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Cannot connect to Cisco ASA5505

Posted on 2010-09-21
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Last Modified: 2012-05-10
Hi.  For some strange reason I cannot connect to my ASA5505.  It was working fine and stopped working today.  I am not able to connect to any computers on the INSIDE and am not able to connect to the OUTSIDE (internet).  Firewall is up and lights are flashing.  I have tried using Putty and the ADSM console, but no luck connecting to the Firewall.  I am not sure how to troubleshoot this.  Can anyone provide tips?
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Question by:obautista
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kuoh earned 500 total points
ID: 33730719
Check that the Power, Status and Active LEDs are on solid and green.  Flashing or an amber color indicates problems and may require a console cable to troubleshoot further.
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by:obautista
ID: 33730735
Power and Active are solid green. Active is not lit at all. I have a console cable connected to it, but have never connected that way. What does the Active light on lit indicate?
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by:obautista
ID: 33730759
Sorry - I meant Power and Status are solid green.  Active is not on.
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by:kuoh
kuoh earned 500 total points
ID: 33730803
Active indicates that the ASA is up and forwarding traffic.  You're using the blue cable that came with the ASA with an RJ45 on one end and a DB9 serial on the other right?  If not, then you need to find that cable and connect the DB9 end to your PC's serial port.  Then you can use Hyperterminal to open the serial port, usually COM1 or COM2, with 9600,8,N,1.  Once the session is open, reset power to the ASA and you should see startup and status messages scroll by as the ASA performs startup diagnostics and boots the OS.  Hopefully, one of the messages will give us a clue to the problem.
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by:obautista
ID: 33730819
Sorry.  I do have the cable connected.  I have always used Putty to connect to it.  When I type in the IP of 192.168.1.1 on Port 23 it isnt connecting.  It always had before.
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by:kuoh
kuoh earned 500 total points
ID: 33730867
The console port is serial only, not IP, that's why it isn't connecting.  It is #3 in this image.

http://www.cisco.com/en/US/docs/security/asa/asa80/getting_started/asa5505/quick/guide/install.html#wp1069253

The console cable looks like this and may have an integrated DB9 or detachable RJ45 to DB9 adapter like in this image.

http://www.cisco.com/en/US/docs/security/asa/asa80/getting_started/asa5505/quick/guide/install.html#wp1064514

  I don't use Putty, so I don't know if it's capable of opening COM ports.  You should just use Hyperterminal for now so you can at least see the diag messages from the ASA.
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Author Comment

by:obautista
ID: 33730882
Thanks.  I installed HyperTerminal.  What is the command to reset the power?
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by:obautista
ID: 33730898
The window shows rommon #0> right now.
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by:kuoh
kuoh earned 500 total points
ID: 33730932
You can try "boot" or just pull the power plug, wait 5 seconds, plug it back in.
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by:obautista
ID: 33730943
Awesome!  "boot" worked.  I am back in business.  Thanks so much.  What do you suspect caused the problem?  It was working all along.
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by:kuoh
kuoh earned 500 total points
ID: 33730977
I would recommend a few more power cycles with the console cable connected to verify that the problem does not recur.  The ASA doesn't usually drop into ROMMON for no reason, so I'm leaning toward either a failing RAM or flash module.
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