Specifications

Chapter 7 Working with FTP Service 121
The following table shows common le extensions and the type of compression
they designate.
File extension What it means
.gz DEFLATE compression
.Z UNIX compress
.bin MacBinary encoding
.tar UNIX tar archive
.tZ UNIX compressed tar archive
.tar.Z UNIX compressed tar archive
.crc UNIX checksum le
.dmg Mac OS X disk image
Files with Resource Forks
Mac OS X clients can take advantage of on-the-y conversion to transfer les created
using older le systems that store information in resource forks.
If you enable MacBinary and disk image autoconversion in FTP service settings, les
with resource forks are listed as .bin les on FTP clients. When a client asks to have one
of these les transferred, on-the-y conversion recognizes the .bin sux and converts
the le to a genuine .bin le for transfer.
Kerberos Authentication
FTP supports Kerberos authentication. You choose the authentication method using
the General pane of FTP service settings in Server Admin. See “Conguring FTP General
Settings” on page 12 4 .
FTP Service Specications
FTP service has the following default specications:
Maximum authenticated users: 50 Â
Maximum anonymous users: 50 Â
Maximum connected users: 1000 Â
FTP port number: 21 Â
Number of failed login attempts before user is disconnected: 3 Â