Posts Tagged ‘Windows’

Providing you’re either: 1. Using a hostname of the device or 2. You’re positive it will receive the same IP, if you’re using an IP address to connect to your machine using RDP that obtains its IP parameters using DHCP:

ipconfig /release && ipconfig /renew

As simple as that. In fact, you can use the same operation “&&” on a Linux box with a BASH shell using whatever interface configuration commands you’re using, if you don’t have a script which already does it for you.


I get this a lot in my field “I cannot ping the server, it must be down or a network issue”; however, I can log in and telnet to the machine and even RDP/SSH into the machine. Why is this? Simple, the machine is not responding to ICMP ECHO REQUESTS which is default behavior for some systems. Windows 7 and Windows server 2008 DO NOT respond to ping by default because their internal firewalls are set to NOT respond to ICMP ECHO REQUESTS. Therefore, the machine could show as DOWN because it doesn’t respond to ping but the machine could actually be alive and on the network.

I personally recommend allowing your machines to respond to ping because there are no benefits to not allowing it other than confusion that could arise from the unexpected. Hiding a PING response doesn’t provide more security because a TCP SYN scan could prove that your machine is alive and well if there are listening ports, among other methods of host discovery.

To put it simple, DO NOT RELY ON PING as a method of testing connectivity only.


Just though I would put this out there for the world to read…use new network cables! If the cable doesn’t have a locking clasp you’re begging to have someone just brush by and jiggle it loose and then you’re troubleshooting an issue that looks complex when in reality all you have to is plug in a cable! ALWAYS USE NEW CABLES


We see it all the time here in the IT field…people floating around aimlessly during a maintenance doing nothing while others seem to be working harder than others. Why is this? For the most part I don’t believe we should be blaming them directly; rather, I think we need to blame management for not delegating responsibilities properly and efficiently… Read the rest of this entry »


So there is the long standing debate of GUI Vs CLI in both the server and Networking world. There are quite a few angles to argue and I know that in this one single post I am not going to cover 100% of them and I am going to keep emotion out of this and stick to the facts and try to do a “Qualitative review of the two Read the rest of this entry »


http://blogs.technet.com/b/teamdhcp/archive/2009/02/26/new-features-in-dhcp-for-windows-server-2008-r2-windows-7.aspx

This is supposed to “speed up” wireless client access to a network. WINDOWS DHCP FAIL! What this seems to cause is a massive headache for network and system administrators. Windows clients can forever store and cache the information from an associated SSID. Lets say a laptop hasn’t been on your network for 6 months and you just so happens you have a reservation of some sorts on the network or you changed the scope range, the wireless client will send along a DHCP proposal to get the same address it had that first time it was on there. This, as you can see, will cause headaches for you. Microsoft wants you to believe this “saves time” but in reality just how fast is the DORA process for DHCP? Typically so fast most people don’t care. Here is how you turn off Windows DHCP Network Hints:

http://blogs.technet.com/b/teamdhcp/archive/2008/12/19/how-to-configure-dhcp-network-hint.aspx