Old Miscellaneous Computer Books (Matlock DE4)

I'm offering many old computer books, covering a variety of subjects. These date from 1990s into early 2000s so, whilst they cover the basic technologies, they are not up to date with all the modern stuff. For example the book on CSS only covers v2.1.

With so many on offer, I've divided them into categories, though some may appear in more than one category.

I've indicated the year of issue and approx number of pages.

When replying please state which one(s) you would like. Collection from Matlock at a time to suit you.

This lot don't fit into any of the other categories so are down as Miscellaneous - [info in square brackets shows the subject]

SSH the secure shell, the definitive guide [network security] (2001, 540pp)
Stopping spam [email] (1998, 190pp)
Understanding data communications [networking] (1991, 540pp)
DNS for dummies [internet] (2003, 340pp)
Apache the definitive guide [web server] (1999, 370pp)
Running Linux 3rd edition [operating systems] (1999, 730pp)