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no hair-pinning allowed seems to be it.
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I have a box to box vpn setup between two offices.<br />
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In office T, the network is 192.168.240.1. In office A, the network is 192.168.250.1. The box to box VPN and static route from A to T works great. I can ping any machine on either network.<br />
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THere is a wrinkle here though... Box A's gateway is 192.168.250.1. THey have a Comcast Cable service. So, the WAN interface of the firewall that is doing the box to box VPN (m0n0wall) is plugged into a comcast gateway. From the 192.160.250.0/24 network, we can access the comcast box by typing 10.1.10.1. It works. From the T network, it doesn't.<br />
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I tried setting up a static route from 192.168.240.0/24 -&gt; Gateway(192.168.250.1) -&gt; 10.1.10.0/24, but the local gateway (T) just tells me that 10.1.10.1 is not reachable (message originates from 192.168.240.1, the gateway in office T). <br />
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How should I be setting up this static route?
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I have a box to box vpn setup between two offices.

In office T, the network is 192.168.240.1. In office A, the network is 192.168.250.1. The box to box VPN and static route from A to T works great. I can ping any machine on either network.

THere is a wrinkle here though... Box A's gateway is 192.168.250.1. THey have a Comcast Cable service. So, the WAN interface of the firewall that is doing the box to box VPN (m0n0wall) is plugged into a comcast gateway. From the 192.160.250.0/24 network, we can access the comcast box by typing 10.1.10.1. It works. From the T network, it doesn't.

I tried setting up a static route from 192.168.240.0/24 -> Gateway(192.168.250.1) -> 10.1.10.0/24, but the local gateway (T) just tells me that 10.1.10.1 is not reachable (message originates from 192.168.240.1, the gateway in office T). 

How should I be setting up this static route?

Static Route over VPN

The variety of Linux distributions creates myriad issues relating to configuration and operations when computers are networked, not the least of which is the use of various network management applications, some of which are included with specific distributions, while others are standalone applications.

Linux Networking

Software firewalls, also known as host-based firewalls, provide a layer of software on one host that controls network traffic in and out of that single machine. Most operating systems now include firewall software, but many available software firewalls include central distribution, antivirus systems and disaster recovery.

Software 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.