By Jacek Artymiak
Name: construction Firewalls with OpenBSD and PF, second ed.
Author: Jacek Artymiak
Written via Jacek Artymiak, a widespread contributor to ONLamp.com, construction Firewalls with OpenBSD and PF is the 1st and in simple terms print ebook committed completely to the topic of the pf packet clear out utilized in OpenBSD, FreeBSD, and NetBSD working structures. subject matters lined contain: firewall layout, ruleset syntax, packet normalization (scrubbing), packet redirection (masquerading), packet filtering, bandwidth administration (ALTQ), load balancing, and extra.
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Extra info for Building Firewalls with OpenBSD and PF, 2nd Edition
G. Sun Sparc or Alpha workstations and servers) usually let the operator control the machine via the serial port. 2: Hardware Requirements don’t need to be connected to keyboards or monitors, which is very convenient in data centers or everywhere else where space is at a premium. To install OpenBSD on such machines, you will have to find either a text terminal (they sell used for around $20 on eBay) or a laptop equipped with a serial interface (RS232) and a text terminal emulator, and connect one of these devices to the serial port on the target machine.
A good rule of thumb is to bump the speed of the CPU up 100MHz every time one of the features mentioned on the list on the facing page is added. It is an extremely inaccurate rule, because some services like NIDS or proxy servers also need more memory, but it gives you a rough idea of what to expect. Another important thing to remember is the lack of support for Symmetric MultiProcessor (SMP) architectures, which should be available in the near future, but for now OpenBSD cannot use more than one processor.
Older, 10Mbps cards can be used with 100Mbps equipment if it is marked 10/100Mpbs, but if you mix 10Mbps and 100Mbps cards on the same network segment you will slow down all devices on that segment to 10Mbps, unless you use a switch (some people use the name ‘bridge’) instead of a hub. Using switches is good for your network performance and security. Even though they are slightly more expensive than hubs, switches are almost always a better choice. The only time when a hub is more useful than a switch is when you want to monitor all traffic on a network segment using a single machine (hubs send packets to every host on the same network segment, switches only send packets to their destination hosts so others cannot see them).