cant static nat port 544 to any inside port

[n.bokhar1]

hi 

i want to use port 544 in static nat but the router tells me it is using this port witch i haven't configured how can i close it

my command is :

ip nat inside source static tcp 10.1.1.2 554 int gig 0/0/1 554

what am i doing wrong?

my router is isr4331

and i have ipbase license

[Flavio Miranda]

Hi @n.bokhar1

Dont use port bellow 1024 for that. This port 544 is registered as being used by Kerberos services and is part of well-known ports.

 Try any port above 1024 and you should be good to go.

-If I helped you somehow, please, rate it as useful.-

[Georg Pauwen]

Hello,

what else do you have configured ? Post the full config...

Does interface GigabitEthernet0/0/1 have a static IP address ? If so, change your static NAT entry to:

ip nat inside source static tcp 10.1.1.2 554 x.x.x.x 554 extendable

Also, which IOS version are you running ?

By the way, is it 554 or 544 ? Your post states both (554 being RSTP and 544 Kerberos as mentioned by Flavio)...

[n.bokhar1]

sorry it's 554