proftpd xinetd 모드로 운영이 안되면??

proftpd 를 소스설치하여 standalone 모드로는 정상작동합니다.
그런데 xinetd 모드로 변경하면 접속자체가 안되네요 ㅠㅠ 몇시간째 헤메고 있습니다.
리눅스 서버관리 실무 바이블 를 참고로 설치했으며

1) vi /usr/local/proftpd/etc/proftpd.conf

ServerName                      "Ryu FTP"
ServerType                      inetd
DefaultServer                   on

# Port 21 is the standard FTP port.
#Port                           21

2) vi /etc/xinetd.d/proftpd
ervice ftp
{
        disable         = no
        port            = 21
        flags           = REUSE
        protocol        = tcp
        socket_type     = stream
        instance        = 50
        wait            = no
        user            = root
        server          = /usr/local/proftpd/sbin/in.proftpd  <-- 경로 정확힙니다.
        log_on_success  = HOST PID
        log_on_failure  = HOST RECORD
}
위 두개의 파일의 수정하였으나
[root@localhost xinetd.d]# netstat -anpt
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address               Foreign Address             State       PID/Program name  
tcp        0      0 127.0.0.1:2208              0.0.0.0:*                   LISTEN      2575/hpiod         
tcp        0      0 0.0.0.0:937                 0.0.0.0:*                   LISTEN      2027/rpc.statd     
tcp        0      0 0.0.0.0:3306                0.0.0.0:*                   LISTEN      2772/mysqld        
tcp        0      0 0.0.0.0:111                 0.0.0.0:*                   LISTEN      1992/portmap       
tcp        0      0 0.0.0.0:23                  0.0.0.0:*                   LISTEN      3358/xinetd        
tcp        0      0 127.0.0.1:631               0.0.0.0:*                   LISTEN      2639/cupsd         
tcp        0      0 127.0.0.1:25                0.0.0.0:*                   LISTEN      2803/sendmail: acce
tcp        0      0 127.0.0.1:2207              0.0.0.0:*                   LISTEN      2580/python        
tcp        0    166 114.200.197.24:23           118.234.199.228:38220       ESTABLISHED 3096/in.telnetd: 11
tcp        0      0 192.168.123.193:55582       114.200.197.3:1723          ESTABLISHED 3053/pptp: call man
tcp        0      0 :::80                       :::*                        LISTEN      2841/httpd         
tcp        0      0 :::22  

ftp 21번 포트 가 안열리네요 ㅠㅠ
방화벽 OFF 했으며, service 목록에서 proftpd 체크 하였습니다.
확인해야될 것 알려주십시오..