Dell PowerEdge R830 Integrated Remote Access Controller 8 Version 2.70.70.70 U - Page 79
Configuring IP filtering using RACADM, Cipher suite selection
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To configure IP filtering: 1. In iDRAC Web interface, go to Overview > iDRAC Settings > Network > Network. The Network page is displayed. 2. Click Advanced Settings. The Network Security page is displayed. 3. Specify the IP filtering settings. For more information about the options, see iDRAC Online Help. 4. Click Apply to save the settings. Configuring IP filtering using RACADM You must have Configure privilege to perform these steps. To configure IP filtering, use the following RACADM objects in the iDRAC.IPBlocking group: • RangeEnable • RangeAddr • RangeMask The RangeMask property is applied to both the incoming IP address and to the 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: RangeMask & ( ^ RangeAddr) Examples for IP Filtering The following RACADM commands block all IP addresses except 192.168.0.57: 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: 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/idracmanuals. Cipher suite selection Cipher Suite Selection can be used to limit the ciphers in iDRAC or client communications and determine how secure the connection will be. It provides another level of filtering the effective in-use TLS Cipher Suite. These settings can be configured through iDRAC web interface, RACADM, and WSMan command line interfaces. Configuring cipher suite selection using iDRAC web interface CAUTION: Using OpenSSL Cipher Command to parse strings with invalid syntax may lead to unexpected errors. CAUTION: This is an advanced security option. Before you configure this option, ensure that you have thorough knowledge of the following: • The OpenSSL Cipher String Syntax and its use Configuring iDRAC 79
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