cyberstrikeus 5.1.6 Ensure telnet server is not enabled (Scored)
Profile Applicability
- Level 1
Description
The telnet-server package contains the telnet daemon, which accepts connections from users from other systems via the telnet protocol.
Rationale
The telnet protocol is insecure and unencrypted. The use of an unencrypted transmission medium could allow a user with access to sniff network traffic the ability to steal credentials. The ssh package provides an encrypted session and stronger security.
Audit Procedure
Using Command Line
Ensure the telnet services are not enabled:
grep ^telnet /etc/inetd.conf
Expected Result
No results should be returned.
Remediation
Using Command Line
Remove or comment out any telnet lines in /etc/inetd.conf:
sed -i 's/^telnet/#telnet/' /etc/inetd.conf
Default Value
Not enabled by default on Ubuntu 12.04 LTS Server.
References
- CIS Ubuntu 12.04 LTS Server Benchmark v1.1.0
Profile
Level 1 - Scored