can ping others and browse web, just can't ping self?

[peter]

I have a dell 700m laptop set up with tcp/ip on the broadcom wired ethernet.

I can browse web, can ping my other PC (192.168.1.100) on the LAN.

I can also ping 127.0.0.1, but I cannot ping self using dhcp assigned IP
address (192.168.1.101). I have disabled all firewalls. What else could be
the cause? Is there some network diagnostic tool I can use to give me a
hint?

 

[Steve Winograd [MVP]]

I have a dell 700m laptop set up with tcp/ip on the broadcom wired ethernet.

I can browse web, can ping my other PC (192.168.1.100) on the LAN.

I can also ping 127.0.0.1, but I cannot ping self using dhcp assigned IP
address (192.168.1.101). I have disabled all firewalls. What else could be
the cause? Is there some network diagnostic tool I can use to give me a
hint?

Failure to ping a computer's own IP address is usually caused by a
misconfigured firewall program. Un-install (don't just disable) any
firewall program and try it again.

You say that you've "disabled all firewalls". Running more than one
firewall can cause problems. If you've installed a firewall program
(Norton, McAfee, ZoneAlarm, PC-cillin, etc), disable the built-in
Windows Firewall.
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com

 

[peter]

Failure to ping a computer's own IP address is usually caused by a
misconfigured firewall program. Un-install (don't just disable) any
firewall program and try it again.

I uninstalled zonealarm and the ping result is the same ("Request time
out"). Any other ideas?
I hope I won't have to re-install windowxp to fix this.

 

[Steve Winograd [MVP]]

I uninstalled zonealarm and the ping result is the same ("Request time
out"). Any other ideas?
I hope I won't have to re-install windowxp to fix this.

ZoneAlarm sometimes doesn't un-install cleanly. Go to Start | Run |
Msconfig and disable any ZA remnants in the Services and Startup tabs.
Then, type this line at a command prompt to reset TCP/IP, and reboot:

netsh winsock reset catalog
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com

 

[AJR]

You state you can browse the web - exactly what is the problem. If you can
ping 127.0.0.1 (pr localhost) you are pinging your computer. Have you tried
to ping 192.168.0.1 from the other PC (192.168.1.100)?

 

[peter]

ZoneAlarm sometimes doesn't un-install cleanly. Go to Start | Run |
Msconfig and disable any ZA remnants in the Services and Startup tabs.
Then, type this line at a command prompt to reset TCP/IP, and reboot:

netsh winsock reset catalog

I tried everything you said and it still didn't work.

I also tried connecting two PCs together with firewire networking with the
same result, namely, the bad laptop can ping the desktop PC, the desktop PC
can ping itself, but the bad laptop cannot ping its own IP, except
127.0.0.1. I even put it in safe mode, with the same result.

Is there any system services I might have disabled by accident that is
required to respond to pings?