Practical Tips: Remove unnecessary services in Linux

Practical Tips: Remove unnecessary services in Linux-general Linux technology-Linux technology and application information. For more information, see the following. After you have installed Linux, I believe many of you may want to provide some amazing services, such as WWW, mail, or FTP services. However, these services are potentially dangerous. Many hackers use the services you opened to destroy the website! Basically, what is troublesome is the Trojan Horse program, which uses your website as a trunk site to attack the Target target of hackers. So ??? Too many? After inux, remove unnecessary programs or services! To ensure your network security!
　
Close some services:
　
After you start Linux's network functions, we recommend that you disable some services on the network. These services are generally not used! Therefore, your daily behaviors (such as e-mail, WWW, and FTP) will not be affected. Since daily behaviors will not be affected, the security of your network can be enhanced, of course it is required ??? Br/>
Close some services:
　
There are many ways to disable it. I usually use/usr/sbin/setup to disable it, but if I use this method to disable it, I need to restart Linux, which is a bit more troublesome, if you are using the RedHat6.1 system of our webpage, run/usr/sbin/setup! Then select System services to open all Service Startup projects to the following:
　
Atd
　
Crond
　
Inet
　
Keytable
　
Kudzu
　
Network
　
Random
　
Sendmai (if you have enabled the e-mail Service)
　
Smb (if you have enabled the SAMBA Service)
　
Syslog
　
Xfs (if you run X-windows)
　
Other services are enabled as required ??? Carrier ?? Why is it true? What kind of models do you have? Why is it true that you can throw a complaint ??? Qiao xiaxiao raised his father and asked him to raise his father ?? Modulo? Br/>
Set the service at startup:
　
There is also a file set for the service at startup, that is,/etc/inetd. conf file. In this file, you can enable the remaining four services and annotate other services (add a # symbol ).
　
Ftp stream tcp nowait root/usr/sbin/tcpd in. proftpd
　
Telnet stream tcp nowait root/usr/sbin/tcpd in. telnetd
　
Pop-3 stream tcp nowait root/usr/sbin/tcpd ipop3d
　
Imap stream tcp nowait root/usr/sbin/tcpd imapd
　
In addition, if your RedHat version is later than 7.0, the Directory of various services will be in the/etc/xinetd. d directory! Because xinetd places all services individually in different files, you need to correct all files! Generally, you only need to change disable = no in each file to disable = yes!
　
Remove some packages from Linux:
　
Although we have already turned off some services, we 'd better remove this suite from him! The following kits are unnecessary and you can remove them:
　
Git
　
Finger
　
Talk
　
Ytalk
　
Ucd-snmp-utils
　
In addition, some ftp suites can be removed! (If you don't need it !) The removal method is very simple. Use rpm:
　
Rpm-e git finger talk ytalk ucd-snmp-utils
　
Reboot:
　
Don't teach me this! Reboot.