Mac port 80 already in use

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User profile for user: webmonk webmonk. Question: Q: Question: Q: what the heck is running on port 80? Connected to localhost. How can i ID that service? Any thoughts about what is going on? All ideas appreciated! All replies Drop Down menu. Loading page content. User profile for user: Camelot Camelot. Reply Helpful Thread reply - more options Link to this Post. May 18, AM in response to webmonk In response to webmonk Ah ha, thank you! I wasn't familiar with that command. That is it.

Is it somehow grabbing port 80 before apache does?

What is Listening Port

If i kill it, it seems to restart itself. I was able to kill the process and restart apache right away. That seems to keep it from restarting. But this seems far from an ideal situation. How is this supposed to work? Is my config mixed up somewhere apachectl configtest: OK?


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However, it may need to be told to listen on specific ports, or only on selected addresses, or a combination of both. This is often combined with the Virtual Host feature, which determines how httpd responds to different IP addresses, hostnames and ports. The Listen directive tells the server to accept incoming requests only on the specified port s or address-and-port combinations. If only a port number is specified in the Listen directive, the server listens to the given port on all interfaces.


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If an IP address is given as well as a port, the server will listen on the given port and interface. Multiple Listen directives may be used to specify a number of addresses and ports to listen on. The server will respond to requests from any of the listed addresses and ports.

For example, to make the server accept connections on both port 80 and port , on all interfaces, use:.

How to Use the Port Scanner in Mac OS X Network Utility

To make the server accept connections on port 80 for one interface, and port on another, use. Overlapping Listen directives will result in a fatal error which will prevent the server from starting up. See the discussion in the wiki for further troubleshooting tips.


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  • References.
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  • When httpd is restarted, special consideration must be made for changes to Listen directives. During a restart, httpd keeps ports bound as in the original configuration to avoid generating "Connection refused" errors for any new attempts to connect to the server. If changes are made to the set of Listen directives used which conflict with the old configuration, configuration will fail and the server will terminate.

    To have such configuration changes take effect, it is necessary to stop and then start the server.

    Troubleshooting - DDEV-Local Documentation

    One complicating factor for httpd administrators is whether or not an IPv6 socket can handle both IPv4 connections and IPv6 connections. On systems where it is disallowed by default, a special configure parameter can change this behavior for httpd.

    Several ports(8005, 8080, 8009) required by Tomcat Server at localhost are already in use

    On the other hand, on some platforms, such as Linux and Tru64, the only way to handle both IPv6 and IPv4 is to use mapped addresses. If you want httpd to handle IPv4 and IPv6 connections with a minimum of sockets, which requires using IPv4-mapped IPv6 addresses, specify the --enable-v4-mapped configure option.