How To Check Which Port Is Listern or Open on Linux

Friday, September 12th, 2008

For some security reason you may configure SSH or any other protocol using different kind of port number on Linux server. Sometimes it’s important to know which ports are actually listern or open to the system network, it may open for network instruction or hacking.
Basically there are few methods to see which ports are [...]

ESX Host Currently Has No Management Network Redundancy Error

Thursday, January 3rd, 2008

After upgraded to virtual center version 2.5 recently, I found an error message "host ESXhostname currently has no management network redundancy"  when I tried to create a new cluster with 2 ESX hosts.
My test setup has one service console & one VMkernel connected to vswitch0 with single network card for both ESX host. The funny [...]

Server/Network Uptime statistic

Thursday, November 1st, 2007

I believe when you searching or looking for any web [tag]hosting[/tag] company or packages, you must look at their services, support, features, server/network uptime and etc.
So do you have any idea how is the [tag]server[/tag]/network uptime statistics counting nines?

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OpenSUSE Linux Bridging Network

Wednesday, January 17th, 2007

I had a OpenSUSE Linux 10.2 network bridge setup with 2 network card(eth0 & eth1) recently.
Below is the automated script that I use to start my network bridging services:
#!/bin/bash
PATH=”/sbin:/usr/sbin:/usr/local/sbin”;
slaveIfs=”1 2 3 4 6 7 8 9 10″;
cmd=”$1″;
[ -z "$cmd" ] && cmd=”start”;
case “$cmd” in
start)
brctl addbr br0;
[...]