Networking

How to Fix “You do not have permission to send to this recipient”

by File in: Networking

A while ago I setup Exchange Server on a virtual machine to play around with it and see if I could get a proper mail server working. I thought I did pretty well because I was able to send and receive messages internally on the network and was able to send emails out to the […]

How to Determine Open and Blocked TCP/UDP Ports

by File in: Networking

Looking for a way to determine which ports are open and which ports are blocked on a computer? Ports are basically logical connections between two computers or network devices for sharing data. Port numbers range from 1 to 65536 and some port numbers are assigned to specific tasks, such as port 80 for transferring HTTP […]

Accessing Local Files and Folders on Remote Desktop Session

by File in: Networking

If you use remote desktop often to work on your network, you probably have noticed that when working remotely, local files and directories on your computer are not accessible on the terminal server session. You end up e-mailing files you are working on the remote server to your local computer. That is a painstaking task, […]

Change IP Address and DNS Servers using the Command Prompt

by File in: Networking

Changing the TCP/IP settings via the GUI interface is very easy and simple. But what about if you want to have more fun doing it and change the IP and DNS properties using the Windows command prompt instead? If you are a Linux guru or a batch scripting wizard, this should not be complicated. If […]

Windows TCP/IP Utilities – Netstat, Tracert, IPconfig, NSlookup

by File in: Networking

netstat: is a utility to display TCP/IP statistics and details about TCP/IP components and connections to a host. Netstat is useful to check what ports are open on your computer, to see which network connections are currently established, to see how many packets have been handled by a network interface since it was activated, etc. […]