From the category archives:

Troubleshooting

FreeBSD Set Network Polling To Boost Performance

I‘ve Intel PRO/1000 Gigabit Ethernet adapter installed in my server. How do I set network card (NIC) polling and disable interrupts under FreeBSD operating systems to boost network performance for 100M and 1000M network links?

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Uninstall / Remove Webmin Software

How do I uninstall or remove Webmin software under Linux / UNIX operating system?

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keychain: Set Up Secure Passwordless SSH Access For Backup Scripts

We establish connections to remote systems without supplying a password, however I do not want to store my password less keys ( passphrase-free keys) on my servers. ssh-agent, takes care of keys with passphase, which allowing me to easily have ssh-agent process per system per login session. How do I dramatically reduces the number of times I’ve to punch my passphrase from once per new login session to once every time my local server is rebooted? How do I use keychain utility for all my backup scripts for secure passwordless login?

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Postfix Hide Client (MUA) System IP Address / Hostname

I‘ve central mail server gateway. All of our internal systems through this box. How do I remove or hide the hostnames and IP addresses of our internal systems from the messages headers before they go out to other users for security purpose?

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Linux Limit CPU Usage Per Process

I don’t want background process to eat all my CPU. I know how to find out CPU utilization but how do I limit the cpu usage of a process under Linux operating system? How do I force a process to limit itself to 25% only?

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