PNAgent with NATing

Sometimes you need to set NAT for your Citrix server. You have to use the command altaddr to let your Citrix know your WAN ip address.

Then you need to edit the file c:\inetpub\wwwroot\citrix\PNAgent\conf\webinterface.conf and edit ClientAddressMap to tell when the WAN ip must be sent back to the customer (i.e. a user connecting from outside the internet).

Linux Network Tools

Here are some of my favorites network tools.
NTOP (http://www.ntop.org): determine which host use which protocols, bandwidth ...
IFTOP (http://www.ex-parrot.com/pdw/iftop) : live view of your bandwidth
BANDWIDTHD (http://bandwidthd.sourceforge.net/) : report of your host's bandwidth

These tools need to be run on a bridge or on a Linux machine connected to a monitoring port on a switch.