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Full Discussion: Restricting Telnet to IPs
Special Forums Cybersecurity Restricting Telnet to IPs Post 25875 by cerberusofhate on Wednesday 7th of August 2002 01:59:03 AM
Old 08-07-2002
they'res always the old and tired hosts.deny file, just add the following to it:
telnet: partialhost.domain.com, somedomain.com, somedude.com

but, you want to restric to where everyone *BUT* someone can get into telnet, then you should use the following rule in hosts.allow:
telnet: hostname.com
and then set hosts.deny to:
telnet: ALL

by the way, they are in the /etc directory.
cerberusofhate
 

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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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