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There is one machine on my network that can not access one of our websites!
Chrome just idles for a while then says "Oops can't connect", similar behavior is observed in other browsers too. Nslookup finds the domain's IP and ping (by IP) works with a high TTL. Ping by domain just times out.
The site is on a shared host with several of our other websites hosted there. The affected machine can visit our other websites occasionally - sometimes they load very slowly if at all. One particular website wont load at all.
All other machines on the network can access and interact with the site, as too can machines outside of the building. The problem is entirely constrained to one machine.
All machines in the office are running Win XP Pro.
These are the things I've tried, either in conjunction with one another, or individually:
- Assigning a fixed IP
- Renewing the IP lease
- Flushing the local DNS cache (ipconfig /flushdns)
- Connecting directly to the main router (bypassing the switch)
- Connecting to a different router
- Cold reboot
- Ping by IP (works slowly)
- Ping by domain (time out)
- Tracert - very slow, gets there in the end
- nslookup finds the domain's IP
- Changing the network cables
- Emptying Chrome's cache
- Trying a different browser (Maxthon)
- Running CCleaner
- Running a spyware & AV check
- Disabling the machine's firewall and AV
- Checking windows firewall is still disabled
- Adding an entry to the hosts file
- Using Google's DNS servers
- Rebooting all the network hardware
- Changing the MAC address on the router
- Accessing site directly by IP to avoid DNS lookups
- Checked cPanel isn't blocking our IP
I'm stumped!
This just makes no sense to me and I've exhausted all the things i can think of to correct this issue, apart from a clean re-install which isn't necessarily the most viable option.
Anything else i can try?
What web server and version are you sing? What port are you using? Are you using host headers? Are you using ACLs? – CIA – 2014-02-24T01:32:42.187
It's a shared host, and they are using LiteSpeed V6.6. Standard port 80 is used (no SSL). There are no ACL's that i'm aware of or have access to. I've checked cPanel and there is no available configuration for the firewall, besides the site is accessible from other machines on the same network – Rucia – 2014-02-24T01:40:39.550
New network card? – Canadian Luke – 2014-02-24T02:09:18.373
Its still the existing NIC - was working fine between 9am and 10am then at 10:05 it wasn't working - very odd. – Rucia – 2014-02-24T02:15:38.070
Try a new one. I'll bet that's it – Canadian Luke – 2014-02-24T02:44:03.143
@CanadianLuke thanks for your suggestion - i'll see if i have one lying around the office. Though before i go out and buy one, what's your theory behind the NIC? – Rucia – 2014-02-24T03:28:51.290
The same thing happens to routers when they're about to die – Canadian Luke – 2014-02-24T04:05:50.647