Dell MX5108n OS10 Enterprise Edition User Guide for PowerEdge MX IO Modules Re - Page 477

number of max-auth-tries is reduced by one. In this case, if you configured ip ssh server max-auth-tries 1, the password prompt does not display. Virtual terminal line Virtual terminal line (VTY) is used to control Telnet or SSH connections to the switch. You can enter the VTY mode by using the line vty command in the CONFIGURATION mode. OS10(config)# line vty OS10(config-line-vty)# Control access to VTY You can control the Telnet or SSH connections to the switch by applying access lists on VTY lines. Create IP or IPv6 access lists with permit or deny filters. Enter the VTY mode by using the line vty command in the CONFIGURATION mode. Apply the access lists to the VTY line with the {ip | ipv6} access-class access-list-name command. Example OS10(config)# ip access-list permit10 OS10(config-ipv4-acl)# permit ip 172.16.0.0 255.255.0.0 any OS10(config-ipv4-acl)# exit OS10(config)# line vty OS10(config-line-vty)# ip access-class permit10 OS10(config-line-vty)# View VTY ACL configuration OS10(config-line-vty)# show configuration ! line vty ip access-class permit10 ipv6 access-class deny10 OS10(config-line-vty)# Enable login statistics To monitor system security, allow users to view their own login statistics when they sign in to the system. A large number of login failures or an unusual login location may indicate a system hacker. Enable the display of login information after a user successfully logs in; for example: OS10 login: admin Password: Last login: Thu Nov 2 16:02:44 UTC 2017 on ttyS1 Linux OS10 3.16.43 #2 SMP Debian 3.16.43-2+deb8u5 x86_64 ... Time-frame for statistics : 25 days Role changed since last login : false Failures since last login : 0 Failures in time period : 1 Successes in time period : 14 OS10# This feature is available only for the sysadmin and secadmin roles. • Enable the display of login information in CONFIGURATION mode. login-statistics enable System management 477