Sponsored Content
Operating Systems AIX disabling telnet login for root only Post 302227166 by bakunin on Wednesday 20th of August 2008 05:33:32 PM
Old 08-20-2008
Do you want to disable the telnet login only or remote login in general? If the latter is the case use the "chuser" command to revoke the "rlogin" right for root You can also revoke the "login" right to disable root login via a console. See the manpage for "chuser" for the details. Revoking both rights will still retain the possiblity to log on as user and use "su" to become root. It only prevents logging in as root.

chuser modifies the file /etc/security/login but it is better to use the system commands instead of modifying the file directly. Therefore use "chuser" instead of editing the file.

I hope this helps.

bakunin

Last edited by bakunin; 08-22-2008 at 05:32 AM..
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Disabling Telnet

How do you keep users from logging on while you do file maintenance? Is there a way to temporarily disable telnet? (2 Replies)
Discussion started by: michieka
2 Replies

2. UNIX for Dummies Questions & Answers

disabling telnet

how do i disable the telnet (2 Replies)
Discussion started by: rmuhammad
2 Replies

3. Solaris

Disabling telnet

I am running solaris 9.. currently has telnet / ssh access.. Initially I just want to stop telnet access (but leave ftp open as some scripts etc still using this and need modification) As far as I know I just need to do the following: edit the /etc/inetd.conf file and comment out: telnet ... (2 Replies)
Discussion started by: frustrated1
2 Replies

4. SCO

Disabling root login

Hy, Coud someone tell me how to disable root login via terminal (only from console should be allowed). There is no ssh installed, only telnet. I created a user which will have permission to su to root, but now i don't know where and what to modify to disable root login? SCO OpenServer 5 ... (1 Reply)
Discussion started by: veccinho
1 Replies

5. AIX

Problems with disabling remote root login

Hello! I'm going through security checklist for AIX 5.3 and i just can't disable remote login for root through ssh. What i did: - in /etc/security/user i added a line: rlogin = false which works fine when i try to login through telnet - after installation of openSSH i edited... (3 Replies)
Discussion started by: veccinho
3 Replies

6. SCO

how to disabling root user

dear all, pls give the sollution to disable root login from telnet directly.but it should allow while we type su command (2 Replies)
Discussion started by: prakrithi
2 Replies

7. Solaris

Am not able to login as a root User with telnet

Hi to All, I have configured telnet service in my server but am not able to login with root user in Linux Servers. For that what can i do ? Please help me Thanks in Advance. (1 Reply)
Discussion started by: Sharath Kumar
1 Replies

8. UNIX for Dummies Questions & Answers

etc/ftpd/ftpusers & philosophy of disabling root

we don't have root in our /etc/ftpd/ftpusers and we are getting some pushback from the external auditors about this - specifically as a security risk if a "sniffer" were to catch roots password at the ftp. What do most shops do - disable ftp for root? What do you do to get things to the... (3 Replies)
Discussion started by: LisaS
3 Replies

9. OS X (Apple)

Script Implementation for Disabling Re-Opening Previous Login

Ok guys, I'm just getting back to this amongst several other projects, but I thought I'd re-address it. I'm creating the script to disable windows from the previous login under 10.7. In order to do this it seems I need to create the same script for applications that launch and create the... (6 Replies)
Discussion started by: unimachead
6 Replies

10. UNIX for Advanced & Expert Users

Disabling CBC Cipher mode causes login problems

Hi, As part of the security hardening activity in our team, we have to disable CBC mode cipher encryption, and enable CTR or GCM cipher mode encryption. To do this, in sshd_config I comment out these lines : Ciphers aes128-cbc,blowfish-cbc,3des-cbc MACS hmac-sha1,hmac-md5 and add... (9 Replies)
Discussion started by: anaigini45
9 Replies
ftpusers(4)															       ftpusers(4)

NAME
ftpusers - file listing users to be disallowed ftp login privileges SYNOPSIS
/etc/ftpd/ftpusers The ftpusers file lists users for whom ftp login privileges are disallowed. Each ftpuser entry is a single line of the form: name where name is the user's login name. The FTP Server, in.ftpd(1M), reads the ftpusers file. If the login name of the user matches one of the entries listed, it rejects the login attempt. The ftpusers file has the following default configuration entries: root daemon bin sys adm lp uccp nuucp smmsp listen nobody noaccess nobody4 These entries match the default instantiated entries from passwd(4). The list of default entries typically contains the superuser root and other administrative and system application identities. The root entry is included in the ftpusers file as a security measure since the default policy is to disallow remote logins for this iden- tity. This policy is also set in the default value of the CONSOLE entry in the /etc/default/login file. See login(1). If you allow root login privileges by deleting the root entry in ftpusers, you should also modify the security policy in /etc/default/login to reflect the site security policy for remote login access by root. Other default entries are administrative identities that are typically assumed by system applications but never used for local or remote login, for example sys and nobody. Since these entries do not have a valid password field instantiated in shadow(4), no login can be per- formed. If a site adds similar administrative or system application identities in passwd(4) and shadow(4), for example, majordomo, the site should consider including them in the ftpusers file for a consistent security policy. Lines that begin with # are treated as comment lines and are ignored. /etc/ftpd/ftpusers A file that lists users for whom ftp login privileges are disallowed. /etc/ftpusers See /etc/ftpd/ftpusers. This file is deprecated, although its use is still supported. /etc/default/login /etc/passwd password file /etc/shadow shadow password file See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWftpr | +-----------------------------+-----------------------------+ |Interface Stability |External | | | | | /etc/ftpd/ftpusers | | +-----------------------------+-----------------------------+ |Interface Stability |Obsolete | | | | | /etc/ftpusers | | +-----------------------------+-----------------------------+ login(1), in.ftpd(1M), ftpaccess(4), ftphosts(4), passwd(4), shadow(4), attributes(5), environ(5) 1 May 2003 ftpusers(4)
All times are GMT -4. The time now is 02:09 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy