Sunday, October 14, 2012

IOS IPS

You can enable IPS on your IOS routers. I seem to remember this being covered by the R&S blueprint, although it was on the outer fringes of what you should expect to know for R&S. This time around, there is probably a fair shot of seeing it on the Security lab.


  • Basic Setup
    • ip ips config location flash:/ips/
    • ip ips name IPS
    • ip ips notify log
    • ip ips signature-category
      • category all
        • retired true
      • category ios_ips basic
        • retired flase
    • interface Fa0/0
      • ip ips IPS in
  • You then need to download the signature definition file. Would you actually need to do this in the lab?
    • Store the signing key from Cisco in routers NVRAM.
    • Load signature definition file. If you dont have much of the signatures retired, this process could drain your router of memory.
      • copy flash:/IOS-S347-CLI.pkg idconf
    • Enable the necessary signatures.
      • ip ips signature-definition
        • signature 2000 0
        • status
          • retired false
          • exit
        • exit
        • signature 2004 0
        • status
          • retired false
          • exit
    • You may need to change the target value rating
      • ip ips event-action-rules
        • target-value mission-critical target-address 183.1.46.0/24
        • exit
  • Validate with 'shop ip ips all'
  • Show signatures with 'show ip ips signatures sigid 2000 subid 0'
  • Show target value rating
    • 'show ip ips event-action-rules target-value rating'
This covers just the basic setup. I will be looking IOS IPS in the configuration guide and posting more information later.

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