How do I get a certificate from Let's encrypt via Certbot on an AWS ec2 server I am planning on using as an email server? - email

I am trying to set up an email server on ec2 (mostly just for fun) that won't let me set up a certificate. I am using Let's encrypts Certbot because it was what they recommended. I am also hosting a Google site (I am using Google Domains). Issue: My Google site is using *.mysite.com and www.mysite.com, and I think that this is interfering with my attempts to get a certificate. Any feedback would be helpful.
I have opened many a browser tab looking for this answer. I do not know what to search for. As I said above, any feedback would be helpful.
I do not own the actual mysite.com domain. It is just an example. Just want to avoid any confusion. Thanks!

Related

Can i use localhost as a URL Callback in a messenger webhook

Good evening, just saw that Facebook released his messenger bot toolkit and i immediately jumped right into it to learn more about it and maybe try to do my own.
My problem is that i don't have a https website running and it requires a https valid url. I tried to use my local web-server that has a certificate but it doesn't work.
My question is if this is possible to be done using a localhost url at all.
Thank you in advance
Actually this is possible with localhost. Use ngrok. It allows you to open localhost to the public web, over http or https. This should only be used for testing however.
If you want to test webhooks on your local environment, I would try ultrahook.com, you can get an API Key for free and the tool creates a tunnel from a public URL to your computer. This is from their FAQs page:
You download and run the UltraHook client on your computer. It
connects to UltraHook servers in the cloud and creates a tunnel from a
public endpoint on our servers to your computer. Any HTTP POST
requests sent to the public end point will be sent through the tunnel
an delivered to a private endpoint accessible from your computer.
I have used it to test webhooks from different providers (like payment gateways). In your computer, you can run something like:
ultrahook <subdomain> http://localhost:8000/webhook/
and then configure the webhook URL in your external service to something like <subdomain>.ultrahook.com
My question is if this is possible to be done using a localhost url at all.
No, of course it isn’t – because what such a “callback” actually means, is that Facebook makes a request to your server – and that is hardly possible with localhost.
A valid SSL certificate for your website is easy to get for free these days, via LetsEncrypt. And even if that is not available on your server, there’s still StartSSL, that provide basic certificates for free. All you need is a server you can install them on, or upload them to, or whatever mechanism your hoster provides for it. (And if they don’t provide any, then it might be time to switch.)

HTTPS for local IP address

I have a gadget[*] that connects to the user's WiFi network and responds to commands over a simple REST interface. The user uses a web app to control this gadget. The web app is currently served over http and the app's javascript does AJAX calls to the gadget's local IP address to control it. This scheme works well and I have no issues with it.
[*] By "gadget" I mean an actual, physical IoT device that the user buys and installs within their home, and configures to connect to their home WiFi network
Now, I want to serve this web app over https. I have no issue setting up https on the hosting side. The problem is, now the browser blocks access to the gadget (since the gadget's REST API is over http and not https).
The obvious solution is to have the gadget serve it's REST API over https. But how? It has a local IP address and no one will issue a certificate for it. (Even if they did, I'd have to buy a boatload of certificates for each possible local IP address.) I could round-trip via the cloud (by adding additional logic on my server side to accept commands from the web app and forward it to the gadget over another connection), but this will increase latencies.
Is there a way around this problem? One possibility that I have in mind is to:
Get a wildcard certificate (say, *.mydomain.com)
Run my own DNS that maps sub-domains to a local IP address following a pattern (For example, 192-168-1-123.mydomain.com would map to 192.168.1.123)
Use the wild-card certificate in all the gadgets
My web app could then make AJAX calls to https://192-168-1-123.mydomain.com instead of http://192.168.1.123 and latencies would remain unaffected aside from the initial DNS lookup
Would this work? It's an expensive experiment to try out (wildcard certificates cost ~$200) and running a DNS server seems like a lot of work. Plus I find myself under-qualified to think through the security implications.
Perhaps there's already a service out there that solves this problem?
While this is a pretty old question, it is still nothing that you find out-of-the-box solutions for today.
Just as #Jaffa-the-cake posted in a comment, you can lean on how Plex did it, which Filippo Valsorda explained in his blog:
https://blog.filippo.io/how-plex-is-doing-https-for-all-its-users/
This is very similar to what you proposed yourself. You don't even need a wildcard certificate, but you can generate certificates on-the-fly using Let's Encrypt. (You can still use wildcard certificates, if you want, which Let's Encrypt supports now, too.)
Just yesterday I did a manual proof-of-concept for that workflow, that can be automated with the following steps:
Write a Web Service that can create DNS entries for individual devices dynamically and generate matching certificates via Let's Encrypt - this is pretty easy using certbot and e.g. Google Cloud DNS. I guess Azure, AWS and others have similar offerings, too. When you use certbot's DNS plugins, you don't even need to have an actual web server running on port 80/443.
On you local device, contact that Web Service to generate a unique DNS entry (e.g. ..yourdns.com) and certificate for that domain
Use that certificate in your local HTTPS server
Browse to that domain instead of your local IP
Now you will have a HTTPS connection to your local server, using a local IP, but a publicly resolved DNS entry.
The downside is that this does not work offline from arbitrary clients. And you need to think of a good security concept to create trust between the client that requests a DNS and certificate, and your web service that will generate those.
BTW, do you mind sharing what kind of gadget it is that you are building?
If all you want is to access the device APIs through the web browser, A Simple solution would be to proxy all the requests to the device through your web server.this was even self signed certs for the devices wont be a problem. Only problem though is that the server would have to be on the same network as your devices.
If you are not on the same network, you can write a simple browser plugin (chrome) to send the api request to IoT device. but then the dependency on the app/plugin will be clumsy.

Swisscom Cloud SSL certificate

We're rolling out some simple static web sites onto the Swisscom CloudFoundry cloud, and want to enable SSL for the sites.
Our product manager is not happy with the scapp.io or applicationweb.io names, and we want to be able to add SSL certificates for our domain, e.g "www.swisscom.io".
How do achieve this, given the fact that we're users and not administrators and don't have access to the "Operations Manager" tool? This question is specifically about the Certificate: The setting up of the domain and DNS is clear.
SSL certificates from Let’s Encrypt are now available on the Swisscom Application Cloud: SSL Secure Routes
The cloud guys can probably help you out more here, but one option would be to use: https://www.cloudflare.com/
I was able to use the cloudflare SSL certificate to secure the traffic to and from my application without having to upload a certificate or use the "Operations Manager" tool.
Cheers,
Allan.
I'm currently using an existing VM on https://www.digitalocean.com to serve as a reverse proxy (see https://www.digitalocean.com/community/tutorials/how-to-use-apache-http-server-as-reverse-proxy-using-mod_proxy-extension#enabling-ssl-reverse-proxy-support, e.g.). It works, but it's not very elegant.

SSL Cert on Seperate Email Server and Web Hosting Server?

I am working with a client who needs SSL on their Email and Web Site.
We have their site hosted on a Rackspace Cloud Site (Wordpress so Apache and all that jazz).
From what I can tell their Email is on an ISS server of their own.
They want to apply this SSL Cert they bought through GoDaddy and apply it to this email server and to the site on our hosting server. Now I am only a Web Developer with enough server knowledge to get sites launched and running, But I don't think you can apply the same SSL Cert on two different types of servers.
What would the solution be for this?
Would you purchase a second ssl? Is that even possible?
Sorry if this is a all completely wrong I am trying to use my limited knowledge of SSL to describe the situation.
I'm pretty sure you can use the same certificate if it's going on two servers as long as they are both using the same domain. You don't need to purchase a second ssl. The tricky part might be if the two servers require different certificate file formats.
Also, just do the CSR part on ONE of the servers (use the one you trust the most). On the other server just install the certificate bypassing the CSR part.

Facebook App: any way to run the app without SSL?

I am working on my first app for Facebook and facing (probably) with the SSL problem. If I am testing the app, so it's working well. But then I wanted to test the app by my friend - so I assigned him the role "Tester", he accepted it and I sent him the link to the app.
If he opened the app, he got the error The website is not available - Error 501 (net::ERR_INSECURE_RESPONSE): Unknown error
I started google it and it looks that the cause is the missing SSL certificate on my hosting, where the app is stored.
BUT - how is possible, that the app is working me well without the SSL and to my friend doesn't? If the SSL is required for Facebook apps, why I didn't get the same error?
(I set Secure Canvas URL: to https://example.com/fb-app-directory/, however I don't have at this domain and hosting any SSL certificate).
I never used before SSL. I bought the domain name on Namecheap and hosting on Hostgator. So now, I should buy a SSL certificate from the offer (http://www.namecheap.com/ssl-certificates.aspx) of Namecheap, right?
Would be suitable for the Facebook app the cheapest one?
Look, this SSL problem can only be solved by purchasing a valid SSL certificate or looking for a server which can host your app and is SSL certified such as:
phpfog.com - Provides you with some limited space and database service.
heroku.com - Does not provide any storage space for saving dynamically generated data. To have that service, you have to buy the Amazon buckets service which, again, is a costly affair.
If you don't want to invest any money, I would recommend that you go with phpfog - it is easy and its documentation is pretty good.
You should buy an SSL cert in order for everyone to be able to access your app. Your friend probably has his settings set so that he browses Facebook securely, in this case he is hitting https://example.com/fb-app-directory/, not your actual URL.
The cheapest one isn't the best one, but it should work as long as it's valid. I would suggest using Heroku though, as that way you get everything you need - for free :)
Use a proxy in heroku.com and bring your page in secure domain as https://yourapplication.herokuapp.com/
"Starting October 1, 2011 Facebook will require a valid SSL Certificate for all pages and applications hosted outside of Facebook."
http://www.wpcode.net/fb-ssl.html/
Maybe you are visiting your application with http://apps.facebook.com/... and your friend is visiting with https://apps.facebook.com/....
Another possibility is that your friend has checked "Browse Facebook on a secure connection (https) whenever possible" under "Account Security".
Try ngrok. It exposes a local web server with just one command:
ngrok 80
After this you can access your localhost like this: xxxxxxxx.ngrok.com