Tag: uiptable

Explanation of IP Tables in Red hat Linux or CentOS ?

IPTables is a user-space utility or executable binary used to manage the firewall tables provided by Linux kernel firewall module. iptables command applies to IPv4, and ip6tables command is available...

By Saket Jain Published December 22, 2018 Linux/Unix

Saket Jain on How to configure and install Nagios Server on Linux ?: “Please check your system resolv.conf/DNS settings, it looks its not able to resolve the hostname. The URL is correct.” Jul 18, 13:37
deepanshu on How to configure and install Nagios Server on Linux ?: “[root@localhost nagios]# wget https://assets.nagios.com/downloads/nagioscore/releases/nagios-4.4.5.tar.gz –2023-07-02 19:15:08– https://assets.nagios.com/downloads/nagioscore/releases/nagios-4.4.5.tar.gz Resolving assets.nagios.com (assets.nagios.com)… failed: Name or service not known. wget: unable to resolve host…” Jul 3, 08:13
aasdasdKEKEK on Solved: subscription-manager – Not supported by a valid subscription.: “You Genius. How do we “verify if we have enough subscription available on redhat support to add this new server.”” May 27, 18:26
Ryan on How to schedule a cron to execute on first monday of every month ?: “You can do 0 3 */99,1-7 * mon /root/test.sh which does: if minute==0 AND hour==3 AND (every 99th day of month OR day between…” May 9, 06:07
KristoR on Counts characters inside a file in Linux bash.: “Thanks for the article. One important correction: the syntax for character count is wc -m. -c is for bytes.” Jan 6, 08:12

Saket Jain is a GNU/Linux sysadmin from Alwar, Rajasthan, India. He works for a worldwide leading consumer product company and takes great pleasure on working with Linux Internals alongwith using FOSS tools to increase productivity in all areas of his daily work.

Achievements
1. He derived NGEL from Centos.
2. Created delete, undelete and deleteperm command.
3. Has more than 8 Years of experience in Linux/Unix System administration and consultation.
4. Certified Yoga Trainer under Govt. of India.
5. Limca Book of Record Certificate Holder in 2012
6. Author of the book "Unix Administration Quick Guide"
7. ITIL 2011 Foundation Certified, and RHCE Certified under RHEL5,6, and 7.
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Tag: uiptable

Explanation of IP Tables in Red hat Linux or CentOS ?

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