Author: Chris

Tweet 1. New IOS source port 0/22 destinaiton port 0/21 Switch#config terminal Enter configuration commands, one per line. End with CNTL/Z. Switch(config)#monitor session 1 source…

Sometimes, we are feeling slow Internet connection, but don’t know how we can measure the speed and what is right speed, download speed, TCP throughput,…

Tweet 1. Largest Weight – Cisco proprietary. Only valid on the router it is configured on. It is not passed to other routers. 2. Highest…

Tweet A link-local IPv6 address is begging with the bit pattern 1111 1110 1000 0000 or FE80::10. Link-local means packets sourced from or destined to…

Tweet Here is default  login passwords of the most Enterasys Switches. A-Series, B-Series and C-Series Enterasys Switches. User : admin Password : [empty] Try below…

I saw there are some sites on internet selling IP address databases. I thought those information would be free, if you know some commands. “Whois”…

Once in a while, I see "IP helper-address" command for broadcast applications such as DHCP client(BOOTP), NetBIOS and so on. As you know IP helper-address…

The collection of free AntiSpam tools and software for network administrator or network consultant. It is almost commercial grade product. i Spamihilator Spamihilator is an…

When you are transferring multiple files to your destination, ‘mput’ or ‘mget’ will be the one command used. Well, if we don’t have ftp application…

Tweet Cisco Command-line Editing Keys Guide   Keys                 Commands. Ctrl + a             Returns the cursor to the beginning of the current line. Ctrl +…

Tweet Just follow below commans   Edit file at /etc/sysconfig/i18n and add LANG="ko_KR.eucKR" on it. Execute the below; ]$ source /etc/sysconfig/i18n

Tweet SSLexplorer is one of awesome VPN software that is even opensource. For most of users who don’t want to spend extra money for security….