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netstat command

Red Hat / CentOS: Check / List Running Services

Q. How do I list all currently running services in Fedora / RHEL / CentOS Linux server?
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Detecting DoS / DDoS Attack on a Windows 2003 / 2008 Server

Question: How do I detect a DDOS (Distributed denial of service) / DOS attack on a Windows Server 2003 / 2000 / 2008? Can I use Linux netstat command syntax to detect DDoS attacks?
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Debian / Ubuntu: Apache2 Change Default Port / IP Binding

Question: How do I change Apache 2 default port under Debian / Ubuntu Linux? I’ve couple of public IPv4 address assigned by my ISP, how do I force Apache2 to listen to a specific IP address? How do I change Apache2 IP address binding?
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Bind Postfix Mail Server To Localhost or Specific IP Address Only

Q. How do I bind Postfix MTA to specific IP address such as 127.0.0.1 or 202.5.1.2?
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How To Tell If Your Linux Server Uses xinetd OR inetd sever

Q. How to tell if my Linux server is using xinetd or inetd service?
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Solaris UNIX Add Static Routes

Q. How do I add Static Routes under Solaris UNIX? My default gateway configured in /etc/defaultrouter, but what is the proper place to configure static routes for a Solaris UNIX server? Can you tell me exact configuration file name for a static routing?
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Linux / UNIX Find Out What Program / Service is Listening on a Specific TCP Port

Q. How do I find out which service is listening on a specific port? How do I find out what program is listening on a specific TCP Port?
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Diagnosing a dos Attack Under Linux

Q. How do I find out if I Linux box is under DoS attack or not form a shell prompt?
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FreeBSD Set a Default Route / Gateway

How do I modify or set a default route for my FreeBSD server? How do I make default route configuration persistent?
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How Do I Find Out My Linux Gateway / Router IP Address?

How do I find out my gateway IP for a computer or a network device that allows or controls access to another computer or network under Linux / UNIX operating systems?
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