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Integrated Dell Remote Access Controller 8 (iDRAC8) Version 2.00.00.00 User's Guide

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Configuring IP Filtering Using RACADM

You must have Configure privilege to perform these steps.
To configure IP filtering, use the following RACADM objects:
  • With config command:
    • cfgRacTuneIpRangeEnable
    • cfgRacTuneIpRangeAddr
    • cfgRacTuneIpRangeMask
  • With set command, use the objects in the iDRAC.IPBlocking group:
    • RangeEnable
    • RangeAddr
    • RangeMask

The cfgRacTuneIpRangeMask or the RangeMask property is applied to both the incoming IP address and to the cfgRacTuneIpRangeAddr or RangeAddr property. If the results are identical, the incoming login request is allowed to access iDRAC. Logging in from IP addresses outside this range results in an error.

The login proceeds if the following expression equals zero:
  • Using legacy syntax: cfgRacTuneIpRangeMask & (<incoming-IP-address> ^ cfgRacTuneIpRangeAddr)
  • Using new syntax: RangeMask & (<incoming-IP-address> ^ RangeAddr)

where, & is the bitwise AND of the quantities and ^ is the bitwise exclusive-OR.

Examples for IP Filtering
  • The following RACADM commands block all IP addresses except 192.168.0.57:
    • Using config command: 
      racadm config -g cfgRacTuning -o cfgRacTuneIpRangeEnable 1
                                                racadm config -g cfgRacTuning -o cfgRacTuneIpRangeAddr 192.168.0.57
                                                racadm config -g cfgRacTuning -o cfgRacTuneIpRangeMask 255.255.255.255
    • Using set command: 
      racadm set iDRAC.IPBlocking.RangeEnable 1
                                                racadm set iDRAC.IPBlocking.RangeAddr 192.168.0.57
                                                racadm set iDRAC.IPBlocking.RangeMask 255.255.255.255
  • To restrict logins to a set of four adjacent IP addresses (for example, 192.168.0.212 through 192.168.0.215), select all but the lowest two bits in the mask:
    • Using set command: 
      racadm set iDRAC.IPBlocking.RangeEnable 1
                                                racadm set iDRAC.IPBlocking.RangeAddr 192.168.0.212
                                                racadm set iDRAC.IPBlocking.RangeMask 255.255.255.252

    The last byte of the range mask is set to 252, the decimal equivalent of 11111100b.

For more information, see the iDRAC RACADM Command Line Reference Guide available at dell.com/support/manuals.

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