RFC 959 and RFC 1123 recommend sending IP and Synch signals before the ABOR command. Many FTP servers even ignore an ABOR command without the preceding IP and Synch signals. The default behavior of Rebex FTP for .NET is to send IP and Synch, unless a proxy is in use.

However, there are some bad FTP servers that react in an inappropriate way to IP and Synch signals. Problems with some network setups were also experienced.

Setting this flag will disable sending of IP and Synch signals even through non-proxied FTP sessions. You might want to try disabling it if you experience problems while aborting data transfers.

.NET Compact Framework