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'.

05 July 2012

Can open some websites, but can not open some other websites

One of the Bell DNS servers have problems.

On our DNS server, choose e.g. NTS3850SERVER / Forwarders, right-click on Forwarders, then choose Properties. On the Forwarders tab, add another Bell DNS server IP address (a working one), and 'Up' it to the top, then we can open any website now.

04 July 2012

Can only see a part of all the workstations and servers on the network

Solution:
Open Symantec Endpoint Protection.
Network Threat Protection / Options / Change Settings.
Select 'Allow IP traffic'.