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Can I setup Multicast to work on a L2TP over IPsec connection

Hello,

I am trying to setup a Sophos SG 115 to exchange multicast-messages between clients in a directly connected network with vpn-clients, that are connected via a L2TP over IPsec connection. Is this possible in any way?

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Amodin over 2 years ago in reply to Svenn +1

You could do something like use GRE over IPSec, then multicast through GRE.

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0 BAlfson over 2 years ago

Hallo Svenn and welcome to the UTM Community!

Amodin was talking about a site-to-site VPN. I don't know of a remote access client that can do GRE, but it would be interesting if there were.

Cheers - Bob

Sophos UTM Community Moderator
Sophos Certified Architect - UTM
Sophos Certified Engineer - XG
Gold Solution Partner since 2005

MediaSoft, Inc. USA
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0 Amodin over 2 years ago in reply to BAlfson

I *think* Cisco has this ability with Easy VPN, but I don't know for sure.

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0 Amodin over 2 years ago in reply to BAlfson

I *think* Cisco has this ability with Easy VPN, but I don't know for sure.

OPNSense 64-bit | Intel Xeon 4-core v3 1225 3.20Ghz
16GB Memory | 500GB SSD HDD | ATT Fiber 1GB
(Former Sophos UTM Veteran, Former XG Rookie)
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0 BAlfson over 2 years ago in reply to Amodin

Interesting, but I don't know if the UTM IPsec remote access server can be made to do GRE. Almost 9 years ago, member mircevski proposed a way to do a site-to-site GRE with Cisco and I do have one client using that approach: https://community.sophos.com/utm-firewall/f/vpn-site-to-site-and-remote-access/54755/astaro-to-cisco-gre-tunnel. The last post in the thread is by da_merlin (Ulrich Weber) who was the original developer behind UTM (then, Astaro ASG) IPsec using StrongSWAN. You might also find ideas on the https://strongswan.org/ site.

If you're successful, please come back here and let us know the tricks.

Cheers - Bob

Sophos UTM Community Moderator
Sophos Certified Architect - UTM
Sophos Certified Engineer - XG
Gold Solution Partner since 2005

MediaSoft, Inc. USA
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