There is a nice little trick or tool in Cisco that we can use when we troubleshoot network problems. It is very simple and useful:)
Sometimes I need to configure a test Windows virtual machine and use it for only for a week or two. Well if you are using a Microsoft Windows Server 2008 R2 OS like me and you have only 3 days till activation then continue in reading this post:)
After the connection between two switches could not be established I went to see the log of the uplink switch and the first thing I have noticed was this: %LINK-3-UPDOWN: Interface FastEthernet0/1, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up %SPANTREE-7-RECV_1Q_NON_TRUNK: Received 802.1Q BPDU on non trunk FastEthernet0/1 VLAN300. […]
After moving your DHCP server and it doesn’t receive client requests but everything is “OK” with the server, then that could cause a problem in your corporate environment:)
I wanted to use in my test environment an NTP server on Microsoft Windows Server 2008 R2 that would function as a syncing point for my Cisco routers and switches. The starting issue is that Cisco devices will not sync with Windows integrated NTP server and the reason is that Windows use SNTP as network […]
Here are a few notes how to successfully simulate an IPS 6 instance in GNS3. Version 7 is a little tricky to simulate so I suggest you get the IPS Manager Express and practice everything in the demo that is available when you install it.
Although this procedure is written in the official Cisco documentation, I will give you my understanding (example) of it. Command syntax is the only part where I have encountered some problems (errors).
Here I want to share a script that my friend selflessly shared with me:)
In the installation process of Windows Server 2012 you are given a choice would you like to install the Server Core Installation or the Server with the GUI. A great feature is that we are given a possibility to revert back and forth between a GUI and the non GUI… We have […]
It has been a few months since my last blog post and reason for that is the lack of time and of course – my laziness:) Here we will talk about an interesting Mozilla Firefox Add-on and the whole concept around the X-Forwarded-For header.