Solved

weird pix issue

Posted on 2009-04-05
6
294 Views
Last Modified: 2012-05-06
I had a pix firewall operating in a live environment till everybody reported that things are down .. when i consoled into the pix, running config was fine and all static routes were already there ... all interfaces were up/up ... But this is what was weird .. If i would ping to any directly connected interface of the pix (whether that be the router on its inside or its pix's gateway i.P) it would straight away come up with ????? ...Usually it tries and waits and goes slowly, ? then in a couple of seconds, ? and so on ... but this time it displayed all 5 question marks ????? in 1 sec as if its not even trying to attempt to ping ....
I had to restart the pix to get over this issue ... but i mean can somebody tell me if there is anything with the pix firewalls in general like this...was this some kind of a DOS attack ? what was it !
0
Comment
Question by:nabeel92
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 3
6 Comments
 
LVL 23

Expert Comment

by:debuggerau
ID: 24074357
sure can be, I'd suspect it is not the latest firmware, a late version 7 or version 8..

I'm assuming it is set up securely though...
0
 

Author Comment

by:nabeel92
ID: 24074496
It's the latest version ...
Relevant ACL is applied at the outside interface protected the inside and DMZ network ...
0
 

Author Comment

by:nabeel92
ID: 24074498
Version is 8.0
0
Raise the IQ of Your IT Alerts

From IT major incidents to manufacturing line slowdowns, every business process generates insights that need to reach the people required to take action. You need a platform that integrates with your business tools to create fully enabled DevOps toolchains.

You need xMatters.

 
LVL 23

Expert Comment

by:debuggerau
ID: 24074578
have you a syslog server to check the logs?

What other equipment may have had an impact, like a layer 3 switch or something?

not over-driving it either?
Enough memory? Not too many features enabled for its power?

0
 

Author Comment

by:nabeel92
ID: 24074600
nah, its a new network and yet to design an SNMP system...All other equipments were fine. Pix was not even able to ping its directly connected router. No abnormal Spike in CPU or memory usage on PIX as well. I know its one of the most weird issues I've come across and been googling and trying to find answer on cisco as well but no joy !
Ok, it would have made sense if it would come up with Not enough memory, or if there was a spike in CPU usage coz those 2 ive seen are always the symptoms of the DOS attack but it was just fine when i was consoled into the PIX....
Could it be those Chinese hackers that are active nowadays ? lolz ...
0
 
LVL 23

Accepted Solution

by:
debuggerau earned 500 total points
ID: 24083093
I doubt it would have been, but the amount of 'noise' out there could have exposed you to an unknown bug which stopped the ports..

No one was doing a ARP scan on your network?
Some switches only support a maximum of 3 MACS per port, or similar, and they can go off if there is an ARP scan..

Do you have ARP proxy set?

No one provided a loop-back cable, where none was needed? That could have frozen the port from the spanning tree protocol on the switch..

Running out of suggestions, and since the moment has passed, I suppose we will never know for certain, unless you setup your syslog, SMNP and monitoring software..






0

Featured Post

Get Actionable Data from Your Monitoring Solution

Your communication platform is only as good as the relevance of the information you send. Ensure your alerts get to the right people every time with actionable responses. Create escalation rules that ensure everyone follows the process and nothing is left to chance.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I recently attended Cisco Live! in Las Vegas, a conference that boasted over 28,000 techies in attendance, and a week of hands-on learning hosted by a solid partner with which Concerto goes to market.  Every year, Cisco displays cutting-edge technol…
On Feb. 28, Amazon’s Simple Storage Service (S3) went down after an employee issued the wrong command during a debugging exercise. Among those affected were big names like Netflix, Spotify and Expedia.
As a trusted technology advisor to your customers you are likely getting the daily question of, ‘should I put this in the cloud?’ As customer demands for cloud services increases, companies will see a shift from traditional buying patterns to new…
Both in life and business – not all partnerships are created equal. Spend 30 short minutes with us to learn:   • Key questions to ask when considering a partnership to accelerate your business into the cloud • Pitfalls and mistakes other partners…

690 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question