How to check open ports in Linux using nc, telnet and curl command ?
Today in this post, we will see how to check for open port in Linux using telnet and curl commands. I. Using Telnet command Telnet command is very common,...
Tag: port
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How to check for open port in Linux on multiple servers together ?
Suppose you have a list of servers, and you want to check for a particular port on which server its open. So if you telnet each server on that port...
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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...
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TCPDump useful examples for day to day tasks for RHEL/CentOS.
In this article we will look for tcpdump examples which are useful to accomplish our day to day tasks. Lets have a look at various examples step by step. 1....
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How to check which process is using a port in AIX ?
Today we will look how to get the process details which is using a particular socket or port in AIX. 1. Get the port number socket details. ngeaix091--> netstat -Aan|...
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How to setup port forwarding to login on a host via Jump server via putty ?
Today we will discuss an interesting thing how to take GUI of any remote server via port forwarding. This tip is usually helpful to open ILO of a server which...
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How to debug SSL Certificate issue(s) with a host in linux: openssl utility ?
Today we will look how to debug SSL Issues with a website/host and the issues with different HTTP/IMP/POP port. In short, this post describes the usage of openssl command. I....
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How to get active connections on a particular port in Linux ?
Here we will look how to get active connections on a particular port in Linux. The active connections have a state “ESTABLISHED” when we look at the netstat output. We...
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How to get services listening to a particular port in Linux ?
Today we will look how to get the service name listening to a particular port on Linux. The preferred and widely used command is netstat. With netstat, we can grep...