HINT: Cross-VPN broadcast discovery (I used for Retrospect)

Post new topic   Reply to topic    DD-WRT Forum Forum Index -> Broadcom SoC based Hardware
Author Message
MrPete
DD-WRT User


Joined: 09 Jul 2013
Posts: 74

PostPosted: Wed May 30, 2018 20:47    Post subject: HINT: Cross-VPN broadcast discovery (I used for Retrospect) Reply with quote
Here's a simple hint for those who use DD-WRT together with OpenVPN to link subnets into a single LAN.

Our Retrospect backup software uses subnet broadcast discovery to find all client machines. It's easy to add all of the required subnets to Retrospect... but the broacasts (on port 497) were not getting through.

I'm using a Kong build. From SSH:

1) Ensure "bcrelay" is available. Just attempt to run bcrelay from the command line. If you get some help, you're in good shape.

2) You need to know your OpenVPN virtual device name at the *client* end of the link. It's listed in the current OpenVPN status. Mine is "tun1"

3) At the *client* end of the link, add a command to the Admin Startup command list:

bcrelay -i tun1 -o br0 -d

This relays all (UDP) broadcasts received from the other end of the VPN link, out onto your local (br0) LAN.

For me, that was sufficient.
Sponsor
Display posts from previous:    Page 1 of 1
Post new topic   Reply to topic    DD-WRT Forum Forum Index -> Broadcom SoC based Hardware All times are GMT

Navigation

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum