GOTFAULT.NET has a series of "security modules" (textfiles) covering a range of programming and technical subjects. Most notably, they included a collection of telnettable "movies" demonstrating the techniques in each module.

Filename	Size	Description of the Textfile
0x100-module.movie	19121	Module 0x100 MOVIE (Captured Telnet Stream)
0x100-module.txt	39746	Module 0x100: Local Stack Overflow (Basic Module) by dx/xgc A.K.A. Thyago Silva (September 9, 2005)
0x200-module.movie	13174	Module 0x200 MOVIE (Captured Telnet Stream)
0x200-module.txt	23913	Module 0x200: Local Stack Overflow (Advanced Module) by dx/xgc A.K.A. Thyago Silva (September 16, 2005)
0x300-module.movie	2471	Module 0x300 MOVIE (Captured Telnet Stream)
0x300-module.txt	20635	Module 0x300: Function Stack Frame Manipulation by barros A.K.A. Carlos Barros (October 1, 2005)
0x400-module.movie	16222	Module 0x400 MOVIE (Captured Telnet Stream)
0x400-module.txt	37595	Module 0x400: Format Strings by dx/xgc A.K.A. Thyago Silva (February 11, 2005)
0x600-module.txt	65287	Module 0x600: Process Infection by barros A.K.A. Carlos Barros (February 24, 2006)
0x700-module.txt	48405	Module 0x700: Port Knocking by hash A.K.A. Carlos (January 27, 2006)
0x800-module.txt	78419	Module 0x800: Distributed/Parallel Systems by hash A.K.A. Carlos (March 23, 2006)
0x900-module.txt	21380	Module 0x900: Basic Shellcode Writing by dx/xgc A.K.A. Thyago Silva (February 8, 2006)

There are 12 files for a total of 386,368 bytes.