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Issue with my Avaya IP office 500 with SOPHOS thru IPSec

Rodney Altamera

Hi to All Sophos Gurus!

Good day!

I have an issue with my client's network. One of his office is connected to their main office thru IPSec Site to Site VPN. The branch office is using SOPHOS XG310. The main office is using Cisco ASA 5505. The problem in the branch office we are using Avaya softphone connected to their Avaya IP Office 500 located at their main office. The problem we cannot connect our avaya. The other server such as CRM and file server we can connect.

The Tunnel is actually fully up and working with no issues. But when I check the logs I have discovered that everything is coomunicating on the other side except the Avaya SIP Server. There is upstream from the branch office to the main, but there is no downstream or response from the SIP Server. Please check below the IP details and screenshots.

Here are the logs.

 

Here are some graph of the traffic thru the tunnel.

 

 

Here is the vpn status showing both ends are good. The File Server, CRM Server and the Avaya IP Office 500 Server is located on the main office in one subnet 192.168.1.0/24.

Does anyone have any idea how to fix this? Or what is causing the issue.

Below is also the link to the article from SOPHOS Community which I followed to make the tunnel work.

https://community.sophos.com/products/xg-firewall/f/vpn/75579/xg-firewall-to-asa-5510-site-to-site-vpn

Does some have any idea how to fix this?

 

Thanks

 

Rodney



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  • 0 in reply to Jeremy Parr

    Hi Jeremy,

     

    Yes there is. I am able to contact the file server and CRM server which is the same subnet with the Avaya IP Office 500. The only weird thing I noticed from the logs is that there is no response from the Avaya. All the other traffic are working and passing thru the tunnel. On our end the softphone is sending packets upstream to the Avaya, but the SIP server is not responding.

     

    Thanks

     

    Rodney