Configuring the SSH Connection Limit
admin@XorPlus# set system services ssh protocol-version v2 admin@XorPlus# set system services ssh connection-limit 5 admin@XorPlus# commit Waiting for merging configuration. Commit OK. Save done. admin@XorPlus#
Enabling and Disabling Inband Service
By default, SSH with inband interfaces are disabled. You can enable inband services by entering the command below.
- Set the L3 VLAN interface VLAN400 in the default VRF as the in-band management port.
admin@Xorplus# set system inband vlan-interface VLAN400 admin@Xorplus# commit
- Set the loopback interface IP in the default VRF as the in-band management IP.
admin@Xorplus# set system inband loopback 192.168.10.1 admin@Xorplus# commit
- Set the routed interface rif-ge3 in the default VRF as the in-band management port.
admin@Xorplus# set system inband routed-interface rif-ge3 admin@Xorplus# commit
Configuring the Idle Timeout for SSH User
admin@Xorplus# set system services ssh idle-timeout 60 admin@XorPlus# commit Waiting for merging configuration. Commit OK. Save done. admin@XorPlus#
Configuring the Port Number of the SSH server
Users can use this command to configure the new port number of SSH server to prevent attackers from accessing the standard port of SSH service and ensure security. The default listening port number of the SSH server is 22.
Note that, if the modified port number is not 22, the client needs to specify port number when logging in using SSH.
admin@Xorplus# set system services ssh port 30 admin@Xorplus# commit
Enabling Telnet Server Function
The following command enables telnet server function.
NOTEs:
- Telnet service is insecure. Do not enable a telnet server if you don't know what exactly it may mean.
- Limit to a maximum of 20 connections within 10 seconds.
- Terminate the session in 60 seconds if the connection is not successful.
admin@PICOS# set system services telnet disable false admin@PICOS# commit