In a Windows XP computer suddenly browsers stop showing websites. While running procmon I noticed that I can easily go to websites running on port 443, port 10000 and port 9675 ( spiceworks ).
Also ping, nslookup, tracert work fine.
Trying telnet IP 80 doesn't work. But I can telnet to other TCP services like FTP/SMTP
This problem goes away once the computer is restarted. But it keeps cropping up randomly. How can I troubleshoot this?