Also having problems with both Firefox and Thunderbird since the
recent updates. Uninstalled both completely, cleared all settings,
clear cache and other happy stuff. Reinstalled FF 2.0.0.8 and still
can't connect to the net. Machine is Dell M50 with WinXP Pro SP2.

I fired up Wireshark to see what was happening and for some reason
Firefox is causing a broadcast on the LAN instead of connecting to the
Internet. My setup here is a bit different than a simple plug into a
low-end NAT "router" in that I have my LAN connected to a Cisco 1720
and Catalyst 2950 doing VLANs (dot1q) and my client/business associate
in the first floor office area is on a different LAN but is also
connected via the 1720 with one port on the Catalyst handling the
connection to her LAN. The Internet connection is on her lan using a
basic NAT box and I have my default gateway setup as the address of
the 1720's interface on my LAN with the router address on her LAN as
the default gateway of the router. As the cheapo NAT box connecting to
the Internet only runs RIP 1/2 it's set for RIPv2 as is the Cisco 1720
and the Linux server.

Key Cisco config items are:

router rip
version 2
network <my lan ip>
network <associates lan ip>
no auto-summary

! My Linux nameserver
ip name-server <ip of  my Linux box on my LAN>
! An external nameserver in the Pittsburgh area.
ip name-server 209.166.161.120

! Default route from "sh ip route" output
S*   0.0.0.0/0 [1/0] via <router interface IP on my associates LAN>

Everything has worked just dandy for a long time (about 5 years now)
and everything but Firefox 2.0.0.8 still does work. I run both DNS and
DHCP on my Linux server on my LAN and likewise all is fine.

When I try to start Firefox and go to Google.com Wireshark shows
everything else (DNS etc) communicating as expected but Firefox
instead of getting the IP address for Google from the internal (or
external) DNS starts broadcasting for www.google.com on the LAN.

>From command line "route print" shows all's happy and key items in
both LANs are pingable with instant response as are Internet
addressess such as google.com

With all other Internet access working justa' fine one has to assume
that there's something different in lastest release that isn't playing
nice OR a setting that needs tweaked. Any ideas beyond the usual clear
cache etc. most appreciated. (No firewalls blocking etc - all checked)

Couldn't find any thing even close to this via a Google search.

TIA!

Cheers!

Mike Shafer
Shafer Consulting
Pittsburgh, PA
www.its-secured.com

mbshafer wrote:
> Also having problems with both Firefox and Thunderbird since the
> recent updates. Uninstalled both completely, cleared all settings,
> clear cache and other happy stuff. Reinstalled FF 2.0.0.8 and still
> can't connect to the net. Machine is Dell M50 with WinXP Pro SP2.
> 
> I fired up Wireshark to see what was happening and for some reason
> Firefox is causing a broadcast on the LAN instead of connecting to the
> Internet. My setup here is a bit different than a simple plug into a
> low-end NAT "router" in that I have my LAN connected to a Cisco 1720
> and Catalyst 2950 doing VLANs (dot1q) and my client/business associate
> in the first floor office area is on a different LAN but is also
> connected via the 1720 with one port on the Catalyst handling the
> connection to her LAN. The Internet connection is on her lan using a
> basic NAT box and I have my default gateway setup as the address of
> the 1720's interface on my LAN with the router address on her LAN as
> the default gateway of the router. As the cheapo NAT box connecting to
> the Internet only runs RIP 1/2 it's set for RIPv2 as is the Cisco 1720
> and the Linux server.
> 
> Key Cisco config items are:
> 
> router rip
> version 2
> network <my lan ip>
> network <associates lan ip>
> no auto-summary
> 
> ! My Linux nameserver
> ip name-server <ip of  my Linux box on my LAN>
> ! An external nameserver in the Pittsburgh area.
> ip name-server 209.166.161.120
> 
> ! Default route from "sh ip route" output
> S*   0.0.0.0/0 [1/0] via <router interface IP on my associates LAN>
> 
> Everything has worked just dandy for a long time (about 5 years now)
> and everything but Firefox 2.0.0.8 still does work. I run both DNS and
> DHCP on my Linux server on my LAN and likewise all is fine.
> 
> When I try to start Firefox and go to Google.com Wireshark shows
> everything else (DNS etc) communicating as expected but Firefox
> instead of getting the IP address for Google from the internal (or
> external) DNS starts broadcasting for www.google.com on the LAN.
> 
>>From command line "route print" shows all's happy and key items in
> both LANs are pingable with instant response as are Internet
> addressess such as google.com
> 
> With all other Internet access working justa' fine one has to assume
> that there's something different in lastest release that isn't playing
> nice OR a setting that needs tweaked. Any ideas beyond the usual clear
> cache etc. most appreciated. (No firewalls blocking etc - all checked)
> 
> Couldn't find any thing even close to this via a Google search.

close the programs, open your firewall, and remove any and 
all settings for Firefox and Thunderbird.  Restart the 
programs.  Do they connect now?

-- 
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disregarded!!!!

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