PC Ekspert Forum - View Single Post - Tutorial za OpenVPN na routeru DD-WRT PC Engines

drazenram · 13.03.2012., 17:58

ALIX

Nasao sam u čemu je problem. Saki put kada DDNS promjene adresu na ADSL modemu od ISP-a , a sa obe je strane ADSL modem, ja izgubim VPN vezu. Provajder je u isto gradu i izgleda da mjenja IP istovremeno na oba modema i tada mi se desi prekid. Uredno je definiran DDNS host NO-IP na oba routera i sve radi do tog trenutka. Kako to riješiti. Pomoč žurrno mi je i hvala !

Sada cu uraditi po ovoj drugoj metodi možda ona pomogne
http://www.dd-wrt.com/wiki/index.php...ith_two_DD-WRT

A prva metoda je bila
ova dolje
This is a guide for creating a point to point VPN using the PPTP client and server, for people unable / bored etc... using the OpenVPN Client

I've made this small code because DD-WRT does not allow you to save a route running on a VPN tunnel on PPTP (or at least i haven't found another way), so there is no route going back from the server network to the client network.

Basically, the guide in the Wiki is fine for creating a VPN using the PPTP server and client parts of DD-WRT. I will not repeat those instructions, since they are fine. Just follow them to setup a PPTP VPN for the following locations. However, with this example only 1 site needs a PPTP server and the other PPTP client.

So, lets say we have 2 locations , LocationA and LocationB
Net details are as follows:
LocationA
Network: 192.168.1.0/24
Router IP: 192.168.1.254

LocationB
Network: 192.168.2.0/24
Router IP: 192.168.2.254

You setup the PPTP Server on LocationA and the PPTP Client on LocationB

However, while all pc's on B will be able to access any pc on A, the other is not possible (yet), because there isn't a route from A to go back to B.

To do this, log on the CLI of DD-WRT, and type the following command:

Code:

nvram set routes='route add -net 192.168.2.0 netmask 255.255.255.0 gw 192.168.2.254'nvram commit
This saves the variable "routes" with a route-add entry
However, we still need to apply this route AFTER the VPN Tunnel is up. To do this, we do the following:

(Again to save)

Code:

nvram set rc_startup='nvram get routes > /tmp/routescat /tmp/pptpd/ip-up /tmp/routes > /tmp/pptpd/ip-tempmv /tmp/pptpd/ip-temp /tmp/pptpd/ip-upchmod 700 /tmp/pptpd/ip-up'nvram commit
This basically runs on every startup, saves the route from the nvram variable to a file, and then adds that line to the last line of the ip-up script that runs when the PPTP server establishes the connection.

Izvor: http://www.dd-wrt.com/phpBB2/viewtopic.php?p=673426

13.03.2012., 17:58	#3
drazenram Registered User Datum registracije: Mar 2012 Lokacija: Mostar Postovi: 8	ALIX Nasao sam u čemu je problem. Saki put kada DDNS promjene adresu na ADSL modemu od ISP-a , a sa obe je strane ADSL modem, ja izgubim VPN vezu. Provajder je u isto gradu i izgleda da mjenja IP istovremeno na oba modema i tada mi se desi prekid. Uredno je definiran DDNS host NO-IP na oba routera i sve radi do tog trenutka. Kako to riješiti. Pomoč žurrno mi je i hvala ! Sada cu uraditi po ovoj drugoj metodi možda ona pomogne http://www.dd-wrt.com/wiki/index.php...ith_two_DD-WRT A prva metoda je bila ova dolje This is a guide for creating a point to point VPN using the PPTP client and server, for people unable / bored etc... using the OpenVPN Client I've made this small code because DD-WRT does not allow you to save a route running on a VPN tunnel on PPTP (or at least i haven't found another way), so there is no route going back from the server network to the client network. Basically, the guide in the Wiki is fine for creating a VPN using the PPTP server and client parts of DD-WRT. I will not repeat those instructions, since they are fine. Just follow them to setup a PPTP VPN for the following locations. However, with this example only 1 site needs a PPTP server and the other PPTP client. So, lets say we have 2 locations , LocationA and LocationB Net details are as follows: LocationA Network: 192.168.1.0/24 Router IP: 192.168.1.254 LocationB Network: 192.168.2.0/24 Router IP: 192.168.2.254 You setup the PPTP Server on LocationA and the PPTP Client on LocationB However, while all pc's on B will be able to access any pc on A, the other is not possible (yet), because there isn't a route from A to go back to B. To do this, log on the CLI of DD-WRT, and type the following command: Code: nvram set routes='route add -net 192.168.2.0 netmask 255.255.255.0 gw 192.168.2.254'nvram commit This saves the variable "routes" with a route-add entry However, we still need to apply this route AFTER the VPN Tunnel is up. To do this, we do the following: (Again to save) Code: nvram set rc_startup='nvram get routes > /tmp/routescat /tmp/pptpd/ip-up /tmp/routes > /tmp/pptpd/ip-tempmv /tmp/pptpd/ip-temp /tmp/pptpd/ip-upchmod 700 /tmp/pptpd/ip-up'nvram commit This basically runs on every startup, saves the route from the nvram variable to a file, and then adds that line to the last line of the ip-up script that runs when the PPTP server establishes the connection. Izvor: http://www.dd-wrt.com/phpBB2/viewtopic.php?p=673426 Zadnje izmijenjeno od: Nikky. 13.03.2012. u 18:40.