Disabling the Telnet or SSH service on the USG2000&5000&6000

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USG2000&5000& Perform as follows to disable the Telnet or SSH service:
1.  Disable the Telnet service.
<USG> system-VIEW
Enter system view, return user view with Ctrl+Z.  
[USG]undo telnet  server  enable 

2.  Disable the SSH service.
system 
Enter system view, return user view with Ctrl+Z.  
[USG]undo stelnet server  enable

Other related questions:
Enabling or disabling the Telnet or SSH function on the USG2000&5000
Enable or disable the Telnet or SSH function on the USG2000&5000 as follows: 1. Run the following commands in the CLI to enable or disable the Telnet or SSH function: sy [USG5100]aaa [USG5100-aaa]local-user admin service-type ? dot1x 802.1X user ftp FTP user ppp Indicate PPP user ssh SSH user telnet Telnet user terminal Terminal user web Web authentication user [USG5100-aaa]local-user admin service-type ssh web telnet As shown in the preceding method, only the SSH, web, and Telnet services are enabled for the admin account. Services can be enabled as required.

Changing the Telnet/SSH login timeout period on the USG2000&5000&6000
Change the Telnet/SSH login timeout period on the USG2000&5000&6000 as follows: Set the login timeout period for the Telnet/SSH user. For example: Set the login timeout period for the Telnet user to 1 minute and 30 seconds. system-view [sysname] user-interface vty 0 4 [sysname-ui-vty0-4] idle-timeout 1 30

Configuring telneting to other devices on the USG2000&5000&6000
USG2000&5000&6000  configure telneting to other devices as follows:

To manage other intranet devices with the firewall as a springboard, perform as follows:

telnet 192.168.101.231 
14:33:04  2011/03/26 
Trying 192.168.101.231 ... 
Press CTRL+T to abort

In this way, you can perform operations on other devices.

Disabling the debugging function on the USG2000&5000&6000
The method of disabling the debugging function on the USG2000&5000&6000 is as follows: The common CLI operation method is as follows: undo terminal debugging Info: Current terminal debugging is off. However, after you enable the debugging function, the information output to the device may be of a large volume. Therefore, it is inconvenient for you to run the undo debugging all command on the device to stop the output of all debugging information. In this case, you can press Ctrl+O. The result is the same as running the undo debugging all command. Devices that support Ctrl+O include Windows HyperTerminal, Telnet program in the DOS CLI environment, SecureCRT, and IPOP V2.3 or later versions. VTP does not support this operation. In VTP, Ctrl+O is defined as the shortcut keys for creating a console.

Whether the USG2000&5000&6000 support specifying source addresses for Telnet
The USG2000&5000&6000 series does not support specifying source addresses during telnet to other device. The local address for telneting to other devices is the IP address of the outbound interface to the destination address.

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