topic 443 port in Operating System - Linux

443 port

Edwin Ruiz_2 — Wed, 25 Feb 2004 17:10:08 GMT

How can i know if my red hat linux is listening for 443 port (https)?

Re: 443 port

James A. Donovan — Wed, 25 Feb 2004 17:32:12 GMT

netstat -a|grep LISTEN|grep 443

If it's listening, you'll see something there...

Re: 443 port

Edwin Ruiz_2 — Wed, 25 Feb 2004 17:39:34 GMT

i get that

[root@salato-apl10 conf]# netstat -a|grep LISTEN|grep 443
tcp 0 0 *:4443 *:* LISTEN

i think that this is other port, isnt it?

how can i enable https en linux?

Re: 443 port

Stuart Browne — Wed, 25 Feb 2004 21:31:31 GMT

Correct, that's something else.

Using a command like 'netstat -ntlp | grep 4443' will tell you exactally what.

Now, as for getting a 'https' service running, and how easy it is to set up, depends on what Linux distribution you are running.

If you're running a recent RedHat distribution for instance (7.3 or newer I beleive), Apache (httpd) has a 'mod_ssl' package distributed by RH to do it.

If you're compiling your own services, then you'll need the Apache source, the mod_ssl source, and the openssl libraries, and a bit of patience.

If you're running RH (or Debian, i beleive they have packages for https as well), then just go to the appropraite site, and download them.

If you're compiling your own, then start at http://www.modssl.org/ and follow the instructions.

Re: 443 port

Stuart Browne — Wed, 25 Feb 2004 21:34:45 GMT

.. Of course I didn't realise that 'mod_ssl' is part of the standard Apache 2 packages/source ..

Going directly to http://httpd.apache.org/docs-2.0/ is a good start.

Re: 443 port

Martin P.J. Zinser — Wed, 25 Feb 2004 22:53:16 GMT

Hello,

the easiest: Fire up your favorite browser and do a https://localhost/ . If you get a page you have a (secure) Webserver running.

Sidenote: According to my services file port 4443 is "reserved" for Pharos.

Greetings, Martin

Re: 443 port

Alexander Chuzhoy — Thu, 26 Feb 2004 01:33:04 GMT

Another option is to telnet (if from another station) to port 443. Like in the example
telnet x.x.x.x 443 if you have a black window-then the port is open otherwise you'll get connection failed..

Re: 443 port

Edwin Ruiz_2 — Thu, 26 Feb 2004 09:45:19 GMT

Ok! thanks.. then this configuration depend from Apache but no from linux, isnt it?

Re: 443 port

Alexander Chuzhoy — Thu, 26 Feb 2004 10:13:42 GMT

In most cases the apache (if it's linux) is listening on 443 port.So the answer is yes - The configuration depends on apache.Specifically look in the file
/etc/httpd/conf.d/ssl.conf file.
you have the option to specify different port.

If you have erlier versions of linux then the file to edit would be
/etc/httpd/conf/httpd.conf

Re: 443 port

Edwin Ruiz_2 — Thu, 26 Feb 2004 10:50:57 GMT

ok thanks

Re: 443 port

rvrameshbabu — Tue, 23 Mar 2004 12:28:08 GMT

Below commands can be used to find whether the port is listening or not.

# nmap | egrep 'https|443'

# lsof -i tcp:443