How can I release an IP in Ubuntu Linux using command line options?
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ip address
How can I look up IP addresses under UNIX or Linux operating systems using command line options?
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I‘ve main domain configured at http://example.com and I’d like to use http://support.example.com with different files. How do I add subdomain support with Lighttpd web server under UNIX or Linux operating systems?
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How do I find or check IP’s that are currently banned using iptables command in Linux? How do I verify that IP address 1.2.3.4 is banned or not in Linux?
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How do I send gratuitous ARPs under Linux? How do I tell my DUMMY router that the IP is over here now, under Linux operating systems?
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How do I block particular IP addresses or host with the iptables command under Linux?
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How do I perform dns lookup under Linux or UNIX or OS X operating systems without using 3rd party web sites for troubleshooting DNS usage?
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