portsentry를 설치한후 netstat 결과질문

[root@ns mail]# netstat -atp
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 *:1                     *:*                     LISTEN      24669/portsentry
tcp        0      0 *:20034                 *:*                     LISTEN      24669/portsentry
tcp        0      0 *:32771                 *:*                     LISTEN      24669/portsentry
tcp        0      0 *:32772                 *:*                     LISTEN      24669/portsentry
tcp        0      0 *:40421                 *:*                     LISTEN      24669/portsentry
tcp        0      0 *:32773                 *:*                     LISTEN      24669/portsentry
tcp        0      0 *:32774                 *:*                     LISTEN      24669/portsentry
tcp        0      0 *:199                   *:*                     LISTEN      697/snmpd
tcp        0      0 *:31337                 *:*                     LISTEN      24669/portsentry
tcp        0      0 *:mysql                 *:*                     LISTEN      926/mysqld
tcp        0      0 *:6667                  *:*                     LISTEN      24669/portsentry
tcp        0      0 *:11                    *:*                     LISTEN      24669/portsentry
tcp        0      0 *:pop3                  *:*                     LISTEN      24889/xinetd
tcp        0      0 *:5742                  *:*                     LISTEN      24669/portsentry
tcp        0      0 *:imap                  *:*                     LISTEN      24669/portsentry
tcp        0      0 *:111                   *:*                     LISTEN      24669/portsentry
tcp        0      0 *:79                    *:*                     LISTEN      24669/portsentry
tcp        0      0 *:15                    *:*                     LISTEN      24669/portsentry
tcp        0      0 *:54320                 *:*                     LISTEN      24669/portsentry
tcp        0      0 *:2000                  *:*                     LISTEN      24669/portsentry
tcp        0      0 *:http                  *:*                     LISTEN      812/httpd
tcp        0      0 *:27665                 *:*                     LISTEN      24669/portsentry
tcp        0      0 *:1524                  *:*                     LISTEN      24669/portsentry
tcp        0      0 *:ftp                   *:*                     LISTEN      24889/xinetd
tcp        0      0 *:ssh                   *:*                     LISTEN      732/sshd
tcp        0      0 *:119                   *:*                     LISTEN      24669/portsentry
tcp        0      0 *:1080                  *:*                     LISTEN      24669/portsentry
tcp        0      0 *:smtp                  *:*                     LISTEN      6853/sendmail: acce
tcp        0      0 *:12345                 *:*                     LISTEN      24669/portsentry
tcp        0      0 *:12346                 *:*                     LISTEN      24669/portsentry
tcp        0      0 *:635                   *:*                     LISTEN      24669/portsentry
tcp        0      0 *:49724                 *:*                     LISTEN      24669/portsentry
tcp        0      0 *:540                   *:*                     LISTEN      24669/portsentry
tcp        0  43801 xxx.xxx.xxx.xxx :http    xxx.xxx.xxx.xxx:64419     FIN_WAIT1   -
tcp        0      0 xxx.xxx.xxx.xxx:smtp    xxx.xxx.xxx.xxx:40365       ESTABLISHED -
tcp        0   2868 xxx.xxx.xxx.xxx:ssh     xxx.xxx.xxx.xxx:1391    ESTABLISHED 6236/sshd

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xxx.xxx.xxx.xxx => ip를 지우고 제가 넣은 것입니다.

portsentry를 설치후에 netstat -atp 를 하게되면 나타나는 결과 입니다.

portsentry로 열린 포트가 많이 나오는데요 정상적인건가요?

실무바이블책에 나온 예제에는 이렁 것들이 않나와서 질문을 합니다.

글구 마지막줄의 3줄은 무슨 의미 인가요?