I am trying to connect an RVL200 to a Cisco 1721 router with an IPSEC VPN. We have been using BEFSX41's for quite some time now without many problems. I want to upgrade for the increased throughput mainly. I can't seem to get the VPN client in the RVL200 to connect to the Cisco 1721. For reference, here are the settings from the BEFSX41: tunnel name: mars Local Secure Group: Type=Subnet IP=192.168.6.1 Mask=255.255.255.0 Remote Secure Group: Type=Subnet IP=192.168.1.134 Mask=255.255.255.0 Remote Security Gateway: Type=IP Addr. IP= xxx.xxx.xxx.xxx Encryption: DES Authentication: SHA Key Management: Auto (IKE) PFS: Disabled PSK: <hidden> Key Lifetime: 1000 Here is what I have set on the RVL200: Tunnel Name: mars Local Security Gateway Type: IP Only IP address: yyy.yyy.yyy.yyy Local Security Group: 192.168.6.0 Subnet Mask: 255.255.255.0 Remote Security Gateway Type: IP Only IP Address: xxx.xxx.xxx.xxx Remote Security Group Type: Subnet IP Address: 192.168.1.0 Subnet Mask: 255.255.255.0 Keying Mode: IKE with Preshared Key Phase1 DH Group: Group1 Phase1 Encryption: DES Phase1 Authentication: SHA1 Phase1 SA Lifetime: 1000 Perfect Forward Secrecy: <uncheched> Phase2 Encryption: DES Phase2 Authentication: SHA1 Phase2 SA Life Time: 1000 Preshared Key: <hidden> When I apply these settings and try to connect to the VPN, I get the following in the IPSEC log: Mar 15 07:24:30 2007 VPN Log [Tunnel Negotiation Info] >>> Initiator Send Main Mode 1st packet Mar 15 07:25:01 2007 VPN Log Ignoring Vendor ID payload [439b59f8ba676c4c...] Mar 15 07:25:01 2007 VPN Log Received Vendor ID payload Type = [draft-ietf-ipsec-nat-t-ike-03] Mar 15 07:25:01 2007 VPN Log Ignoring Vendor ID payload Type = [draft-ietf-ipsec-nat-t-ike-02_n] Mar 15 07:25:01 2007 VPN Log [Tunnel Negotiation Info] <<< Responder Received Main Mode 1st packet Mar 15 07:25:01 2007 VPN Log No acceptable Oakley Transform, No Proposal chosen. Please check your SA or preshared key setting Can anyone lead me in the right direction?