Dell PowerConnect B-RX BigIron RX Series Configuration Guide v02.7.03 - Page 985

Displaying SSH connection information 30 Filtering SSH access using ACLs You can permit or deny SSH access to the device using ACLs. To use ACLs, first create the ACLs you want to use. You can specify a numbered standard IPv4 ACL, a named standard IPv4 ACL. Then enter the following command. BigIron RX(config)# access-list 10 permit host 192.168.144.241 BigIron RX(config)# access-list 10 deny host 192.168.144.242 log BigIron RX(config)# access-list 10 permit host 192.168.144.243 BigIron RX(config)# access-list 10 deny any BigIron RX(config)# ssh access-group 10 Syntax: ssh access-group < standard-named-acl> | < standard-numbered-acl> Refer to the section Chapter 21, "Access Control List" for details on how to configure ACLs. Disabling 3-DES By default, both 3-DES and AES encryption algorithms are enabled on the BigIron RX device. You can disable 3-DES by entering the following command. BigIron RX(config)# ip ssh encryption aes-only Syntax: [no] ip ssh encryption aes-only Displaying SSH connection information Up to five SSH connections can be active on the device. To display information about SSH connections, enter the following command. BigIron RX# show ip ssh Connection Version Encryption 1 SSH-2 3des-cbc 2 SSH-2 aes128-cbc 3 SSH-2 aes192-cbc 4 SSH-2 aes256-cbc 5 SSH-2 3des-cbc Username Hanuma Mikaila Jenny Mariah Logan Syntax: show ip ssh [| begin < expression> | exclude < expression> | include < expression>] This display shows the following information about the active SSH connections. TABLE 144 SSH connection information This field... Displays... Connection Version Encryption Username The SSH connection ID. This can be from 1 - 5. The SSH version number. This should always be 1.5. The encryption method used for the connection. The user name for the connection. The show who command also displays information about SSH connections. For example. BigIron RX Series Configuration Guide 913 53-1001986-01