Problems Accessing FTP Sites
Many potential problems can arise when using FTP, or file transfer protocol, sites. As the name implies, FTP enables users to transfer data between computers. Examples of FTP use include uploading web pages to a server and downloading a file from a server via the Internet.
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Authentication
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There are many ways to authenticate to an FTP site, but it requires being an authenticated user. An authenticated user is someone who has been given permission to connect to the FTP site.
Resources
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In some cases, authenticated users may not have been given rights to FTP sources. Even if you can access the FTP site, an authenticated user without rights will not be able to view the directory tree.
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Firewall
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There may be a firewall in place preventing communication to and from the TCP/IP ports. This can be due to Internet security settings that may be incorporated into software such as MacAfee and Norton security programs. Companies and other administrative superiors may have established policies prohibiting access.
Connection Limits
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An FTP site may have a limited quantity of available simultaneous connections. If this number is met, further connection attempts will be denied and logged for administrative purposes.
Bandwidth Limit
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A bandwidth limit governs how much information can be transferred at a time. If this number is close to being met, the connection will become slower. If the communication between the computer and server exceeds an established duration, the connections will time out, resulting in an error.
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