TechNote: VPN Configuration Case Studies
VPN Concepts, Tips, and Techniques 1-11
Version 1.0, July 2003
VPNC IKE Phase II Parameters
The IKE Phase 2 parameters used in Scenario 1 are:
•TripleDES
• SHA-1
• ESP tunnel mode
• MODP group 1
• Perfect forward secrecy for rekeying
• SA lifetime of 28800 seconds (one hour)
Testing and Troubleshooting
Once you have completed the VPN configuration steps you can use PCs, located behind each of
the gateways, to ping various addresses on the LAN-side of the other gateway.
You can troubleshoot connections using the VPN status and log details on the Netgear gateway to
determine if IKE negotiation is working. Common problems encountered in setting up VPNs
include:
• Parameters may be configured differently on Gateway A vs. Gateway B.
• Two LANs set up with similar or overlapping addressing schemes.
• So many required configuration parameters mean errors such as mistyped information or
mismatched parameter selections on either side are more likely to happen.
Intro2VPN.fm Page 11 Sunday, November 23, 2003 12:57 PM
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