Data Capture And Examine; Figure 10: Two End Points Of The Vpn Tunnel - Nortel 200 Technical Configuration Manual

Technical Configuration Guide:
SOHO Secure RAS with VPN Gateway and VPN Router

2.13 Data Capture and Examine

The Ethereal Network Analyzer is installed on PC-2 on the Headquarter private LAN for capturing and examining
data from a live network.
Start Ethereal, and go to Capture -> Interfaces. Select Interface of "192.168.2.12" for capturing. Make phone calls
and file transfers over SOHO and Headquarter. The captured data can be used to demonstrate SOHO BO VPN
security.
Stop Ethereal capturing, and in the Ethereal Display Bar, select the fields of Source or Destination, looking for the
IP addresses of the two end points of IPSec VPN tunnel.
In the LAB demo, the IP addresses of the two end points of the IPSec BO tunnel are: 192.168.2.241 (WAN
interface on VR221), and 192.168.2.100 (VPN portal on NVG). See below diagram and refer to the diagram of
the "Lab Topology" for complete LAB topology.
VR221, WAN
192.168.2.241
_______________________________________________________________________________________________________________________
38
IPSec BO tunnel
VR221 - NVG

Figure 10: Two End Points of the VPN Tunnel

External Distribution
V1.0 September, 2006
NVG (portal IP)
192.168.2.100
NORTEL