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Intranet user cannot access intranet ftp server by public network address because we don’t undo detect ftp in area

Publication Date:  2012-10-19 Views:  736 Downloads:  0
Issue Description

Do the address mapping on the firewall and configure NAT in the area
Symptom :intranet user cannot access intranet server by accessing public network address. It will register it is wrong to open the resource of FTP server and please ensure you have the permission 
Alarm Information
Handling Process
1、 The problem also exist after changing other browser
2、 If the intranet user can access private network address to server
3、 Check the firewall configuration carefully, we can find user doesn’t configure detect ftp in the area. Because the FTP server of user is passive mode. We need undo detect ftp intra-domain and domain
4、 Configure detect ftp intra-domain , the problem has been solved.
Root Cause
1. The problem of browser
2. The problem of user account
3. Check equipment configuration
We need undo correlation inspection of ASPF for the multichannel protocol of FTP.