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akl4u2
New Contributor

VPN SSL TO IPSEC Tunneling just don't work

Hi all.

I have a main site and a remote site.

The main site is connected to the remote with IPsec Tunnel and it works perfect

I can also connect to the main site with SSL VPN without problems But When i'm trying to reach the remote site i can't

The main site is ==> 192.168.1.x

The remote site is ==> 10.0.0.x

SSL VPN ===> 172.17.0.X

I've tried everything i can - Static Route / Policy, Nothing Works

In the IPsec VPN Phase 2 it's 0.0.0.0 on both sides.

Any help how to solve this will me more then appreciated

 

Thank in advanced.

  

 

6 REPLIES 6
Toshi_Esumi
SuperUser
SuperUser

First of all, is SSL VPN "split tunnel" or client's internet comes over the SSL VPN when it's connected? If split, the fist thing I would suspect is 10.0.0.x/24 is not in the client machine's routing table, which should be automatically injected based on the policy.

The rest is just routeing between the main and the remote, especially the remote side to get back to 172.17.0.x since the selector is 0/0. I assume you already verified. Then check what traceroute shows from the client toward 10.0.0.x if it goes into the IPSec tunnel or not.

tanr
Valued Contributor II

Make sure you have the appropriate security policies in place too, from the ssl-vpn tunnel interface to the IPsec tunnel, etc.

akl4u2
New Contributor

I’ll will check it all and answer tomorrow at work, from the ssl-vpn to the IPSec I think I do have the appropriate security policies but I’ll upload pics tomorrow
Ashik_Sheik

Hi ,

 

KIndly enable NAT on SSL-VPN to IPSEC Tunnel Policy which will solve your routing issue.

 

Regds,

 

Ashik

Sheik Mahammad Ashik
Sheik Mahammad Ashik
akl4u2

Hi,

I've check everything - NAT didn't help :\

I've created new SSL-VPN group and associated it to "tunnel-mode"

In the "tunnel mode" checked the Enable split tunneling

In the Routing Address I've putt the main site local address object and the remote site address object

On the the Source IP Pools I've putt the SSL-VPN tunnel address object which is the IP range 172.16.0.100-135

Created a new security policy - incoming - ssl.root --> dest : "IPsec VPN" --> source the tunnel address object and the newly created group ---. dest : remote site local ip addresses object -- > always / all and accept.

 

in the remote site i created a new object for the ssl-vpn IP and Created a policy that says :

incoming int : IPsec VPN --. src: "ssl-vpn address" --> outgoing : LAN --> always / accept...

 

but still no go...

 

2 things that I've probably did something wrong...

when looking in the IP address that i'm getting from the SSL-VPN it on subnet 255.255.255.255 because it's from the IP range - Not sure how to create a proper static route in the remote site.

second, when i did trace route to the main site it went straight from my computer IP to the server address.

when i did a trace route to the remote site it looked like it's not going trough the tunnel and trying to go out to the internet instead even though the remote site address is in the SSL-VPN "tunnel mode".

 

Hope i wrote everything clear.

 

Thank you all.     

tanr
Valued Contributor II

Here are some details from my own SSL VPN setup with a connection in to the main location, needing access to the branch over the IPsec connection.  Note that you need to have specified an Source IP Pool object for the SSL VPN.

 

[ul]
  • At the main location: Security policy for SSL VPN to the IPsec VPN for the branch location[ul]
  • Source is the IP range given to the dialup SSL VPN users (specified in SSL VPN Source IP Pool)
  • Destination is the subnet of the branch location lan
  •  No NAT[/ul]
  • Main location (already) has a static route over IPsec to the branch location lan subnet
  • At the branch location: Security policy for IPsec interface to the lan interface accessed by SSL VPN users[ul]
  • Source is IP range given to the dialup SSL at the main location
  • Destination is the subnet of the branch location lan
  • No NAT[/ul]
  • Branch location needs a static route over the IPsec interface with destination of subnet given to SSL VPN users[/ul]

     

    Hope that helps.

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