Hi Andrew, IP forwarding is enabled
cat /proc/sys/net/ipv4/ip_forward 1 The packets are not getting NAT'd after they arrive back to my GW. They are going back out my public as the originating IP that it was given from the virtual ip pool. E.g. 172.16.24.x I may also add that I have only 1 default GW on my GW and that is for the public. I do not have a GW set for my private network. I am trying to get it so that any packets that come from 172.16.24.x go back out to the private interface or to the default GW for that matter. Regards, Adrian Milanoski Lab Administrator BBOS WiFI VPN Dev. Security Testing Research In Motion Limited Tel.(289) 261-5801 | Cell: 647-289-6995 Email [email protected] -----Original Message----- From: Andreas Steffen [mailto:[email protected]] Sent: Friday, December 07, 2012 4:15 AM To: Adrian Milanoski Cc: [email protected] Subject: Re: [strongSwan] Routing Polices with IPTABLES not working Hi Adrian, have you enabled IP forwarding on your VPN gateway? echo 1 > /proc/sys/net/ipv4/ip_forward If yes, do you NAT packets from the private network behind the gateway going towards the Internet? If yes then you must exempt packets from the private network that are intended to go through the IPsec tunnel from NAT with the following iptables rule: iptables -t nat -I POSTROUTING 1 -s <private network> -o eth0 \ -m policy --dir out --pol ipsec --proto esp -j ACCEPT Regards Andreas On 06.12.2012 19:37, Adrian Milanoski wrote: > HI All, > > I have a strongSwan 5.0 setup and configure using IKEv2 PSK in config > mode with the GW providing a pool of addresses. However after the > strongSwan client connects I can only ping the Private interface of the > VPN GW. > > I was wondering if anyone can assist me with what maybe going on and why > packets are not routing out the private interface to the private > networks default GW. > > Why is it so difficult to get these packets flowing from the tunnel to > the private network? I thought the certain commands were to add rules in > to the IPtables and remove them when the tunnel is torn down. > > Any help would be much appreciated. > > *Regards,*** > > */ /* > > */Adrian Milanoski/* > BBOS Lab Administrator > > VPN / WLAN IOT / Pre-Cert > > Research In Motion Limited > 4715 Tahoe Blvd, Mississauga, > ON, Canada, L4W 0B5 > Tel.(289) 261-5801|Fax (905) 629-7836 > Email [email protected] <mailto:[email protected]>** > > > > > > > > Description: www.rim.com <http://www.rim.com/>Description: > cid:[email protected] ====================================================================== Andreas Steffen [email protected] strongSwan - the Linux VPN Solution! www.strongswan.org Institute for Internet Technologies and Applications University of Applied Sciences Rapperswil CH-8640 Rapperswil (Switzerland) ===========================================================[ITA-HSR]== --------------------------------------------------------------------- This transmission (including any attachments) may contain confidential information, privileged material (including material protected by the solicitor-client or other applicable privileges), or constitute non-public information. Any use of this information by anyone other than the intended recipient is prohibited. If you have received this transmission in error, please immediately reply to the sender and delete this information from your system. Use, dissemination, distribution, or reproduction of this transmission by unintended recipients is not authorized and may be unlawful. _______________________________________________ Users mailing list [email protected] https://lists.strongswan.org/mailman/listinfo/users
