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use of ssh/tcp wrappers

 
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ajin
Frequent Advisor

use of ssh/tcp wrappers

Dear Sir's

what is use of ssh/tcp wrappers ?
what is its use,give some basic idea.

Thanks & regards
Ajin.S
3 REPLIES
Avinash20
Honored Contributor

Re: use of ssh/tcp wrappers

TCP Wrapper:
http://software.hp.com/portal/swdepot/displayProductInfo.do?productNumber=TCPWRAP

SSH:
http://h20392.www2.hp.com/portal/swdepot/displayProductInfo.do?productNumber=T1471AA

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"Light travels faster than sound. That's why some people appear bright until you hear them speak."
Johnson Punniyalingam
Honored Contributor
Solution

Re: use of ssh/tcp wrappers

Hi Ajin,

what is use of ssh/tcp wrappers ?

SSH => ssh (SSH client) is a program for logging into a remote machine and for
executing commands on a remote machine. It is intended to replace rlogin
and rsh, and provide secure encrypted communications between two untrust-
ed hosts over an insecure network. X11 connections and arbitrary TCP
ports can also be forwarded over the secure channel.

ssh connects and logs into the specified hostname (with optional user
name). The user must prove his/her identity to the remote machine using
one of several methods depending on the protocol version used (see be-
low).

If command is specified, it is executed on the remote host instead of a
login shell.

tcp wrappers
============
Used as addon wrappers,for tcp

Example:-
telnet.allow file
telnet .deny File
(all the above mentioned files called tcp wrappers)

Hops this gives some basic idea,

Thanks,
Johnson
Problems are common to all, but attitude makes the difference
Emil Velez
Honored Contributor

Re: use of ssh/tcp wrappers

You probably do not need tcp wrappers with SSH.

the purpose of TCP wrappers is to add additional configuration and validation to TCP based services like ftp, telnet, rlogin, data protector, and other things that start from /etc/inetd.conf

SSH already has a configuraiton file where you can limit its communication by host, range of ips and username so it is not necessary. TCP wrapper adds that function to the inet services which do not normally have that level of configuration detail.