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Denying telnet session to certain Clients

 
siddharthC
Occasional Advisor

Denying telnet session to certain Clients

Hi,

I want to deny telnet seesion to certain cleint and allow to certaiin. Pls. help me how to achive this.

Regards,
Siddharth
7 REPLIES 7
Jaime Bolanos Rojas.
Honored Contributor

Re: Denying telnet session to certain Clients

SiddharthC,

I think it's a lot better if you go with SSH instead of telnet, as is more secure and it give you more flexibility to manage these things.

If you persist on using telnet ( which is not recommended now days ) then check this thread that it will point you in the right direction,

http://forums1.itrc.hp.com/service/forums/bizsupport/questionanswer.do?threadId=961308

Regards,

Jaime.
Work hard when the need comes out.
Bill Hassell
Honored Contributor

Re: Denying telnet session to certain Clients

If by the term 'client' you mean a specific computer's IP address, the file is called /var/adm/inetd.sec where you specify deny/allow for specific addresses of address ranges. If you mean a specific user, there is no way to identify a user until after login is complete and /etc/profile is started. So you would test for the user in that file and exit if the user is not allowed.


Bill Hassell, sysadmin
siddharthC
Occasional Advisor

Re: Denying telnet session to certain Clients

There is no file by the name /var/adm/inetd.sec in my system
spex
Honored Contributor

Re: Denying telnet session to certain Clients

Hi Siddharth,

Create this file and add "telnet deny " to it. Optionally, you could put "telnet allow " and then "telnet deny *" to allow only certain hosts and deny all others. 'inetd -c' to restart the dameon and apply changes.

# man inted.sec
for more information.

PCS
Bill Hassell
Honored Contributor

Re: Denying telnet session to certain Clients

You create the file as needed. Use the command man inetd.sec for details.


Bill Hassell, sysadmin
HGN
Honored Contributor

Re: Denying telnet session to certain Clients

Hi

Please asign points to the posts, people are spending their valuable time helping you.
0 out of 16

Rgds

HGN
HGN
Honored Contributor

Re: Denying telnet session to certain Clients

Hi

Please assign points to the posts, people are spending their valuable time helping you.
0 out of 16

Rgds

HGN