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Diffstat (limited to 'app/openvpn/contrib/openvpn-fwmarkroute-1.00')
3 files changed, 0 insertions, 115 deletions
diff --git a/app/openvpn/contrib/openvpn-fwmarkroute-1.00/README b/app/openvpn/contrib/openvpn-fwmarkroute-1.00/README deleted file mode 100644 index 66fe61ad..00000000 --- a/app/openvpn/contrib/openvpn-fwmarkroute-1.00/README +++ /dev/null @@ -1,44 +0,0 @@ -OpenVPN fwmark Routing -Sean Reifschneider, <jafo@tummy.com> -Thursday November 27, 2003 -========================== - -These scripts can be used with OpenVPN up and down scripts to set up -routing on a Linux system such that the VPN traffic is sent via normal -network connectivity, but other traffic to that network runs over the VPN. -The idea is to allow encryption of data to the network the remote host is -on, without interfering with the VPN traffic. You can't simply add a route -to the remote network, becaues that will cause the VPN traffic to also try -to run over the VPN, and breaks the VPN. - -These scripts use the Linux "fwmark" iptables rules to specify routing -based not only on IP address, but also by port and protocol. This allows -you to effectively say "if the packet is to this IP address on this port -using this protocol, then use the normal default gateway, otherwise use the -VPN gateway. - -This is set up on the client VPN system, not the VPN server. These scripts -also set up all ICMP echo-responses to run across the VPN. You can -comment the lines in the scripts to disable this, but I find this useful -at coffee shops which have networks that block ICMP. - -To configure this, you need to set up these scripts as your up and down -scripts in the config file. You will need to set these values in the -config file: - - up /etc/openvpn/fwmarkroute.up - down /etc/openvpn/fwmarkroute.down - up-restart - up-delay - - setenv remote_netmask_bits 24 - -Note: For this to work, you can't set the "user" or "group" config options, -because then the scripts will not run as root. - -The last setting allows you to control the size of the network the remote -system is on. The remote end has to be set up to route, probably with -masquerading or NAT. The network this netmask relates to is calculated -using the value of "remote" in the conf file. - -Sean diff --git a/app/openvpn/contrib/openvpn-fwmarkroute-1.00/fwmarkroute.down b/app/openvpn/contrib/openvpn-fwmarkroute-1.00/fwmarkroute.down deleted file mode 100755 index 87d67d4d..00000000 --- a/app/openvpn/contrib/openvpn-fwmarkroute-1.00/fwmarkroute.down +++ /dev/null @@ -1,22 +0,0 @@ -#!/bin/sh -# -# Bring down vpn routing. - -# calculate the network address -remote_network=`ipcalc -n "$remote"/"$remote_netmask_bits"` -remote_network="${remote_network#*=}" - -# clear routing via VPN -ip route del "$remote_network"/"$remote_netmask_bits" via "$5" table vpn.out -ip route del table vpnonly.out via "$5" -iptables -D OUTPUT -t mangle -p "$proto" \ - -d "$remote_network"/"$remote_netmask_bits" \ - --dport "$remote_port" -j ACCEPT -iptables -D OUTPUT -t mangle -d "$remote" -j MARK --set-mark 2 - -# undo the ICMP ping tunneling -iptables -D OUTPUT -t mangle --protocol icmp --icmp-type echo-request \ - -j MARK --set-mark 3 - -# flush route cache -ip route flush cache diff --git a/app/openvpn/contrib/openvpn-fwmarkroute-1.00/fwmarkroute.up b/app/openvpn/contrib/openvpn-fwmarkroute-1.00/fwmarkroute.up deleted file mode 100755 index 661ec313..00000000 --- a/app/openvpn/contrib/openvpn-fwmarkroute-1.00/fwmarkroute.up +++ /dev/null @@ -1,49 +0,0 @@ -#!/bin/sh -# -# Bring up vpn routing. - -# calculate the network address -remote_network=`ipcalc -n "$remote"/"$remote_netmask_bits"` -remote_network="${remote_network#*=}" - -# add the stuff that doesn't change if it's not already there -grep -q '^202 ' /etc/iproute2/rt_tables -if [ "$?" -ne 0 ] -then - echo 202 vpn.out >> /etc/iproute2/rt_tables -fi -grep -q '^203 ' /etc/iproute2/rt_tables -if [ "$?" -ne 0 ] -then - echo 203 vpnonly.out >> /etc/iproute2/rt_tables -fi -ip rule ls | grep -q 'lookup vpn.out *$' -if [ "$?" -ne 0 ] -then - ip rule add fwmark 2 table vpn.out -fi -ip rule ls | grep -q 'lookup vpnonly.out *$' -if [ "$?" -ne 0 ] -then - ip rule add fwmark 3 table vpnonly.out -fi - -# route VPN traffic using the normal table -iptables -A OUTPUT -t mangle -p "$proto" -d "$remote" --dport "$remote_port" \ - -j ACCEPT - -# route all other traffic to that host via VPN -iptables -A OUTPUT -t mangle -d "$remote_network"/"$remote_netmask_bits" \ - -j MARK --set-mark 2 - -# route all ICMP pings over the VPN -iptables -A OUTPUT -t mangle --protocol icmp --icmp-type echo-request \ - -j MARK --set-mark 3 - -# NAT traffic going over the VPN, so it doesn't have an unknown address -iptables -t nat -A POSTROUTING -o "$1" -j SNAT --to-source "$4" - -# add routing commands -ip route add "$remote_network"/"$remote_netmask_bits" via "$5" table vpn.out -ip route add table vpnonly.out via "$5" -ip route flush cache |