Limited Network Connectivity / Port Blocking?

I have a desktop running Windows 2003 Server at home. The machine is used
mainly as a development machine and has been in place for almost 2 years. It
is a DHCP client with a very basic setup. It is not a member of any AD
domain (there isn't one on the network) and there are only 3 other computers
on the network.

A few days ago, my network setup seems to have changed. It now appears that
some ports are available while others are not.

I can use the RDP client to connect to other machines. I can resolve and
ping other hosts / addresses.

I cannot open web pages on other machines or use PPTP to establish a VPN
connection to a host.

I don't think this is an issue related to my network firewall device or any
type of network wide TCP/IP setup issue. Other machines are fine. I have
even switched network connections. Definitely something limited to the local
machine. I am not aware of any changes that occurred on the machine in any
areas. Has anyone seen anything like this? Any suggestions?

thanks,

-Andrew

possible not thing wrong with your computer. check this page for more details,

Connection errors
"This connection has limited or no connectivity. " "You might not be able to
access the Internet or some network resources" · “No More Connections Can Be ...
www.chicagotech.net/connectionerrors.htm

Bob Lin, MS-MVP, MCSE & CNE
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
"Andrew Robinson" <(E-Mail Removed)> wrote in message news:uC9$(E-Mail Removed)...
I have a desktop running Windows 2003 Server at home. The machine is used
mainly as a development machine and has been in place for almost 2 years. It
is a DHCP client with a very basic setup. It is not a member of any AD
domain (there isn't one on the network) and there are only 3 other computers
on the network.

A few days ago, my network setup seems to have changed. It now appears that
some ports are available while others are not.

I can use the RDP client to connect to other machines. I can resolve and
ping other hosts / addresses.

I cannot open web pages on other machines or use PPTP to establish a VPN
connection to a host.

I don't think this is an issue related to my network firewall device or any
type of network wide TCP/IP setup issue. Other machines are fine. I have
even switched network connections. Definitely something limited to the local
machine. I am not aware of any changes that occurred on the machine in any
areas. Has anyone seen anything like this? Any suggestions?

thanks,

-Andrew