

If you can ping an internet name then I would not be so sure that DNS is your problem.

Is there any firewalling set up? Prehaps port 80 traffic is being dropped/blocked?

BogoBot.

Kali · 03-09-2002 3:06pm

Originally posted by BogoBot
If you can ping an internet name then I would not be so sure that DNS is your problem.

you're right, i didn't see the mention of "http address" in the first post... if in that case you can ping and use nslookup traceroute etc (i.e. traffic that won't go through a web proxy) with both hostnames and ips.. then look again at squid... its the problem

Cond0r · 03-09-2002 3:08pm

If you can ping domain names(ie www.something.com) it's not a DNS problem.
Sounds more like port 80 is being blocked by the firewall/proxy.

Gaz · 03-09-2002 3:10pm

Make sure your not blocking http ...port 80 isnt it ? Pings use a differnet port , icmp ..whatever port that is

Magic Monkey · 03-09-2002 3:37pm

I have had this problem too (sort of). If you have ZoneAlarm running on a Windows machine, load it up when you try a web address, and see if it's blocking the browser, or just shut it down altogether.

I had this problem in Windows 2000. There was no system tray icon for Zonealarm when I logged in; it was running in the background. Once I loaded it up, I found out it was blocking some program's access (IE, Netscape, etc...), and when I granted them access, all was well. Took me a few days to figure it out though

Hit of an odd problem...

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