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Sonicwall TZ 150

Posted on 2010-08-24
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Last Modified: 2012-05-10
Hello,

I have set this up for VPN - can get on VPN when on local network but not from outside.

What ports need forwarded to the sonicwall from my DSL Router?
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Question by:AUCKLANDIT
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digitap earned 250 total points
ID: 33517749
do you have a public ip address on the WAN interface of the sonicwall?  if not, then your modem is nat'ing which breaks IPSEC used with VPN connections.  put your dsl modem in transparent bridge mode to accomplish this.  what model of dsl modem do you have.  i'm also suprised that you can connect to the VPN internally.  that usually doesn't work.
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by:AUCKLANDIT
ID: 33517821
I can only connect to the VPN locally if doing via the i.p address of the VPN rather than my remote.mydomain.com

The I.P address I have on the WAN interface is 192.168.1.253 which is the IP of the sonicwall in my routers subnet.

the LAN interface is 10.0.0.254

If I change to transparent mode then it changes the WAN & LAN to the same IP?

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by:AUCKLANDIT
ID: 33517825
DSL Router - AWIRE 2701HGV-W Gateway
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by:digitap
ID: 33517917
When you put the modem into transparent bridge mode, then the WAN interface takes on the public ip address.  your LAN interfaces stays at the same IP address.  do you have a static ip or is it assigned by your isp using dhcp?  sometimes, the modem will be in bridge mode but still authenticate with PPPoE.  reviewing the manual, it looks like that's what this modem does.  search for bridge mode in the manual.

http://www.2wire.com/pages/pdfs/5100-000326-000.Rev.A.pdf
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by:AUCKLANDIT
ID: 33519811
I don't want to change anything on the modem as its already setup for other port forwards etc.

I did get it working by looking at what inbound ports was coming to it and opening them up, it appears to be an issue around port 500 as the inbound can be a random port but then gets translated to port 500.  What could this issue be as the next time logging in could be a different port so then does not work
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by:AUCKLANDIT
ID: 33520851
does anyone know the list of ports needed fwding to the sonicwall from the dsl router?
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by:digitap
ID: 33521056
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by:jimmyray7
jimmyray7 earned 250 total points
ID: 33522765
The WAN IP 192.168.1.253 is on a private range, and isn't routable.  This means you won't be able to reach it from the internet.  Do you have a public IP set up that forwards to the sonicwall?

I would put the DSL modem/router in bridged mode and assign the public IP directly to the Sonicwall's WAN interface.  This will make things much easier to manage, with the sonicwall handling all the firewall rules.
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by:digitap
ID: 33522806
@jimmy :: Do you read previous posts?  Setting to bridge mode has already been suggested and the author has indicated it's not an option.
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by:dosdet2
ID: 33523155
You are not going to be able to create a stable VPN over the internet without letting the sonicwall have direct access to the a public IP address.  The purpose of a VPN is to connect one local subnet to another local subnet securely across a "public subnet" (internet).    ie: subnet -> internet -> subnet

If the DSL Router is not in bridged mode then you are creating a path of subnet -> subnet -> internet -> subnet.  

The second subnet will not allow the two ending subnets to create a secure connection.  You are going to have to chose between a stable sonicwall VPN (and move your port forwards to the sonicwall) or go with a PC to PC VPN.  You may be able to get the sonicwall to enable a VPN with the DSL router being the gateway, but it will not be stable or secure.  What is the purpose of having a VPN if you have to give up it's security and stability?
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by:AUCKLANDIT
ID: 33525691
Thanks, I have a client who already has this setup with the same DSL modem and same Sonicwall - going to look at all their settings today - will post if some more info comes to light...
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by:digitap
ID: 33525826
cool...
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by:AUCKLANDIT
ID: 33546714
could not get onto other clients router to look, but copied their sonicwall settings.

I ended up using another DSL router and put the sonicwall in DMZ and it appears to work - just waiting now for the SonicWALL Global VPN Client License to come through from firewalls.com to let it let me on remotely.
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by:digitap
ID: 33546741
thanks for the points!
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