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Questions tagged [port-443]

Port 443 serves to establish a secure HTTP connection, a.k.a. HTTPS.

41 questions
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Although 80 and 443 are system ports, how are most web servers able to bind to them anyway?

Running a web-service that binds to port 80 usually doesn't require sudoer privileges. Since ports 80/443 are system ports, meaning they can only be used by privileged users, how come those services are still able to bind to these ports?
adaml
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Can't access https despite port 443 is opened

This is my first time setting up a server and I've just installed a SSL cert. I have also made some changes to the iptable to allow access to 443. Below is the output of iptables -L target prot opt source destination ACCEPT all -- …
Gino
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Apache 2.4 updated, now throws: Cannot define multiple Listeners on the same IP:port

I've just updated Apache to 2.4.3 on my AWS instance (running Linux AMI). After the update finished, Apache crashed with the following: Starting httpd: AH00526: Syntax error on line 5 of /etc/httpd/conf.d/ssl.conf: Cannot define multiple Listeners…
Edmond Tamas
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Unable to configure apache to listen to port 443 in Ubuntu

I’ve setup Certbot on Ubuntu, the certificate was created successfully outputting the following: Congratulations! Your certificate and chain have been saved at: /etc/letsencrypt/live/bin-depot.co.uk/fullchain.pem Your key file has been saved…
Dan382
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Redirect HTTP to HTTPS getting Connection Refused

I want to redirect https requests to http on an apache server. I have updated my .htaccess file as described in this previous question: Redirect HTTPS to HTTP However, this doesn't work and gives (in Chrome): Error 102…
williamsdb
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How can two IIS7 domains share SSL port 443 on one IP?

I have two domains: domain1.com and domain2.com. I also have two GoDaddy SSL certificates (one cert for each domain). I only have one IP. I'm running IIS 7 on a Windows Server 2008 R2 standalone server in a workgroup, not a domain. How can I bind…
Andrew
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What can cause SSL/443 port blocking regularly within a specific timeline?

I run on CentOS 6.x in dedicated rackspace cloud hosting and recently I installed SSL and enabled https access for my website. 443 port is enabled in iptables and APF firewall as well. But every 18-20 hours HTTPS suddenly gets blocked(http and 80…
taras
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Open port 80 when using HTTPS?

I'm going through some tutorials right now and I don't understand this one thing. Why do I have to open port 80 when I use HTTPS? Isn't port 443 enough? Or is port 80 open to handle the redirect from http to https?
Nepo Znat
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How do I open 443 port in Ubuntu?

I am currently having some problems at work when having our web under ssl and using the 443 port. I found this website that checks the status of your server. It says that the 443 is closed. Port 443 is closed on xx.xxx.xx.xxx. After a while I tried…
Jotaeme
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nginx reverse proxy address/port already in use

I have an nginx reverse proxy, and I would like to have it forward traffic on to several sites, and listen on port 443 for all of these services. I've seen this done several places, and seems like the normal way to have a reverse proxy setup...it…
trueCamelType
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Connecting to a HTTP URL over port 443

Is it possible to connect to a HTTP URL (for example, http://www.asdfg.com) over port 443? Or only HTTPS URLs (for example, https://www.asdfg.com) can be connected through port 443? I have a proxy server configured to allow only through port 443.…
SpikETidE
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How to block SKYPE when it's using port 80 & 443?

How to block SKYPE when it's using port 80 & 443 in a network. ( better if I can do it by using ISA 2006 and without disabling web) I know if users can't install skype they wont be able to use it. So without that?
Thilina
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Apache how to have 2 virtual host https?

I'm trying to configure 2 domains (A and B) in the same server with different certificates. The domain A works fine, it has it's own certificates and rules to redirect to it. If I try to access to domain B it displays the following message: This…
Oscar Vazquez
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Nginx HTTPS connection to port 443 refused

So I've setup LetsEncrypt on my Nginx server but cannot connect over https. If I run curl https://my.domain.com Then I get the error curl: (7) Failed to connect to my.domain.com port 443: Connection refused So for some reason my Nginx server is…
Bencc
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Nginx: non-www site inaccessible via SSL (connection refused)

I'm trying to get a site secured with SSL, using nginx on Ubuntu 14.04. Here's what my server block file looks like: server { listen 80; listen [::]:80; server_name example.com www.example.com; return 301…
smerg
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