VMware Telnet Extension Option

lists the commands that establish the VMware telnet extension communication between a virtual machine and a proxy. The virtual machine initiates the connection by sending a WILL VMWARE-TELNET-EXT message. If the proxy accepts by responding with a DO VMWARE-TELNET-EXT message, the virtual machine and the proxy can continue negotiation.

Table 1.
Command	Codes
WILL VMWARE-TELNET-EXT A virtual machine request indicating that it is willing to send VMware telnet extension messages to the proxy.  IAC WILL VMWARE-TELNET-EXT 255 251 232	251 232
WON’T VMWARE-TELNET-EXT A virtual machine notification that it is unwilling to send VMware telnet extension messages to the proxy. The virtual machine can use this command to turn off the extension option. To resume message exchange, the virtual machine and proxy must negotiate to turn on the option again (WILL VMWARE-TELNET-EXT and DO VMWARE-TELNET-EXT).  IAC WON’T VMWARE-TELNET-EXT 255 252 232	252 232
DO VMWARE-TELNET-EXT A proxy response that indicates it is willing to receive VMware telnet extension messages from the virtual machine. IAC DO VMWARE-TELNET-EXT 255 253 232	253 232
DON’T VMWARE-TELNET-EXT A proxy response that indicates it is unwilling to receive VMware telnet extension messages. The proxy can send this message at any time to stop remote serial port communication. To resume message exchange, the virtual machine and proxy must negotiate to turn on the option again (WILL VMWARE-TELNET-EXT and DO VMWARE-TELNET-EXT). IAC DON’T VMWARE-TELNET-EXT 255 254 232	254 232