Strange network issue - users cannot connect to websites, or they take long to load.
Posted on 2009-05-20
Hello there. We are having some strange issues regarding connecting to websites from within our network. And users connecting to our network using Logmein are also having problems, slow loading pages, or disconnects.
ADSL - 8mb/512
Windows 2000 Server + MS Exchange.
Firewall handles the NAT.
Basically it either takes about x4 times as long to connect to a webpage - eg. the loading bar at the bottom of the page goes very slow. Or the page times out, or we get disconnected (in the case when we try to use logmein)
Now the reason why I think this is strange, is that it only happens to certain pages - hotmail loads fine, quick. Google loads fine, browsing seems fine. I have run speed tests, they are fine. I have called our ISP, they have done circut check, tested the lines, they seem fine. I have run malware scans on all PCs - checked that we have no one downloading or uploading big files.
I'm going to add wireshark to our server today. The only thing I can think of is to reinstall all NIC;s on affected PCs.
Oh, and another thing - which may or may not be direct at this particular problem. My boss suddenly cannot connect via Terminal Services from his home PC, nor logmein. Again, this could be a problem locally to him, but he says everthing else is working fine. Still, this might be another question.
Another option for me to try is to do a 24 hour line check and other diagnostics. Are there any other applications that can help me see if its our network connection causing these slow-downs/disconnects, or its the actual sites themselves. BTW: I have ping'ed, tracert to all listed sites, all came back fine.
Anyhoo - got any ideas of this one. I'm getting calls every minute about people not being able to connect.