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How to configure port monitoring for screendoor

Posted on 2008-10-15
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Last Modified: 2012-05-05
Need to configure ports to monitor internet access
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Question by:jammin_j
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6 Comments
 
LVL 16

Expert Comment

by:Aaron Street
ID: 22724490
what are you configuring the ports on?

what types of switchs/ routers?

on a cisco switch you simple

type

#monitor session 1 source g1/0/2
#monitor session 1 destination g2/0/3

or some thing like that ;)
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Author Comment

by:jammin_j
ID: 22724801
Precisely, on the Cisco. I have the source as the firewall and the destination the Screendoor.
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LVL 16

Expert Comment

by:Aaron Street
ID: 22728563
so what do you actuly need to know?

on a cisco thats all you need to do tell the switch what port you want to use as source, and what port you want to send the mirrored data to. and then attach the monitering PC/software to that destination port.

 
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Author Comment

by:jammin_j
ID: 22736383
I put monitor destination on the listening port and the source as our pix firewall, and still no filtering. Is this not correct?
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LVL 16

Expert Comment

by:Aaron Street
ID: 22738494
yes that should be fine.

you need to make sure that you monitor traffic in both ways in/out

if you are not sure you ahve it right. Put a PC on the monitering port and then look to see how its network card stats are mounting up. you should see a lot of packets hitting it if the monitering is set up corredctly. to be sure down load wire shark on to it and capture some data to see if the port is being mirrored correctly.

if you do a "show monitor" on  the cisco swith what dose it desplay?
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Accepted Solution

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jammin_j earned 0 total points
ID: 22836181
It was the silly screendoor software. ScreenDoor blames Cisco... Cisco confirmed monitoring operational. I updated the Screendoor Software and... BINGO!

Done!
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