I'm configuring an OpenBSD (version 4.3) as a dedicated firewall. I have 1 gig in RAM and a 4 gig compact flash card. I want to store 31 days worth of logs. "Building Firewalls with OpenBSD and PF, 2nd ed" says that the swap space should be at least 2x the amount of RAM, which would mean 2 gigs for swap space. Some other people say that it's being used as a dedicated firewall and it should never use the swap space, so we should allocate as little swap space as possible.
Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.
Regular patching is part of a system administrator's tasks. However, many patches require that the system be in single-user mode before they can be installed. A cluster patch in particular can take quite a while to apply if the machine…
This article offers some helpful and general tips for safe browsing and online shopping. It offers simple and manageable procedures that help to ensure the safety of one's personal information and the security of any devices.
Learn several ways to interact with files and get file information from the bash shell.
ls lists the contents of a directory: Using the -a flag displays hidden files: Using the -l flag formats the output in a long list: The file command gives us mor…
Learn how to find files with the shell using the find and locate commands.
Use locate to find a needle in a haystack.: With locate, check if the file still exists.: Use find to get the actual location of the file.: