If physical access to the device is restricted, it may not matter so much if you leave Telnet on over the console port, but if you wish to disable Telnet via console as well: line con 0ĭefault SSH authentication timeout (time you have to enter correct user credentials after making the initial connection) is set to 120 seconds. This only allows SSH connections via the network to your Cisco device. The hacker can then parse them for sensitive data like passwords. Therefore, someone will be able to capture packets on your network, such as the commands you send to the switch or router. In some environments, it may not matter (such as a completely isolated lab for studying or testing your configs), but in others, it will open you up to malicious hackers since information is sent over Telnet as plain text.
Username john password 0 cat12345 Security considerationsīy default, both SSH and Telnet connections are allowed to Cisco devices. If you store your password in plaintext, it is quite easy to reveal it if you let someone at the console, or for someone reading your NVRAM: However, secret stores the password as a hash, instead of showing it in plaintext. Here our Router interface ip is 10.0.0.1.
To do this, we will open the command line on the PC and connect to the router with the below command. Secret and password can be used to set a password for user john. At the last step of Configuring SSH, SSH Config Example, we can try to connect via SSH from PC to the router. If you have not yet configured a user, you should do so now (choose one): user john password cat12345 Generate your RSA key: crypto key generate rsa User credentials Then, allow users configured on the switch to login with SSH or Telnet connections: aaa new-model Routershow running-config ssh Wed Sep 1 22:15:05.448 UTC ssh server logging ssh server session-limit 80 ssh server v2 ssh server vrf default ssh server netconf vrf default In addition, you see the modifications that are made by the script to the target buffer. To do the latter, your router or switch needs to be configured with a hostname, and a domain name: conf t To enable SSH on a Cisco iOS device, you need two things: specify a management interface (see this guide), and actually enable SSH. Where cat12345 is the password you wish to set for the user john. GENERAL INFORMATION SIMPLWINDOWS NAME: Cisco SX80 v2.3 CATEGORY: Conferencing VERSION: 2.3 SUMMARY: This module will control the Cisco SX80 video codec via RS232 or SSH. If you have not yet set up user credentials, or want to add a new user: conf t Partner: Cisco Model: SX80 Device Type: Video Conference. Configure SSH input on Cisco switches and routers