Broadcast UDP over VPN

Posted by ibmz on Server Fault See other posts from Server Fault or by ibmz
Published on 2010-04-12T06:55:43Z Indexed on 2010/04/12 7:03 UTC
Read the original article Hit count: 432

Filed under:

openvpn

|

iptables

|

udp

|

broadcast

I have OpenVPN configured and have 5 dd-wrt router clients. I would like the machines on those routers to be-able to UDP Broadcast across all 5 networks.

I cannot bridge the interfaces(to my knowledge) because each router needs to be able to operate on its own should the VPN connection die (dhcp needs to work).

currently each router has its own /24 (eg 192.168.1.x) network. Is there a way to use IPTables to mangle the udp and forward them to all VPN Clients?

To summarize i need
1)to UDP broadcast to all routers and their clients
2)for all routers to be able to operate independently should the VPN go down

© Server Fault or respective owner

Related posts about openvpn

Encouter error "Linux ip -6 addr add failed" while setting up OpenVPN client

as seen on Server Fault - Search for 'Server Fault'
I am trying to set up my router to use OpenVPN and have gotten quite far (I think), but something seems to be missing and I am not sure what. Here is my configuration for the client: client dev tun proto udp remote ovpn.azirevpn.net 1194 remote-random resolv-retry infinite auth-user-pass /tmp/password… >>> More
OpenVpn: Setting Up Openvpn in Ubuntu 10.04

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I am trying to setup OpenVpn Server on Ubuntu 10.04. I am not good in network concepts so its hard to understand the IP address that are given in the setup tutorial.. I could find many sites to setup openvpn server but i have few doubts in it. 1.I am mainly setting up the server to make it work… >>> More
pfsense peer-to-peer OpenVPN not connecting

as seen on Server Fault - Search for 'Server Fault'
I'm trying to setup a peer-to-peer OpenVPN between two pfsense servers running 2.0.1-RELEASE, but the client keeps getting the connection dropped, with a status of "reconnecting; ping-restart" and nothing appears to be routing between them. Both these firewalls are also doing PPTP VPNs that are working… >>> More
OpenVPN not connecting

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
There have been a number of post similar to this, but none seem to satisfy my need. Plus I am a Ubuntu newbie. I followed this tutorial to completely set up OpenVPN on Ubuntu 12.04 server. Here is my server.conf file ################################################# # Sample OpenVPN 2.0 config file… >>> More
openVPN GUI does not run error about error opening registry for reading HKLM\SOFTWARE\OpenVPN

as seen on Super User - Search for 'Super User'
I'm trying to run OpenVPN as a portable application and to that effect i have installed it on a Windows 7 machine, copied the files to another windows 7 machine and manually restored the registry settings using a .reg file. Whenever i try to run open vpn GUI i get the following error error opening… >>> More

Related posts about iptables

Sometimes this script fails to update the iptables

as seen on Server Fault - Search for 'Server Fault'
It does not happen often, but sometimes after running the below script, checking the iptables with service iptables status shows that they weren't updated and the script doesn't output any error. The iptables is structured as look-up tree (long repeated sections snipped): #!/bin/sh iptables -t… >>> More
My current iptable configuration doesn't work [on hold]

as seen on Server Fault - Search for 'Server Fault'
sudo chkconfig iptables off /etc/init.d/iptables on ### Clear/flush iptables sudo iptables -F sudo iptables -P INPUT ACCEPT sudo iptables -P OUTPUT ACCEPT sudo iptables -P FORWARD ACCEPT ### Allow SSH iptables -A INPUT -i eth0 -p tcp --dport 22 -m state --state NEW,ESTABLISHED -j ACCEPT iptables… >>> More
L2TP iptables port forward

as seen on Server Fault - Search for 'Server Fault'
Hi all, I'm setting up port forwarding for an L2TP VPN connection to the local Windows 2003 VPN server. The router is a simpel Debian machine with iptables. The VPN server works perfect. But I cannot log in from the WAN. I'm missing something. The VPN server is using a pre-shared key (L2TP) and… >>> More
iptables -P FORWARD DROP makes port forwarding slow

as seen on Server Fault - Search for 'Server Fault'
I have three computers, linked like this: box1 (ubuntu) box2 router & gateway (debian) box3 (opensuse) [10.0.1.1] ---- [10.0.1.18,10.0.2.18,10.0.3.18] ---- [10.0.3.15] | box4, www [10.0.2.1] Among other… >>> More
IPtables AWS EC2 NAT/Reverse NAT - For Reverse Proxy style setup but with IPtables

as seen on Server Fault - Search for 'Server Fault'
I was thinking initially needing to do a reverse proxy or something so I could get some SSL/TLS traffic look like it is being terminated at a server and IP address in the AWS cloud, and then that traffic is forwarded onto our actual web servers that aren't in the cloud... I've not done much iptables… >>> More