{"id":1523,"date":"2019-04-22T07:56:52","date_gmt":"2019-04-22T02:26:52","guid":{"rendered":"http:\/\/jaipurhosting.com\/blog\/?p=1523"},"modified":"2019-04-30T10:41:59","modified_gmt":"2019-04-30T05:11:59","slug":"how-to-find-out-which-process-listening-on-a-particular-port","status":"publish","type":"post","link":"https:\/\/www.jaipurhosting.com\/blog\/how-to-find-out-which-process-listening-on-a-particular-port\/","title":{"rendered":"How to find out which process listening on a particular port"},"content":{"rendered":"\n
\n\n\n\n

Description<\/strong><\/p>\n\n\n\n

A port is a logical entity which represents an endpoint of communication and is associated with a given process or service in an operating system.<\/p>\n\n\n\n

In this blog we can see the different ways of finding the process\/service listening on a particular port in Linux. <\/p>\n\n\n\n

1.Using netstat Command<\/strong><\/p>\n\n\n\n

netstat (network statistics) command is used to display information concerning network connections, routing tables, interface stats and beyond.<\/p>\n\n\n\n

It is available on all Unix-like operating systems including Linux and also on Windows OS. <\/p>\n\n\n\n

In case you do not have it installed by default, use the following command to install it. <\/p>\n\n\n\n

$ sudo yum install net-tools\t#RHEL\/CentOS \n$ sudo apt install net-tools\t#Debian\/Ubuntu\n$ sudo dnf install net-tools\t#Fedora 22+<\/code><\/pre>\n\n\n\n
Once installed, you can use it with grep command to find the process or service listening on a particular port in Linux as follows (specify the port).
<\/p>\n\n\n\n
$ netstat -ltnp | grep -w ':80'<\/code><\/pre>\n\n\n\n
\"\"<\/figure>\n\n\n\n
In the above command, the flags. <\/p>\n\n\n\n
  •  l<\/code> \u2013 tells netstat to only show listening sockets. <\/li>
  •  t<\/code> \u2013 tells it to display tcp connections. <\/li>
  •  n<\/code> \u2013 instructs it show numerical addresses. <\/li>
  •  p<\/code> \u2013 enables showing of the process ID and the process name. <\/li>
  •  grep -w<\/code> \u2013 shows matching of exact string (:80). <\/li><\/ul>\n\n\n\n
    2.Using lsof Command<\/strong><\/p>\n\n\n\n
    lsof command (LiSt Open Files) is used to list all open files on a Linux system. <\/p>\n\n\n\n
    To install it on your system, type the command below. <\/p>\n\n\n\n
    $ sudo yum install lsof\t        #RHEL\/CentOS \n$ sudo apt install lsof\t\t#Debian\/Ubuntu\n$ sudo dnf install lsof\t\t#Fedora 22+<\/code><\/pre>\n\n\n\n
    To find the process\/service listening on a particular port, type (specify the port). <\/p>\n\n\n\n
    $ lsof -i :80<\/code><\/pre>\n\n\n\n
    3.Using fuser Command<\/strong><\/p>\n\n\n\n
    fuser command shows the PIDs of processes using the specified files or file systems in Linux. <\/p>\n\n\n\n
    You can install it as follows:<\/p>\n\n\n\n
    $ sudo yum install psmisc\t#RHEL\/CentOS \n$ sudo apt install psmisc\t#Debian\/Ubuntu\n$ sudo dnf install psmisc\t#Fedora 22+<\/code><\/pre>\n\n\n\n
    You can find the process\/service listening on a particular port by running the command below (specify the port). <\/p>\n\n\n\n
    fuser 80\/tcp<\/code><\/pre>\n\n\n\n
    Then find the process name using PID number with the ps command<\/strong> like so. <\/p>\n\n\n\n
    $ ps -p 2053 -o comm=\n$ ps -p 2381 -o comm=<\/code><\/pre>\n\n\n\n
    That\u2019s all! Do you know of any other ways of finding the process\/service listening on a particular port in Linux<\/p>\n\n\n\n

    We hope you\u2019ve found this useful! <\/p>\n","protected":false},"excerpt":{"rendered":"
    Description A port is a logical entity which represents an endpoint of communication and is associated with a given process or service in an operating system. In this blog we can see the different ways of finding the process\/service listening on a particular port in Linux. 1.Using netstat Command netstat (network statistics) command is used to […]<\/p>\n","protected":false},"author":1,"featured_media":1527,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-1523","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/www.jaipurhosting.com\/blog\/wp-json\/wp\/v2\/posts\/1523","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jaipurhosting.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jaipurhosting.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jaipurhosting.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jaipurhosting.com\/blog\/wp-json\/wp\/v2\/comments?post=1523"}],"version-history":[{"count":2,"href":"https:\/\/www.jaipurhosting.com\/blog\/wp-json\/wp\/v2\/posts\/1523\/revisions"}],"predecessor-version":[{"id":1533,"href":"https:\/\/www.jaipurhosting.com\/blog\/wp-json\/wp\/v2\/posts\/1523\/revisions\/1533"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jaipurhosting.com\/blog\/wp-json\/wp\/v2\/media\/1527"}],"wp:attachment":[{"href":"https:\/\/www.jaipurhosting.com\/blog\/wp-json\/wp\/v2\/media?parent=1523"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jaipurhosting.com\/blog\/wp-json\/wp\/v2\/categories?post=1523"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jaipurhosting.com\/blog\/wp-json\/wp\/v2\/tags?post=1523"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}