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I scanned a router and found that the community string is public. The write access is also enabled. Now I want to change the configuration of the router. Can anybody tell me about tools and tutorials by which I can know how to change the configuration? Thanks in advance.

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please provide more information, such as the brand, model and firmware of your router. I'm also thinking this may be more on topic over on - as it isn't a security question - but either way: more info please! – Rory Alsop Dec 12 '11 at 22:55

Cisco SNMP Tool is a tool that allows you to:

  • Telnet to Host
  • Reboot device
  • Upload Running & Startup Configuration
  • Download Running & Startup Configuration
  • Reset Passwords
  • Write NVRAM

Just make sure you have permission before doing anything on the router.

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This is not working for me. May be because the router is not from Cisco. Any other option please. – narayan Dec 12 '11 at 1:37

SNMP uses "Set" and "Get" against MIB (Management Information Base) values to change and view information on managed devices.

If you get the MIB tree for the vendor of the router you are looking at and then use an SNMP tool along with the credentials you should be able to change the configuration of the MIB values supported.

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You need to provide us the manufacturer of the router before any specific help can be given.

The manufacturer's website should provide links and guides on how to do what you've asked.

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