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{{MessageBox|backgroundcolor = #FBB|
image =Warning.png|
heading =WARNING|
message = This procedure could break networking, proceed with extreme caution!}}
'''NOTE:''' It is recommended that you shut down your current VPN before modifying configs and then restarting it after you finish configuring it.
Here's the procedure you need to follow in order to have your VPN clients get IP addresses in the same subnet as your HDA. This will enable certain traffic like broadcast traffic used in autodetection of protocols like [[DLNA]] and DHCP, cross your VPN bridge.
For example, if you HDA's IP is 192.168.0.2, by default, connecting to it using an OpenVPN client will give your client computer an IP address like 10.8.0.x.
The following procedure will change this so that your client will receive an IP address like 192.168.0.x.
These steps need to be done as '''root''' user:
{{Code|yum -y install bridge-utils
nano /etc/openvpn/openvpn-startup}}
Add this at the end of the file:
{{Text|Text=
<nowiki>#################################</nowiki>
<nowiki># Set up Ethernet bridge on Linux</nowiki>
<nowiki># Requires: bridge-utils</nowiki>
<nowiki>#################################</nowiki>
br<nowiki>=</nowiki>"br0"
tap<nowiki>=</nowiki>"tap0"
eth<nowiki>=</nowiki>"eth0"
eth_ip=`ifconfig <nowiki>|</nowiki> grep -A 1 $eth <nowiki>|</nowiki> tail -1 <nowiki>|</nowiki> awk -F':' '{printf $2}' <nowiki>|</nowiki> awk '{print $1}'`
eth_netmask=`ifconfig <nowiki>|</nowiki> grep -A 1 $eth <nowiki>|</nowiki> tail -1 <nowiki>|</nowiki> awk -F':' '{printf $4}' <nowiki>|</nowiki> awk '{print $1}'`
eth_broadcast<nowiki>=</nowiki>`ifconfig <nowiki>|</nowiki> grep -A 1 $eth <nowiki>|</nowiki> tail -1 <nowiki>|</nowiki> awk -F':' '{printf $3}' <nowiki>|</nowiki> awk '{print $1}'`
openvpn --mktun --dev $tap
brctl addbr $br
brctl addif $br $eth
brctl addif $br $tap
ifconfig $tap 0.0.0.0 promisc up
ifconfig $br $eth_ip netmask $eth_netmask broadcast $eth_broadcast
ifconfig $eth 0.0.0.0 promisc up}}
{{Code|nano /etc/openvpn/openvpn-shutdown}}
Add this text to the file:
{{Text|Text=#!/bin/sh
<nowiki>####################################</nowiki>
<nowiki># Tear Down Ethernet bridge on Linux</nowiki>
<nowiki>####################################</nowiki>
br<nowiki>=</nowiki>"br0"
tap<nowiki>=</nowiki>"tap0"
eth<nowiki>=</nowiki>"eth0"
eth_ip<nowiki>=</nowiki>`ifconfig <nowiki>|</nowiki> grep -A 1 $br <nowiki>|</nowiki> tail -1 <nowiki>|</nowiki> awk -F':' '{printf $2}' <nowiki>|</nowiki> awk '{print $1}'`
eth_netmask<nowiki>=</nowiki>`ifconfig <nowiki>|</nowiki> grep -A 1 $br <nowiki>|</nowiki> tail -1 <nowiki>|</nowiki> awk -F':' '{printf $4}' <nowiki>|</nowiki> awk '{print $1}'`
eth_broadcast<nowiki>=</nowiki>`ifconfig <nowiki>|</nowiki> grep -A 1 $br <nowiki>|</nowiki> tail -1 <nowiki>|</nowiki> awk -F':' '{printf $3}' <nowiki>|</nowiki> awk '{print $1}'`
ifconfig $br down
brctl delbr $br
openvpn --rmtun --dev $tap
if [ "$eth_ip" !<nowiki>=</nowiki> "" ]; then
ifconfig $eth $eth_ip netmask $eth_netmask broadcast $eth_broadcast
fi}}
{{Code|chmod +x /etc/openvpn/openvpn-shutdown
nano /etc/openvpn/amahi.conf}}
Remove the line that contains: ''dev tun''
and replace it with this:
{{Text|Text=mode server
tls-server
dev tap0}}
And remove (or comment out) the lines that start with ''server'' and ''ifconfig-pool-persist''.
{{Code|iptables -A INPUT -i tap0 -j ACCEPT
iptables -A INPUT -i br0 -j ACCEPT
iptables -A FORWARD -i br0 -j ACCEPT
service openvpn restart}}
* In your OpenVPN client (such as Amahi HDAConnect for Windows users) configuration, change ''dev tun'' with ''dev tap''. You'll also need to add a line that will make the client IP static:
{{Text|Text=ifconfig 192.168.0.x 255.255.255.0}}
Replace "x" in the IP address above with address you want your client to use.
[[Category: VPN]]
<!--UNFORMATTED VERSION
{{MessageBox|backgroundcolor = #FBB|
image =Warning.png|
Replace "x" in the IP address above with address you want your client to use.
[[Category: VPN]]-->
