This is a simple bash script to check whether NIC is dropping packets or not. It works with only one NIC card at one time because there’s possiblity that packet can go through another NIC. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 [...]

If you are going to run virtualized host as a web server or some services for the clients, the systems should be accessible from the outside. Unfortunately, the default network configuration in KVM is NAT (Network Address Translation). It is good for some VMs who will co-work with other VMs, but for the server, it [...]

To test some problems usually I have to have two machines which is not easy to have. Especially if I have to configure it for each version, RHEL4, RHEL5, Fedora, etc. Virtualzation comes here to solve those kinds of difficulty. But, just installing new operating system each time is also not a perfect solution. You [...]