> According to my observation, the FTP service starts TCPD by the inetd process, then TCPD starts an Ou.FTPD.
> (Maybe this name, I don't know much), but ftpd is another thing (see MAN FTPD)?
> I just started thinking that the FTP service was started by ftpd, but now it is not the case, the master knows, please enlighten me.
The FTP service is of course provided by FTPD, TCPD is a security check, you can use TCPD to control which IP or domain can use this service. If FTPD can be activated. But TCPD uses a reverse domain name resolution, and if there is a problem with the reverse domain name, there is a problem that the login time is too long. - SIDA
You can edit inetd.conf, start FTPD directly instead of being started by TCPD. For example: the original: ftp stream tcp noait root / usr / sbin / tcpd in.ftpd -l -a change to: FTP stream TCP NoWait Root / usr /sbin/in.ftpd in.ftpd -l -a for telnetd, such as method.
