Whether a user can change the user name and password after L2TP over IPSec dialup on the USG2160

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To change the user name and password, log in as the administrator.

Other related questions:
Will the login user name and password be changed after the IVS C30 client is uninstalled?
The IVS C30 user name and password are stored on the server. After the client is installed from the local PC, the login user name and password are not changed. Note: C30 has reached EOS. No technical service will be provided for C30.

A user successfully initiates L2TP dialup, but cannot access the private network. Why?
A user successfully initiates L2TP dialup, but cannot access the private network. The possible causes are as follows: - The firewall is enabled on the intranet host. - The local and remote devices are on the same network segment. - The access address through L2TP dialup and LAN users are on the same network segment, and proxy ARP is not enabled. - The MTU on the virtual interface is incorrect. It is recommended that the MTU of the virtual interface plus all the header lengths should not exceed the MTU of the interface. Otherwise, packets will be discarded if some devices do not support fragmentation. - The MSS on the virtual interface is incorrect. Ensure that the MSS plus all the header lengths does not exceed the MTU. - LCP re-negotiation is not configured. - There are unreachable routes. - Tunnel authentication is not configured. - IPSec encryption is not configured and data flows do not match ACLs.

Administrator user name and password change for the USG2000&5000 series
For firewalls, once an administrator account is created, the user name cannot be changed. You can change the administrator password on the web UI: 1. Choose System > Administrators > Administrators. 2. Click the Edit icon on the line of the administrator and change the password in the displayed dialog box. In addition, you can run the current-user password-modify command to change the password of the current administrator.

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