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  • How to Add a Banner in Cisco IOS Routers and Switches

    Banners are one of the important things for any device that allows remote access either for administration or for user access. They serve their purpose of warning any unauthorised users and make them aware that the device or the server is protected and being monitored and also provide a quick snapshot of what the system is and what is it used for. For example, we use banners for security warning and the device details and the service/application related to it.

    Adding a Banner to Cisco Router or a Catalyst switch running Cisco IOS is all a matter of one simple command.

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  • How to run remote commands on Cisco Routers and Switches using RSH

    If you are already a UNIX or LINUX administrator, you by now know what is rsh and how it can be used to run commands on a remote server. This is no different to running commands on a Cisco Routers and Switches.

    You can run commands on your cisco routers and switches remotely from linux or unix servers and infact Windows XP, Windows 2003, Windows Vista systems.

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  • How to backup and restore Cisco Routers switches using a FTP Server

    I just wrote about backup and restore of Cisco Router and Switches using a TFTP Server & HyperTerminal Emulator program. Let's now backup Cisco Switches and Routers using a FTP Server.

    To backup a Cisco Router or Switch to a FTP server, the FTP server should be reacheable from the router or switch.

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  • How to Backup & Restore config in Cisco routers and switches using Hyperterminal

    The easiest method to backup Cisco routers and Switches would be when you are logged onto it using a tool like HyperTerminal either via telnet,ssh or via console.

    For information on how to backup config on a cisco router or a switch using TFTP click here

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  • How to Backup & Restore config in Cisco routers and switches using TFTP

    It is always important that a copy of the config is saved elsewhere on a server to facilitate a speedy recovery should there be a catastrophy. While Cisco Routers and Switches can recover from a crash as long as the running-config is copied to the startup config. There is every reason for it to fail as it did on one of my Catalyst 3750s.

    There is a lot of automated config backup solutions available for free/opensource. Its worth knowing a manual backup procedure as well.

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  • RANCID – Network Device Config Differ,Config Change alert,backup

    RANCID is Really Awesome New Cisco Config Differ. AS its name implies, RANCID monitors network device configuration, including software and hardware and uses CVS (Concurrent Version System) or Subversion to maintain history of changes. RANCID is simple and is easy to use.

    The same very functionality of RANCID can be used as a backup system for Network device config backup system or even a config change alert system as it can email changes from previous saved configurations. All this RANCID does by logging on to a network device using Telnet or SSH and runs various show commands to grab config changes (hardware & Software), send alert emails of any changes, format the info and commit to the CVS system.

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  • Secure yourself from Phishing attacks with NetCraft Toolbar

    Phishers send well crafted emails as if coming from a valid source like your bank tricking you to enter your bank account or any portal (like eBay or Paypal) details including login and password or PIN numbers . Once, you enter the details, they are sent to remote servers. Now, that’s more than anything for the hackers to loot money out of your account.

    Taking security seriously, we will discuss the community aided Netcraft tool bar for Internet Explorer & Firefox. First of all, I have to applaud NetCraft toolbar as by far the best toolbar that you can get for free. When I tested a new eBay scam email URL, no other toolbar other than NetCraft can catch the Phishing URL.

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