User`s guide

Description
This command disables or enables the GPIB, USB, or LAN remote interface.
In addition, this command disables or enables the available remote services
such as Sockets, Telnet, VXI11, and the 34410A/11A/L4411A's built-in Web
Interface.
When you disable, or re-enable, an interface (GPIB, USB, or LAN),
you must cycle power on the instrument to activate the new
setting. This is also true when you disable or re-enable any LAN
service.