메세지로그 파일에 포트센트리관련 메세지 질문 입니다.

May 12 17:33:27 www portsentry[2815]: adminalert: Psionic PortSentry 1.0 is starting.
May 12 17:33:27 www portsentry[2821]: adminalert: Going into listen mode on TCP port: 21
May 12 17:33:27 www portsentry[2821]: adminalert: ERROR: could not bind TCP socket: 21. Attempting to continue
May 12 17:33:27 www portsentry[2821]: adminalert: Going into listen mode on TCP port: 22
May 12 17:33:27 www portsentry[2821]: adminalert: ERROR: could not bind TCP socket: 22. Attempting to continue
May 12 17:33:27 www portsentry[2821]: adminalert: Going into listen mode on TCP port: 25
May 12 17:33:27 www portsentry[2821]: adminalert: ERROR: could not bind TCP socket: 25. Attempting to continue
May 12 17:33:27 www portsentry[2821]: adminalert: Going into listen mode on TCP port: 53
May 12 17:33:27 www portsentry[2821]: adminalert: ERROR: could not bind TCP socket: 53. Attempting to continue
May 12 17:33:27 www portsentry[2821]: adminalert: Going into listen mode on TCP port: 80
May 12 17:33:27 www portsentry[2821]: adminalert: ERROR: could not bind TCP socket: 80. Attempting to continue
May 12 17:33:27 www portsentry[2821]: adminalert: Going into listen mode on TCP port: 110
May 12 17:33:27 www portsentry[2821]: adminalert: ERROR: could not bind TCP socket: 110. Attempting to continue
May 12 17:33:27 www portsentry[2821]: adminalert: Going into listen mode on TCP port: 953
May 12 17:33:27 www portsentry[2821]: adminalert: ERROR: could not bind TCP socket: 953. Attempting to continue
May 12 17:33:27 www portsentry[2821]: adminalert: Going into listen mode on TCP port: 3306
May 12 17:33:27 www portsentry[2821]: adminalert: ERROR: could not bind TCP socket: 3306. Attempting to continue
May 12 17:33:27 www portsentry[2821]: adminalert: Going into listen mode on TCP port: 8080
May 12 17:33:27 www portsentry[2821]: adminalert: Going into listen mode on TCP port: 50010
May 12 17:33:27 www portsentry[2821]: adminalert: Going into listen mode on TCP port: 50020
May 12 17:33:27 www portsentry[2821]: adminalert: Going into listen mode on TCP port: 50030
May 12 17:33:27 www portsentry[2821]: adminalert: PortSentry is now active and listening.
May 12 17:33:27 www portsentry[2821]: attackalert: Possible stealth scan from unknown host to TCP port: 21 (accept failed)
May 12 17:33:34 www last message repeated 257440 times
May 12 17:33:34 www login(pam_unix)[2823]: session opened for user root by LOGIN(uid=0)
May 12 17:33:34 www portsentry[2821]: attackalert: Possible stealth scan from unknown host to TCP port: 21 (accept failed)
May 12 17:33:34 www last message repeated 2066 times

이런 메세지가 뜨는데요..

어드민 경고..정확이 무슨 에러인지 지도좀 해주세요 ^^