Re: Can't start DHCP Service - fixed

From: Lance (lltbhill_at_link_earth.net)
Date: 08/08/04 

Date: Sat, 7 Aug 2004 21:08:15 -0700

>-----Original Message-----
>
>>-----Original Message-----
>>I had a problem last night with my home network
(802.11b
>Linksys router,
>>XP Pro/Home, wired/wireless mix) and fixed it by
>resetting my TCP/IP
>>stack. I hardly ever see this suggested, so maybe
>someone else can
>>benefit from my experience.
>
><snip>
>
>>My log file looks a lot like the sample. Can anyone
>venture a guess how
>>it can get so messed up?
>
>Found out what is was - Cisco 3000 VPN client. I can
>recreate the problem by doing a repair install of Cisco
>VPN. The problem gets fixed by resetting the TCP/IP
stack.
>
>Lance
>*****

I found the REAL fix is uninstalling and reinstalling
Cisco 3000 VPN client...at least I think so...my network
is working for now.

This is interesting and may help others. Turns out Cisco
3000 VPN client installs components of ZoneLabs'
ZoneAlarm firewall (vsdata.dll, vsdatant.sys, etc). I can
confirm this by uninstalling and reinstalling the Cisco
client - the ZoneAlarm files come and go along with the
client. Plus, the files are digitally signed by ZoneLabs.

My troubleshooting searching didn't find this info on
Google, VPN client help files, or even the Cisco support
forums. "ZoneLabs" or "ZoneAlarm" doesn't show up in
Add/Remove Programs or even searching the registry. But,
you can follow the directions for a manual uninstall of
ZoneAlarm firewall to remove these components.

I'm guessing this must have to do with a "Stateful
Firewall" on/off setting available in the Cisco client
settings. Somewhere along the line, something must have
gotten corrupted and the ZoneAlarm firewall components
got activated when they shouldn't have.

So if someone swears up and down that his system doesn't
have ZoneAlarm, but his symptoms point to a ZoneAlarm
problems - he may have Cisco VPN installed on his system.

After a fresh install of Cisco 3000 VPN client, my home
NetBIOS network works even when I'm using VPN to connect
to work - this is something I've never, ever been able to
do in the past.

Lance
*****

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