Connecting to Sonicwall VPN

Connecting to Sonicwall VPN

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Subject Author Date
Connecting to Sonicwall VPN jayscott1@gmail.com 10-03-2006
Posted by jayscott1@gmail.com on October 3, 2006, 1:54 pm
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We are having issues with people trying to connect from home. If they
connect directly into their DSL the VPN works great, but if they
connect from behind a router then they will connect but are unable to
use the network. I'm sure that the problem is because our network at
the office is a 192.168.1.0 network and the home networks are the same.
I'm sure that this isn't an uncommen problem. Does anyone have a
quick solution for this?


Posted by Andrew Rossmann on October 3, 2006, 5:02 pm
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[This followup was posted to comp.security.firewalls and a copy was sent
to the cited author.]

jayscott1@gmail.com says...
> We are having issues with people trying to connect from home. If they
> connect directly into their DSL the VPN works great, but if they
> connect from behind a router then they will connect but are unable to
> use the network. I'm sure that the problem is because our network at
> the office is a 192.168.1.0 network and the home networks are the same.
> I'm sure that this isn't an uncommen problem. Does anyone have a
> quick solution for this?

You need to change the range for one of the networks. Either change
the one at work to 192.168.x.0 (where x is something other than 1), or
the users need to go into their router setups and change theirs in a
similar way. They can all use the same address, as long as it does not
overlap with the corporate addressing.

I use Sonicwall, but our corporate network uses 172.30.x.x for
internal addressing. For various reasons, my DSL router (used when cable
goes down) is 192.168.2.x, and my cable router is 192.168.3.x.

This lists the range of 'private' addresses you can use that won't
work on the real Internet:
http://www.duxcw.com/faq/network/privip.htm

--
If there is a no_junk in my address, please REMOVE it before replying!
All junk mail senders will be prosecuted to the fullest extent of the
law!!
http://home.att.net/~andyross

Posted by jayscott1@gmail.com on October 4, 2006, 8:39 am
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That's what I was afraid of. I was hoping there was an easier way.

Thanks



Andrew Rossmann wrote:
> [This followup was posted to comp.security.firewalls and a copy was sent
> to the cited author.]
>
> jayscott1@gmail.com says...
> > We are having issues with people trying to connect from home. If they
> > connect directly into their DSL the VPN works great, but if they
> > connect from behind a router then they will connect but are unable to
> > use the network. I'm sure that the problem is because our network at
> > the office is a 192.168.1.0 network and the home networks are the same.
> > I'm sure that this isn't an uncommen problem. Does anyone have a
> > quick solution for this?
>
> You need to change the range for one of the networks. Either change
> the one at work to 192.168.x.0 (where x is something other than 1), or
> the users need to go into their router setups and change theirs in a
> similar way. They can all use the same address, as long as it does not
> overlap with the corporate addressing.
>
> I use Sonicwall, but our corporate network uses 172.30.x.x for
> internal addressing. For various reasons, my DSL router (used when cable
> goes down) is 192.168.2.x, and my cable router is 192.168.3.x.
>
> This lists the range of 'private' addresses you can use that won't
> work on the real Internet:
> http://www.duxcw.com/faq/network/privip.htm
>
> --
> If there is a no_junk in my address, please REMOVE it before replying!
> All junk mail senders will be prosecuted to the fullest extent of the
> law!!
> http://home.att.net/~andyross


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