Security
Security is the condition of being protected against danger or loss.
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In this article by Christer Edwards, we will explore FreeBSD Jails. FreeBSD Jails are a kernel-level security mechanism which allows you to safely segregate processes within a sandbox environment....
You can find out a lot about your network by using a variety of different tools. Understanding the layout of your network, and where packets are going, and what people are doing is important. This...
AIX V6.1 has introduced a secure flavor of FTP (and ftpd) based on OpenSSL, using Transport Layer Security (TLS) to encrypt both the command and the data channels of file transfer. This article...
There are many tools available that allow you to synchronize files across UNIX directories, but doing it effectively, and securely, takes a little bit more effort. This article looks at solutions for...
Secure programs must minimize privileges so that any bugs are
less likely to be become security vulnerabilities. This article
discusses how to minimize privileges by minimizing the
privileged...
In the past few days, I've been sorting through my piles of notes and organizing the security tips I've gathered from various resources over the years. I thought some of them might interest you, so...
Those familiar with Java recognize the security concept of a sandbox. For those that aren't, it's the concept that everyone gets a unique, well-equipped sandbox to play in, and a person in one...
In last week's article, we looked at which parts of a password policy could be implemented by editing the /etc/login.conf file on your FreeBSD system. This week, I want to look at some techniques...
Author's Note: This article details the IRIX binary compatibility implementation for the NetBSD operating system. This includes the creation of a new emulation subsystem inside the NetBSD kernel and...
So far this year, I've been concentrating on protecting your FreeBSD system by using permissions and creating firewall rules. In the next series of articles, I'd like to take a look at some of the...
Arguments abound between system administrators as to the
correct way to back up a network of Unix hosts. Some argue that
tapes are the answer, while others lean toward more modern
means, such...
This article shows us a root exploit in BSD derived telnet daemons; buffer overflows in xman, the Merrit and Lucent RADIUS servers. . .
This article helps us fine-tune our firewall rules. She uses DHCP as an example, steps through its requirements and shows how to implement the appropriate firewall rules.
This article describes several new problems for NT 4.0 and Win2K users, including a TCP/IP bug, a print spooler memory leak, IIS security references, and more.
Building a firewall? This gets you started with an IPFW firewall on FreeBSD.
This article explains how to create IPFW firewall rules.
