proftpd root 계정말고 일반 계정 으로 설치할려면 ...

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INSTALL 파일에 나와있다

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    By default the ProFTPD files will be installed as user 'root' and the
    first group with gid 0 listed in /etc/group, usually 'root' or 'wheel'.
    If you wish to install using a different user or group ownership, set
    the install_user and install_group environment variables before running
    configure.  Using a Bourne-ish style shell (e.g. sh, ksh, bash), you can
    do this on the command line like this:

        $ install_user=root install_group=wheel ./configure

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하지만 실행은 반드시 root 만~~

http://www.proftpd.org/docs/faq/linked/faq-ch4.html#AEN253

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2. "inet_create_connection() failed: Operation not permitted".

You aren't starting ProFTPD as root, or you have inetd configured to run ProFTPD as a user other than root. The ProFTPD daemon must be started as root in order to bind to tcp ports lower than 1024, or to open your shadow password file when authenticating users. The daemon switches uid/gids to the user and group specified by the User/Group directives during normal operation, so a "ps" will show it running as the user you specified.

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