關于ftp認證慢的問題

今天在客戶這里給客戶解決一個關于ftp認證慢的問題.
連接后需要等待一段時間才能夠進行認證.但是在認證后傳輸文件是速度很快的.
根據感覺這個東西是dns方面的問題.
經過在google上面查找終于找到了關于這個方面的資料.

Logins to the ftp server take a long time, after that things run smooth

Possible causes:IDENT (RFC931) lookup is enabled in WU-FTPD. This has a timeout of 10 seconds.If the protocol (port 113) gets blocked by a firewall or suchlike, it willwait for timeout. If it is 30 seconds and you are using Redhat >= 7 with x.netd,disable AUTH in inetd as well. Change the entries in /etc/xinetd.d/ftp thatread:

log_on_suclearcase/" target="_blank" >ccess      += DURATION USERID
log_on_failure      += USERID

Remove the 'USERID' from both.Any other time period: DNS is broken for the IP address the connection iscoming from.


按照上面的方法經過配置后從新起動xined.就一切ok了:)

原文轉自：http://www.kjueaiud.com