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sysctl command

FreeBSD Squid Proxy Caching Server Increase File Descriptors Limits

I'm getting an error which read as follows under FreeBSD 7.2 server and Squid stable caching server:

WARNING! Your cache is running out of filedescriptors

How do I fix this problem and increase the number of system-wide available filedescriptors for FreeBSD server?
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FreeBSD Prevent Users From Seeing Information About Processes Owned by Other Users

Many commands accepts username and passwords on the command line and ps, top, sockstat and many commands can display this information to all users on the system. How do I prevent users from seeing information about processes that are being run under another UID to avoid information leakage under FreeBSD operating systems?
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Linux Tune Network Stack (Buffers Size) To Increase Networking Performance

I've two servers located in two different data center. Both server deals with a lot of concurrent large file transfers. But network performance is very poor for large files and performance degradation take place with a large files. How do I tune TCP under Linux to solve this problem?
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FreeBSD Jail Allow Ping / tracerouter Commands

I'm not able to ping from FreeBSD prison (jail). I'm able to resolve the names or use ftp / http for ports but ping and traceroute access is disabled. How do I allow virtualized jail application / users to perform traceroute and ping commands?
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Linux Error: Page Allocation Failure and Solution

Q. How do I get rid of an error message that read as - "Page allocation failure"?
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CentOS / Red Hat Linux IP Forwarding How To

How do I enable IP forwarding under RHEL / Red Hat / Fedora / CentOS Linux operating systems?
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Linux Share a Dial Up Internet Connection

Q. My modem is connected to CentOS Linux server. I'm using wvdial to connect to my ISP; I'd like to connect my laptop via same modem. How do I share a dial up Internet account?
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FreeBSD CPU Information Command

How do I get more information about CPU under FreeBSD operating systems such as CPU Speed and model?
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Linux Increase The Maximum Number Of Open Files / File Descriptors (FD)

How do I increase the maximum number of open files under CentOS Linux? How do I open more file descriptors under Linux?
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