Pro Hack - GNS 3 Tutorial – Basic Router password Configuration In This Issue... GNS 3 Tutorial – Basic Router password Configuration More Recent Articles Search Pro Hack Hi folks..I have started my first steps into Cisco, & would be sharing my small experiments in it. Actually , this time I am  covering the basics using GNS3 which is a powerful open source network simulator to simulate a simple topology of 2 routers with their basic configuration & commands. I assume you have worked with GNS3 or atleast know how to load IOS & make a simple topology.. So, firstly download GNS3 & install it. Get IOS images from and load them (if you are really not sure of this step, mail me, I will expand the basics more) The topology I created is this - 2 routers connected via gigabit . What we will be doing is - Set router password. Set telnet password Set Console Password Encrypt All passwords. Set Ip Address of routers. Anyways, I start by right clicking on R2 router. Connected to Dynamips VM "R2" (ID 7, type c7200) - Console port To get into privilege mode, type this command. R2>en To configure router, type this command .. R2#conf t Enter configuration commands, one per line.  End with CNTL/Z. To set router password & encrypt all passwords type these commands R2(config)#enable secret router2 R2(config)#service pass R2(config)#service password-encryption Now to set console & its password type these commands R2(config)#line console 0 R2(config-line)#password console R2(config-line)#login R2(config-line)#exit Now to set telnet (vty/virtual terminal) & its password type these commands R2(config)#line vty 0 4 R2(config-line)#password telnet R2(config-line)#login R2(config-line)#exit Once done, you can now configure the interface by typing these commands R2(config)#int g1/0 R2(config-if)#desc ROUTER LAN 2 GIGABIT INTERFACE R2(config-if)#ip address 192.168.1.20 255.255.255.0 R2(config-if)#no shut R2(config-if)# *Feb 19 19:56:42.035: %LINK-3-UPDOWN: Interface GigabitEthernet1/0, changed state to up R2(config-if)# *Feb 19 19:56:42.035: %ENTITY_ALARM-6-INFO: CLEAR INFO Gi1/0 Physical Port Administrative State Down *Feb 19 19:56:43.035: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0, changed state to up R2(config-if)   Technorati Profile Computer News -