Tag: firewall

Solved: NFS shares are not visible on the NFS client ?

Suppose you have exported the NFS share from the server, however its not visible on the client. Hence to troubleshoot this, we need to check if the NFS port is...

By Saket Jain Published February 16, 2022 AIX, Linux/Unix
How to monitor IP Tables changes in Linux ?

There is no direct way to monitor IP Tables change in Linux. However today we will look at an interesting article how to monitor the ip tables status to confirm...

By Saket Jain Published June 9, 2021 Linux/Unix
Explanation of Firewalld in Linux RHEL 7, or Centos 7 and how to work with it.

Similar to IPTables, firewalld is a user space utility program to manage Linux system firewall. Firewalld and IPtables both use the same kernel module i.e. NetFilter. As a result, only...

By Saket Jain Published December 23, 2018 Linux/Unix

Vishu on How to create full size one partition using parted command in Linux ?: “Thanks a lot. This was exactly what I was looking for. Other blogs are very confusing but this worked for…” Jul 30, 23:26
cccc on Print only usernames from /etc/passwd file using grep, awk or cut commands.: “love it” Oct 18, 16:13
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

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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