SonicWALL TZ 105 Subnet Communication

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Chroma27

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Jun 28, 2013
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I'm not very network savvy but my issue is regarding an integration between an existing network that we are piggybacking off of and are trying to communicate our device through their network.

The setup is as follows -
- The client's modem connects to their router.
- The router feed DHCP IP to their switches
- SonicWALL TZ 105 (My router) is connected to one of their ports on the switch
- Our switch is connected to our router.

Client's router
- default gateway is 192.168.1.1
- subnet 255.255.255.0
SonicWALL TZ 105
- default gateway is 192.168.2.1
- subnet 255.255.255.0

I want our network to communicate with theirs so that we can pull up our devices on their network.

Would I need to create a VLAN or a port forwarding? How would I go about doing these?
 
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lotussama

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Dec 19, 2006
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You would need a route on the Client's router to send traffic destined to 192.168.2.0/24 to 192.168.2.1, and a return route on your router to send 192.168.1.0/24 to 192.168.1.1.
 
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choucove

choucove

Distinguished
May 13, 2011
756
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19,360


This is pretty much the idea you need to follow. The problem though is that your Sonicwall TZ 105 is probably doing its job as a firewall and blocking network access. Your WAN port is probably connected to the client's switch port, meaning this is your route to get out to the internet. However, the Sonicwall is going to block access from the "outside WAN" untrusted zone to the "inside LAN" trusted zone. That's what a firewall is meant for. To allow network access through you will need to do something a little different. One way is to allow port-forwarding, NAT, and firewall access rules to allow traffic from the WAN zone through to your LAN zone or better individual IP addresses (or Address Objects) in your LAN zone. Another option is to set up a DMZ zone separate from your primary LAN. Any devices that need to be shared to the outside client network should be put in the DMZ, but be careful as this opens ALL ports up to outside traffic.

 
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