請教一個關於ftp連接數的問題
是我公司的一台ftp伺服器，使用的是ncftpd，最近在ftp登陸的時候總是提示已經達到了最大用戶數40，從而無法登陸
我查看過其配置文件，
max-users=40
max-users-per-ip=2
# netstat -anp
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN 2150/ncftpd
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 1738/cupsd
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1982/sendmail: reje
tcp 0 0 111.111.111.111:21 219.73.25.166:20541 ESTABLISHED -
tcp 0 0 111.111.111.111:21 81.230.101.167:2633 ESTABLISHED -
tcp 1 0 111.111.111.111:21 216.7.175.100:51540 CLOSE_WAIT -
tcp 0 336 111.111.111.111:21 81.230.101.167:2629 FIN_WAIT1 -
tcp 1 0 111.111.111.111:21 65.4.230.81:3572 CLOSE_WAIT 17356/ncftpd
tcp 0 0 111.111.111.111:21 24.161.134.22:3513 ESTABLISHED -
tcp 0 0 :::80 :::* LISTEN 2008/httpd
tcp 0 0 :::22 :::* LISTEN 1948/sshd
tcp 0 0 ::ffff:111.111.111.111:80 ::ffff:67.195.111:45184 TIME_WAIT -
tcp 0 0 ::ffff:111.111.111.111:80 ::ffff:221.232.15:18864 TIME_WAIT -
tcp 0 0 ::ffff:111.111.111.111:80 ::ffff:74.125.16.:53532 TIME_WAIT -
tcp 0 0 ::ffff:111.111.111.111:80 ::ffff:67.195.111:45001 TIME_WAIT -
tcp 0 0 ::ffff:111.111.111.111:80 ::ffff:69.196.161:45523 TIME_WAIT -
tcp 0 0 ::ffff:111.111.111.111:80 ::ffff:208.80.193:50631 TIME_WAIT -
tcp 0 0 ::ffff:111.111.111.111:80 ::ffff:74.55.6.210:3769 TIME_WAIT -
tcp 0 0 ::ffff:111.111.111.111:80 ::ffff:125.34.41.6:3882 TIME_WAIT -
tcp 0 2424 ::ffff:111.111.111.111:22 ::ffff:221.219.11:12772 ESTABLISHED 18354/5
tcp 0 0 ::ffff:111.111.111.111:80 ::ffff:221.232.15:18860 TIME_WAIT -
tcp 0 0 ::ffff:111.111.111.111:80 ::ffff:221.232.15:18832 TIME_WAIT -
tcp 0 0 ::ffff:111.111.111.111:22 ::ffff:221.219.11:24414 ESTABLISHED 18545/6
tcp 0 0 ::ffff:111.111.111.111:80 ::ffff:66.249.68.:56435 TIME_WAIT -
tcp 0 0 ::ffff:111.111.111.111:80 ::ffff:66.249.68.:41923 TIME_WAIT -
tcp 0 0 ::ffff:111.111.111.111:80 ::ffff:66.249.68.:54374 TIME_WAIT -
tcp 0 0 ::ffff:111.111.111.111:80 ::ffff:61.247.222:58988 TIME_WAIT -
tcp 0 0 ::ffff:111.111.111.111:80 ::ffff:64.191.65.2:1533 TIME_WAIT -
tcp 0 0 ::ffff:111.111.111.111:80 ::ffff:202.131.30:40502 TIME_WAIT -
tcp 0 0 ::ffff:111.111.111.111:80 ::ffff:94.98.190.:48558 TIME_WAIT -
tcp 0 0 ::ffff:111.111.111.111:80 ::ffff:66.249.68.:57776 TIME_WAIT -
tcp 0 0 ::ffff:111.111.111.111:80 ::ffff:125.46.73.1:1057 TIME_WAIT -
tcp 0 0 ::ffff:111.111.111.111:80 ::ffff:221.232.15:18824 TIME_WAIT -
udp 0 0 127.0.0.1:33957 127.0.0.1:5309 ESTABLISHED 17349/ncftpd
udp 0 0 127.0.0.1:33958 127.0.0.1:5309 ESTABLISHED 17355/ncftpd
udp 0 0 127.0.0.1:33959 127.0.0.1:5309 ESTABLISHED 17356/ncftpd
udp 0 0 127.0.0.1:33960 127.0.0.1:5309 ESTABLISHED 17357/ncftpd
udp 0 0 127.0.0.1:33961 127.0.0.1:5309 ESTABLISHED 17358/ncftpd
udp 0 0 127.0.0.1:33962 127.0.0.1:5309 ESTABLISHED 17359/ncftpd
udp 0 0 127.0.0.1:33963 127.0.0.1:5309 ESTABLISHED 17360/ncftpd
udp 0 0 127.0.0.1:33964 127.0.0.1:5309 ESTABLISHED 17361/ncftpd
udp 0 0 127.0.0.1:33965 127.0.0.1:5309 ESTABLISHED 17362/ncftpd
udp 0 0 127.0.0.1:33966 127.0.0.1:5309 ESTABLISHED 17363/ncftpd
udp 0 0 127.0.0.1:33967 127.0.0.1:5309 ESTABLISHED 17364/ncftpd
udp 0 0 127.0.0.1:33968 127.0.0.1:5309 ESTABLISHED 17365/ncftpd
udp 0 0 127.0.0.1:33969 127.0.0.1:5309 ESTABLISHED 17366/ncftpd
udp 0 0 127.0.0.1:33970 127.0.0.1:5309 ESTABLISHED 17367/ncftpd
udp 0 0 127.0.0.1:33971 127.0.0.1:5309 ESTABLISHED 17368/ncftpd
udp 0 0 127.0.0.1:33972 127.0.0.1:5309 ESTABLISHED 17369/ncftpd
udp 0 0 127.0.0.1:33973 127.0.0.1:5309 ESTABLISHED 17370/ncftpd
udp 0 0 127.0.0.1:33974 127.0.0.1:5309 ESTABLISHED 17371/ncftpd
udp 0 0 127.0.0.1:33975 127.0.0.1:5309 ESTABLISHED 17372/ncftpd
udp 0 0 127.0.0.1:33976 127.0.0.1:5309 ESTABLISHED 17373/ncftpd
udp 0 0 127.0.0.1:33977 127.0.0.1:5309 ESTABLISHED 17374/ncftpd
udp 0 0 127.0.0.1:33978 127.0.0.1:5309 ESTABLISHED 17375/ncftpd
udp 0 0 127.0.0.1:33979 127.0.0.1:5309 ESTABLISHED 17376/ncftpd
udp 0 0 127.0.0.1:33980 127.0.0.1:5309 ESTABLISHED 17377/ncftpd
udp 0 0 127.0.0.1:5309 0.0.0.0:* 2308/hfncftpd
udp 0 0 127.0.0.1:33982 127.0.0.1:5309 ESTABLISHED 17378/ncftpd
udp 0 0 127.0.0.1:33983 127.0.0.1:5309 ESTABLISHED 17379/ncftpd
udp 0 0 127.0.0.1:33984 127.0.0.1:5309 ESTABLISHED 17380/ncftpd
udp 0 0 127.0.0.1:33985 127.0.0.1:5309 ESTABLISHED 17381/ncftpd
udp 0 0 127.0.0.1:33986 127.0.0.1:5309 ESTABLISHED 17382/ncftpd
udp 0 0 127.0.0.1:33987 127.0.0.1:5309 ESTABLISHED 17383/ncftpd
udp 0 0 127.0.0.1:33988 127.0.0.1:5309 ESTABLISHED 17384/ncftpd
udp 0 0 127.0.0.1:33989 127.0.0.1:5309 ESTABLISHED 17385/ncftpd
udp 0 0 127.0.0.1:33990 127.0.0.1:5309 ESTABLISHED 17387/ncftpd
udp 0 0 127.0.0.1:33991 127.0.0.1:5309 ESTABLISHED 17388/ncftpd
udp 0 0 127.0.0.1:33992 127.0.0.1:5309 ESTABLISHED 17389/ncftpd
udp 0 0 127.0.0.1:33993 127.0.0.1:5309 ESTABLISHED 17390/ncftpd
udp 0 0 127.0.0.1:33994 127.0.0.1:5309 ESTABLISHED 17391/ncftpd
udp 0 0 127.0.0.1:33995 127.0.0.1:5309 ESTABLISHED 17392/ncftpd
udp 0 0 127.0.0.1:33996 127.0.0.1:5309 ESTABLISHED 17393/ncftpd
udp 0 0 127.0.0.1:33997 127.0.0.1:5309 ESTABLISHED 17394/ncftpd
udp 0 0 0.0.0.0:631 0.0.0.0:* 1738/cupsd
udp 0 0 127.0.0.1:9720 127.0.0.1:9721 ESTABLISHED 2150/ncftpd
udp 0 0 127.0.0.1:9721 0.0.0.0:* 2308/hfncftpd
其中tcp在21埠的連接一共才有6個
但是一共有 40來個 ncftpd 的udp進程，這就很奇怪了，各位有知道是為什麼
謝謝了
[火星人
]
請教一個關於ftp連接數的問題已經有4659次圍觀
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