Showing posts with label Firewall. Show all posts
Showing posts with label Firewall. Show all posts

30 May 2016

Unable to launch ASDM?

'Unable to launch ASDM from 192.168.x.x:
java.security.cert.CertificateException: Certificates does not conform to algorithm constraints'

When you want to run ASDM and log on your CISCO firewall, you see the above error message?

Solution:

In your browser, go to -

https://192.168.x.x

you will be brought to the 'Cisco ASDM 5.2' page. You have 3 options, actually 2; the other - 'Run startup wizard applet' will walk you through the initial configuration, which is not what we want.

Choose Option 2 - 'Run ASDM Applet'.

If there are any problems with certificates, then do two things -

1. In your browser, add your firewall IP to Trusted sites;
2. Go to Control Panel | Java | Security tab, put your firewall IP to the 'Exception Site List'.

(End)

31 July 2012

How to find which machines occupying the most bandwidth in LAN?

Telnet to the firewall.
Log in.

Run the 'login' command.
>login
Password:

Run the following command -

#sh conn

Copy all the output to Notepad.
Open the txt file in Excel delimited by space.

Order them by 'Bytes'.

26 October 2010

What if VPN disconnects?

1. Open 'asdm-launcher.exe'.
2. Click on 'Configuration'.
3. Click on 'VPN'.
4.