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sfreedom
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Joined: Tue Mar 27, 2012 7:03 am

Need help (VPN)

Wed May 23, 2012 10:53 am

Need somebody help

I have RB751U vpn problem (Site to Site)

Server side is draytek 2820 for vpn server, other side are draytek 2700 and RB751U for vpn client
Ex. draytek 2820 IP is 192.168.0.1/24, draytek 2700 IP is 172.20.1.1/24, RB751U IP is 10.20.1.1/24
RB751U --> 2820 <-- 2700

At server side has application server. This server need client IP from client side

When vpn are connected from draytek 2700 and RB751U, draytek 2820 will dhcp ip to vpn client
Ex. when draytek 2700 or RB751U VPN to draytek 2820, they get IP 192.168.0.x

When client behind draytek 2700 use application server, server can see IP 172.20.1.x from client behind draytek 2700.
Client can use server.

But, in case RB751U same as draytek 2700, server can't see client IP 10.20.1.x behind RB751U.
it can see 192.160.0.x from drytek 2820 dhcp for RB751U, It make client can't use server

Should I fix somewhere on RB751U for resolve this ? :?

Thanks for all help.
 
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vasilevkirill
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Joined: Tue May 22, 2012 7:38 am
Location: Russian, Saint-Petersburg
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Re: Need help (VPN)

Thu May 24, 2012 11:24 am

You need to add the reverse route

rb750
172.20.1.0/24 --> pptp server 2820
192.168.0.0/24 --> pptp server 2820

draytek 2820
10.20.1.0/24 --> pptp client rb750
172.20.1.0/24 --> pptp client 2700

draytek 2700
10.20.1.0/24 --> pptp server 2820
192.168.0.0/24 --> pptp server 2820

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