Restrict jabber user to login from corresponding ip

Hello Support,

I have installed jabber in my server. Currently all my users can login from any ip. So I need to restrict some users logins from a corresponding ip only.

For example: user1, user2,user3 and user4 are the users.

user1 and user2 can login from any ip

user3 and user4 can login only from 192.3168.1.105.

I need to impliment it in internet. Please help me on this. Any help is much appriciated