Port Forwarding for the Cisco

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# Telnet to Router and enter provided username and password
# Then follow these steps to setup port forwards
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# To enter Admin Mode ( will require root password )
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Type enable at the prompt

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# To show currently configured Interfaces ( there could be several )
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Type show ip interface at the prompt.

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# To show Current Port Forwards on Router

Type show ip nat translations at the prompt.

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# To Enter Configuation Mode
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Type configure at the prompt.

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# To add Port Forwarding rules modify then type the following commands at the prompt.
# Note: "BVI1" was the found interface name from running command "show ip interface"
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ip nat inside source static (TCPorUDP) (YourCompsIP) (PortToForward) interface BVI1 (PortToForward)

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# To forward port 3389 TCP to the computer that had the 172.16.2.60 ip address you would do the following.
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ip nat inside source static tcp 172.16.2.60 3389 interface BVI1 3389

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# End Configure Session
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Press CTRL-Z

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# Once you have entered the config, test it out and if it works,
# issue this command to make it persistent:
#

NfSen

NfSen is a graphical web based front end for the nfdump netflow tools.

NfSen allows you to:

• Display your netflow data: Flows, Packets and Bytes using RRD (Round Robin Database).

• Easily navigate through the netflow data.

• Process the netflow data within the specified time span.

• Create history as well as continuous profiles.

• Set alerts, based on various conditions.

• Write your own plugins to process netflow data on a regular interval.

Different tasks need different interfaces to your netflow data. NfSen allows you to keep all the convenient advantages of the command line using nfdump directly and gives you also a graphical overview over your netflow data.
NfSen is available at sourceforge and distributed under the BSD license. 

Link: http://nfsen.sourceforge.net/