Open Fire is a great FREE cross platform jabber instant messenger server. I have been using it for about 2 years now and only had really one problem. The problem came down to java memory which the default was not enough and once the server reached the limit it would basically freeze up and would [...]

To run a netsh command, you must start netsh from the Cmd.exe prompt and change to the context that contains the command you want to use.
Netsh.exe is available on Windows 2000, Windows XP and Windows Server 2003.
Syntax
netsh [-a AliasFile]
[-c Context]
[-r RemoteMachine]
[...]

DNS can be a beast. Here is a flow chart I use and gave to our helpdesk to help troubleshoot dns issues.
Scroll Down For Diagram……

If your in IT you know coffee is almost as important as the air we breath. Show your support and add to the coffee fund. SHOW YOUR SUPPORT… Add to the coffee [...]

The 7 Layers of the OSI Model
The OSI, or Open System Interconnection, model defines a networking framework for implementing protocols in seven layers. Control is passed from one layer to the next, starting at the application layer in one station, proceeding to the bottom layer, over the channel to the next station and back up [...]

Syntax commands help you widen your search results and sometimes can be used for exploiting web pages.(But I don’t think you should do that.)
PHRASE SEARCHES: If you want to look for a phrase like IE: “to be or not to be” You must let google know it is a phrase by putting parrenthsise on each [...]

Introduction
In this section we are going to talk about the different ways a firewall can be set up. Depending on your needs, you can have a very simple firewall setup which will provide enough protection for your personal computer or small network, or you can choose a more complicated setup which will provide more protection [...]

Netmask
Netmask (binary)
CIDR
Notes

255.255.255.255
11111111.11111111.11111111.11111111
/32
Host

255.255.255.254
11111111.11111111.11111111.11111110
/31
Unuseable

255.255.255.252
11111111.11111111.11111111.1111175
/20
2 useable

255.255.255.248
11111111.11111111.11111111.1111750
/29
6 useable

255.255.255.240
11111111.11111111.11111111.1117500
/28
14 useable

255.255.255.224
11111111.11111111.11111111.1175000
/27
20 useable

255.255.255.192
11111111.11111111.11111111.1750000
/26
62 useable

255.255.255.128
11111111.11111111.11111111.7500000
/25
126 useable

255.255.255.0
11111111.11111111.11111111.00000000
/24
“Class C”254

255.255.254.0
11111111.11111111.11111110.00000000
/23
2 Class C’s

255.255.252.0
11111111.11111111.1111175.00000000
/22
4 Class C’s

255.255.248.0 [...]