XP 2, Den 1

[den]

Once again XP at work defeats me. The design PC was connecting to the internet yesterday, and today it doesn't. It can see my PC, and I can see it. Both PCs can print off each other's printers. My PC can see the internet and the router. The other PC can't see either, or send email.

The settings are the same. Turning off the firewall doesn't help.

I checked the filtering on the router, which what caught me last time.

I bang my head on the keyboard.

Nothing helps except for the banging of the head.

Comments

[theweaselking.livejournal.com]

XP is much easier than 98. Really.

MS has a KB article on code 65. (http://support.microsoft.com/kb/316414) Are you using Zone Alarm, and have you enabled ICS? If either of those is true, run, do not walk, and GET RID OF THAT SHIT. Or, at least, disable ICS (http://support.microsoft.com/default.aspx?scid=kb;EN-US;306126) and UNINSTALL Zone Alarm, and see if it fixes the problem. No, disabling Zone Alarm does not disable Zone Alarm. You *need* to uninstall it.


Apart from that, I'm going to summarise:
The broken machine cannot ping or reach the router's web interface.
It cannot ping your machine.
It *can* reach shared folders on your PC.
It *does* have a good IP.
It *cannot* reach the web via IP or name.

Is that correct?

Under network connections, there *should be* only the LAN. As far as your computer is concerned, the LAN is the internet, since it goes out to the router first before reaching the internet anyway.

More questions:
Static IP or DHCP?
What kind of connection on the far side of the router (cable, DSL, T1, other?)
Can you plug this computer into that connection directly and see what happens?
Are you using a firewall other than Windows Firewall? If so, what program?

At this point, I think the machine is the problem, specifically something in software. The trick is, now, to nail down WHAT that problem is.

[dewhitton.livejournal.com]

ZoneAlarm! Dammit. It was installed but not run. I use ZoneAlarm at home and have never had a problem with it. It was installed but not running on the other PC, but not causing problems until yesterday. I've just uninstalled it and all the connections came back.

So now the only firewall I have on the office PCs is an Windows. What free firewall would you recommend, if not ZoneAlarm?

[theweaselking.livejournal.com]

I used to use Sygate Personal Firewall, but it no longer exists.

These days, if I'm behind a router? I use Windows Firewall and be done with it. And I'm always behind a router.

I've heard good things about Zone Alarm from other people. I've just never seen them, ever. I don't like the product because it causes exactly this kind of problem, and has for most of the last decade.