rwabi at rediffmail
Jun 26, 2009, 10:03 AM
Dear VPNC Members,I am quiet new to this hence I could not get how exactly this functionality works. Kindly help me to understand this functionality.Here is my understaing about the VPNC. Let me know whether my understandiung is correct. (Also provide some anwsers)1)VPNC is client which can be used to communicate with the IPsec VPN gateways. 2) VPNC connects with the VPN gateway and the autheticates with it using the XAUTH (user name & password).3) Then it downloads the IPsec VPN configuration from the VPN gateway using group name (I would like to know how? Any specific protocol?) It might also get the remote IP address to be used from the corporate network/ VPN Gateway.4) Then it adds that policies on the system (for linux in the kernel) and configures the tunnel to use the IPsec in tunnel mode. (Does it negotiate the SAs using IKE? or use only preshared keys)OR the IKE is handled by triggering from IPsec on heating the policy and not finding th!
e SAs. 5) Then it when the user sends the traffic the policies will be applied on the traffic and SAs might be negotiated. Kindly provide your inputs for my better understanding.Also let me know whether there is any documentation that I can read for better understanding.Thanks in advance.Regards,Wabi