TFTP Service

[iceman6684]

All,

  i am trying to find a way to verify that the TFTP service is not running on the router.  i issued the no tftp-server flash: <ios> and it accepted it even though it does not show up in the show running config.   any docs would be helpful.                  

[John Blakley]

If you have the command, you can do:

sh control-plane host open-ports

HTH,

John

[iceman6684]

no i do not have that command available.  its a 3800 series router.

[iceman6684]

sh ip socket will show me the ports is listening on but, i was looking for a doc that states that by default the TFTP service is disabled and how to verify that it is not running.

[John Blakley · Accepted solution]

If the command isn't in the running config, it's disabled. The tftp server isn't turned on by default. There are version differences that seem to either support the

control-plane

command and those that don't. I have a 3845 that has it, but I have a 3825 that doesn't. Here's a 3745 that does that would show you the results should you decide to maybe update your router:

R1#sh control-plane host open-ports

Active internet connections (servers and established)

Prot        Local Address      Foreign Address                  Service    State

tcp                 *:23                  *:0                   Telnet   LISTEN

udp                 *:69                  *:0              TFTP-Server   LISTEN




R1#

HTH,

John

[iceman6684]

thanks