October 2022
Intermediate to advanced
500 pages
19h 57m
English
book
Security Strategies in Linux Platforms and Applications, 3rd Edition
by Ric Messier, Michael Jang
Content preview from Security Strategies in Linux Platforms and Applications, 3rd Edition
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
Start your free trial
Protect with TCP Wrapper
The TCP Wrapper system was originally developed to protect the services controlled through the Internet super server and extended Internet super server services. It’s been extended statically and dynamically to additional services. You’ll see how such services can be protected through the /etc/hosts.allow and /etc/hosts.deny configuration files.
What Services Are TCP Wrapped?
As mentioned, several groups of services may be protected by TCP Wrapper. If you’re looking for candidate services, examine the following configuration files and commands:
Regular Internet super server—Any services configured in the /etc/inetd.conf file can be protected by TCP Wrapper, as long as the TCP daemon (/usr/sbin/tcpd) is included in ...