How would you make your Linux server more secure?

Install only what you need.  Keep your server lean.  Install only those packages that you really need. If there are unwanted packages; purge. The fewer the packages the less chance of unpatched code. Run only what you need.  This output will show you which services are running on which ports: netstat -npl You should also […]

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How do you change your DNS settings in Linux/Windows?

In Windows: Go to Control Panel > Network and Internet > Network and Sharing Center > (on the left bar) Change Adapter Settings Right-Click the adapter you want to configure and choose Properties Double-Click Internet Protocel Version4 (TCP/IPv4) You can set your DNS servers’ address on the bottom half. In Linux: Edit the file: /etc/resolv.conf […]

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Where are log files stored in Linux?

Answer: /var/log The following are the 20 different log files that are located under /var/log/ directory. Some of these log files are distribution specific. For example, you’ll see dpkg.log on Debian based systems (for example, on Ubuntu). /var/log/messages – Contains global system messages, including the messages that are logged during system startup. There are several […]

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Basic Linux Privilege Escalation

Hat tip to g0tmi1k for authoring one of the best basic Linux privilege escalation compilations ever. Operating System What’s the distribution type? What version? 1 2 3 4 cat /etc/issue cat /etc/*-release cat /etc/lsb-release     # Debian based cat /etc/redhat-release   # Redhat based What’s the kernel version? Is it 64-bit? 1 2 3 4 5 6 […]

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