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More likely, you have either 1.) a route / NAT issue or 2.) a Subnet issue.<br />
<br />
So you have 3 VPNs?<br />
<br />
TZ400 (Main Office) &nbsp;&lt;---&gt; &nbsp;TZ205 <br />
TZ400 (Main Office) &nbsp;&lt;---&gt; &nbsp;TZ105<br />
TZ400 (Main Office) &nbsp;&lt;---&gt; &nbsp;TZ205W<br />
<br />
What are the IP subnets in each office? &nbsp;I suspect you have a conflict with routing between identical subnets.
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More likely, you have either 1.) a route / NAT issue or 2.) a Subnet issue.

So you have 3 VPNs?

TZ400 (Main Office)  <--->  TZ205
TZ400 (Main Office)  <--->  TZ105
TZ400 (Main Office)  <--->  TZ205W

What are the IP subnets in each office?  I suspect you have a conflict with routing between identical subnets.

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Hi. I have a Sonic Wall TZ400 in my main office and I've configure tree VPN. One from my TZ400 to a TZ205, one from my TZ400 to a TZ105 and one from my TZ400 to a TZ205W. The VPNs are working fine but I'm not able to ping from the LAN where is my TZ400 to the others LAN.<br />
<br />
Is there a settings missing?<br />
<br />
Thanks
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Hi. I have a Sonic Wall TZ400 in my main office and I've configure tree VPN. One from my TZ400 to a TZ205, one from my TZ400 to a TZ105 and one from my TZ400 to a TZ205W. The VPNs are working fine but I'm not able to ping from the LAN where is my TZ400 to the others LAN.

Is there a settings missing?

Thanks

Sonic Wall

Hardware-based firewalls provide more sophisticated protection for inbound and outbound traffic than the simple Windows software firewall or the basic NAT firewalls found in routers. These devices implement techniques such as stateful packet inspection, deep packet inspection, and content filtering; and may include built-in antivirus and anti-malware protection.

Hardware Firewalls

A virtual private network (VPN) is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or travelling users access to a central organizational network securely. VPNs encapsulate data transfers using secure cryptographic methods and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.