How to change default TCP (ssh) port number 22 in cucm 11.5

[Balaji Ezhumalai]

Hello all,

I am using CUCM 11.5 and I want to change the default SSH port from 22 to another number as all the other servers in our organization have different ssh port numbers for security reasons.

How can I change the default ssh port number in CUCM?

I am using ESXI 6.5, and UCOS 6.0

Thanks in advance.

[Nithin Eluvathingal · Accepted solution]

AFAIK you cant change that. You need to use the port 22.

[Balaji Ezhumalai]

Usually, we can change the ssh port number in cisco routers and servers (linux, UNIX, windows etc..), likewise can we change in cucm?

I do not want to completely block ssh,

My task is to deny ssh access for cucm via port 22, instead, I would like to set a different port number for ssh and access it.

is there any other solution?

[Jaime Valencia · Accepted solution]

No, you cannot change it, CUCM uses a customized and closed OS and plenty of things you could do on a regular Linux server you cannot do here because there's no root access. 

[Balaji Ezhumalai]

Very clear Mr.Jaime Valencia, and thanks for the knowledge.

[Balaji Ezhumalai]

Thanks for your response Mr. Nithin, I got that.