Red Hat Server Tux 2.1 User Manual download pdf (Page 22)

22 Chapter 3. Conﬁguration

3.9.1. TUX FTP Server Security Features

The following are security features of the TUX FTP Server:

• Because TUX does not start per-client processes, the memory allocation overhead for each

FTP client logged in is less than 10 KB. This allows thousands of parallel connections.

• Paranoid parser and paranoid command-evaluation.

• Chroots to docroot.

• Never starts any external userspace process. All FTP functionality is done in a approxi-

mately 900 lines C module, in the kernel.

• Even in kernel mode the TUX FTP Server drops all priviledges and switches to uid and

group nobody.

• Only the most trivial globbing (mget *) supported, and no recursion support.

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Red Hat Server Tux 2.1 User Manual Page 22