Ftp, telnet etc. not operational? Post: 302069817

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Top Forums UNIX for Dummies Questions & Answers Ftp, telnet etc. not operational? Post 302069817 by RTM on Wednesday 29th of March 2006 10:07:15 AM

03-29-2006

Registered User

Your /etc/hosts.deny file should look like this (lines without # in front of them):
ALL:ALL

This sets it so everything is denied from everywhere.

Then, you set up your hosts.allow to allow only what you want.

ALL: 127.0.0.1

This would allow ftp, telnet, ssh, r* commands, etc... to localhost from localhost (localhost should be the system you are working on).

If you have another system (PC, UNIX, whatever) that you want to add to allow it to telent or ftp or ssh into this system, you have to add a line for it - by either putting in the IP or the IP range.

Let's say the other system has a IP of 192.168.0.100. and you want to ssh from it to the Linux system. On the Linux system, add the following to /etc/hosts.allow - this will allow ANY system within the IP range of 192.168.0.XXX to connect.

sshd: 192.168.0.

If you only want one IP to connect:

sshd: 192.168.0.100

These will allow ssh only - to have ftp or telnet, you would either change the sshd to ALL (NOT recommended) or add lines to specify each individual protocol you want to add. Suggest you start with one and add on as needed.

sshd: 192.168.0.100
in.ftpd: 192.168.0.100
in.telnetd: 192.168.0.100
in.rlogind: 192.168.0.100

RTM

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LEARN ABOUT OSF1

telnetrc

telnetrc(4)						     Kernel Interfaces Manual						       telnetrc(4)

NAME

       telnetrc, .telnetrc - Specifies setup commands for a telnet session

SYNOPSIS

       $HOME/.telnetrc

DESCRIPTION

       The .telnetrc file contains the setup information for a telnet session.	It is a hidden file in your home directory and must be readable by
       the user logging in.

       The file can consist of multiple entries for each remote host to which a user can connect.  A remote host entry consists of multiple lines.
       The first line is the name of a remote host. The subsequent lines must begin with blank spaces, and contain telnet subcommands.	These sub-
       commands are processed as though they were typed in manually. Lines beginning with a number sign (#) are comment lines.	See telnet(1)  for
       a complete list of telnet subcommands.

       To specify subcommands that apply to all systems, create an entry, using the word "DEFAULT" as the system name, and specify the telnet sub-
       commands in the subsequent lines.

EXAMPLES

       The following shows a sample .telnetrc file:

       # Beginning of telnetrc file # Default subcommands that apply to all systems DEFAULT
	  environ undefine USER # First system entry system1
	  set echo
	  toggle crlf # Second system entry system2
	  set echo
	  mode line
	  toggle crlf

FILES

       User-customized telnet startup values.

RELATED INFORMATION

       Commands:  telnet(1).  delim off

																       telnetrc(4)

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