Hello,

I have two WinXP Pro PC's on a small network that used to share an ISDN Internet connection.

Both PC's had a formatted hard drive and fresh installation of XP Pro - the network was re-established, printers shared, etc. They can 'see' each other and ping each other. The newer PC has the ISDN connected, working, and shared. Before I could establish ICS on the second older PC, a teenager installed SP2 on the main PC.

Both PC's still see each other and share folders, printers, etc. The ICS window sits on both desktops showing that all is OK, but Internet Explorer 6 SP1 on the second PC refuses to access the ISDN connection - the ISDN box can not even be 'pinged' from the second PC. Both PC's have ZoneAlarm active, with the Windows firewall de-activated. I know it sounds like a port has been closed on the SP2 machine, but which one and how do I re-open it?

There is no difference when ALL the firewalls are turned off either. Perhaps SP2 should be installed on the second PC?

Thank you,

Clive.

Re: Internet Connection Sharing

Try disconnecting network cable and reboot the offending computer, re-run the Network Wizard again on that same computer. Re-Connect cables. This once worked for me. (all protection should be off while u do this).

Hope it works 4 u.

Re: Internet Connection Sharing

I have had similar problems with XP Home, XP Pro and SP2. To overcome this I have gone to static IP address for my home network.

Just remember that the computer access the internet will have a 1 at the end of the IP address eg 10.10.100.1

The default gateway will be 10.10.100.1

and the dns on the client machines will be 10.10.100.1

hope this works for you

Re: Internet Connection Sharing

Hi,

This may or may not solve your problem.

If you look on the microsoft site, under sp2 support, Zone Alarm has known problems with sp2 and possabily the sp2 firewall. Go to the windows firewall advanced setting and check that the firewall has not blocked out Zone Alarm. With the ip addressing, set static addresses - reboot both pcs and then reset dymanic windows dhcp. This is added security because the network ip addresses change. With static, the service is wasted.

The HTTP port is port 80 and should be opened.

good luck