Network Instruments GigaStor 114ff - Manual (Page 125)

VPN
Appendix A TCP/IP ports, NAT, and VPN
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rev. 1
Figure 86 NAT
If the Observer is outside the network where the probe is running,
you must forward port 25903 from the Observer’s address. You must
use the NAT outside IP address as the probe’s IP address when trying
to redirect and/or administer the probe from Observer.
VPN
Using VPN is an easy way to get access to a probe on a remote LAN.
The most common configuration change is when redirecting the
probe. You must manually enter the Observer IP address. By default,
Observer will use the LAN IP address configured to Observer. You
must enter your VPN client’s IP address by selecting “Redirect to a
specified IP address” in the probe redirection dialog.
Select “Redirect to a specified IP address” in the Redirecting Probe or
Probe Instance dialog (Figure 86) and type the VPN client’s IP
address.