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want to use the OpenSSL cryptographic interface; crypto(9) is for programmers who want to access crypto routines within the kernel; and crypto(4) is for cryptographic accelerator hardware. Type “man 4 crypto” and you’ll see what you want. CRYPTO(4) OpenBSD Programmer’s Manual CRYPTO(4) NAME crypto - hardware crypto […]

Using OpenBSD Problem-Solving Resources Let’s pick a common question and use the OpenBSD resources to solve it. We’ll use several different methods to find an answer. One topic that comes up frequently is that of hardware-accelerated cryptography: how does it work, and what does OpenBSD do to support it? Here’s […]

Non @OpenBSD.org Mailing Lists You can find a fairly complete list of all OpenBSD-related mailing lists hosted by third parties at http://www.OpenBSD.org/mail.html. This includes a variety of lists in languages other than English, as well as some very narrow, special-purpose lists. One particular mailing list I highly recommend for less […]

Mailing Lists You can find a variety of mailing lists dedicated to OpenBSD, run by both the official OpenBSD project and various third parties. We’ll discuss what lists exist and how to use them to best advantage. The Main Mailing Lists OpenBSD has quite a few mailing lists for public […]

Other Websites Many people maintain websites dedicated to OpenBSD, or related to OpenBSD, or generally useful to the OpenBSD Project. Any time you have a problem or are trying to understand something, check out these sites for more information. Read third-party documentation carefully and skeptically, however. Anyone can put up […]

www.OpenBSD.org The OpenBSD website contains a variety of information useful for general OpenBSD administration, installation, and management. The most useful portions are the FAQ and the platform-specific hardware support documents, but the site as a whole contains much useful information. From the front page you see links describing how […]

arc h”). Section Numbers and Man You might find cases where the man page you want has the same name as a man page in some other section of the manual, especially as you add additional software to your OpenBSD machines. In those cases, specifying the section number is […]

much irrelevant information. A similar search with whatis(1) gives the following. # whatis ping ping (8) - send ICMP ECHO_REQUEST packets to network hosts # That’s more like it! You may find that such a narrow search isn’t enough for some terms, however. Experiment […]

SYNOPSIS ping [-DdfLnqRrv] [-c count] [-I ifaddr] [-i wait] [-l preload] [-p pattern] [-s packetsize] [-t ttl] [-w maxwait] host DESCRIPTION ping uses the ICMP protocol’s mandatory ECHO_REQUEST datagram to elicit an ICMP ECHO_REPLY from a host or gateway. ECHO_REQUEST datagrams (“pings’’) have an […]

Man Pages Man pages, short for “manual,” are the original way of presenting UNIX documentation. While man pages have a reputation for being obtuse, difficult to read, or incomplete, the OpenBSD manual pages are quite informative. The OpenBSD team considers man pages to be the final word in […]