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Use letsencrypt on virtual machine behind a reverse proxy with server name indication

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4

I have a server set up with some virtual machines behind a nat.
I want to use encryption for my xmpp-server-vm, and therefore need a certificate inside the vm. Is there a possibility to use nginx as a reverse-proxy so i can run letsencrypt and get/renew the certificates on the vm with the xmpp-server and keep the private key on that machine? I can't use nginx as TLS termination proxy because my vm should not have access to the reverse proxy itself, which would be needed because the xmpp-software needs access to the key.

Edit:

I made a schematic of what i want to do:

My basic problem is, i do not know if letsencrypt works behind a reverse proxy with server name indication enabled, so i can get a certificate inside my xmpp-server-vm to encrypt the xmpp traffic.

nginx kvm-virtualization lets-encrypt

share|improve this question

edited Jan 7 '17 at 15:08

Frederik Nielsen

2,74822341

asked Jan 6 '17 at 20:39

user393856user393856

5810

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Your question is confusing. Can you provide a diagram of your network and server architecture, and perhaps edit your question to make it more clear? Nginx and Let's Encrypt work fine together, but I don't understand your question.
  
  – Tim
  Jan 7 '17 at 5:49
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Tim It looks like he has one global IPv4 address, and so he has forwarded ports 80 and 443 to one VM, and port 5222 (XMPP) to another VM. Now he wants the XMPP VM to be able to use letsencrypt certificates which get fetched (somehow) via the other VM, because certbot uses ports 80 and 443.
  
  – Michael Hampton♦
  Jan 7 '17 at 17:41
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @MichaelHampton that is almost what i wanted to say. The only difference are that i want to use a reverse proxy for the http/https ports, because i have more than one vm which uses http, and i have to get the key and the certificate onto the virtual machine running the xmpp server, because it needs direct access to it.
  
  – user393856
  Jan 7 '17 at 17:48
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Have you considered deploying IPv6? It would eliminate this problem and the xmpp VM could get its own certificate directly.
  
  – Michael Hampton♦
  Jan 7 '17 at 17:49
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I haven't. That ist quite a good idea. However i'll need to find out more on how to get ipv6 running in parallel with my current setup, because it has to stay available via ipv4.
  
  – user393856
  Jan 7 '17 at 17:56
  

  
  
  
  

 | 
show 4 more comments

4

I have a server set up with some virtual machines behind a nat.
I want to use encryption for my xmpp-server-vm, and therefore need a certificate inside the vm. Is there a possibility to use nginx as a reverse-proxy so i can run letsencrypt and get/renew the certificates on the vm with the xmpp-server and keep the private key on that machine? I can't use nginx as TLS termination proxy because my vm should not have access to the reverse proxy itself, which would be needed because the xmpp-software needs access to the key.

Edit:

I made a schematic of what i want to do:

My basic problem is, i do not know if letsencrypt works behind a reverse proxy with server name indication enabled, so i can get a certificate inside my xmpp-server-vm to encrypt the xmpp traffic.

nginx kvm-virtualization lets-encrypt

share|improve this question

edited Jan 7 '17 at 15:08

Frederik Nielsen

2,74822341

asked Jan 6 '17 at 20:39

user393856user393856

5810

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Your question is confusing. Can you provide a diagram of your network and server architecture, and perhaps edit your question to make it more clear? Nginx and Let's Encrypt work fine together, but I don't understand your question.
  
  – Tim
  Jan 7 '17 at 5:49
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Tim It looks like he has one global IPv4 address, and so he has forwarded ports 80 and 443 to one VM, and port 5222 (XMPP) to another VM. Now he wants the XMPP VM to be able to use letsencrypt certificates which get fetched (somehow) via the other VM, because certbot uses ports 80 and 443.
  
  – Michael Hampton♦
  Jan 7 '17 at 17:41
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @MichaelHampton that is almost what i wanted to say. The only difference are that i want to use a reverse proxy for the http/https ports, because i have more than one vm which uses http, and i have to get the key and the certificate onto the virtual machine running the xmpp server, because it needs direct access to it.
  
  – user393856
  Jan 7 '17 at 17:48
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Have you considered deploying IPv6? It would eliminate this problem and the xmpp VM could get its own certificate directly.
  
  – Michael Hampton♦
  Jan 7 '17 at 17:49
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I haven't. That ist quite a good idea. However i'll need to find out more on how to get ipv6 running in parallel with my current setup, because it has to stay available via ipv4.
  
  – user393856
  Jan 7 '17 at 17:56
  

  
  
  
  

 | 
show 4 more comments

I have a server set up with some virtual machines behind a nat.
I want to use encryption for my xmpp-server-vm, and therefore need a certificate inside the vm. Is there a possibility to use nginx as a reverse-proxy so i can run letsencrypt and get/renew the certificates on the vm with the xmpp-server and keep the private key on that machine? I can't use nginx as TLS termination proxy because my vm should not have access to the reverse proxy itself, which would be needed because the xmpp-software needs access to the key.

Edit:

I made a schematic of what i want to do:

My basic problem is, i do not know if letsencrypt works behind a reverse proxy with server name indication enabled, so i can get a certificate inside my xmpp-server-vm to encrypt the xmpp traffic.

nginx kvm-virtualization lets-encrypt

share|improve this question

edited Jan 7 '17 at 15:08

Frederik Nielsen

2,74822341

asked Jan 6 '17 at 20:39

user393856user393856

5810

share|improve this question

edited Jan 7 '17 at 15:08

Frederik Nielsen

2,74822341

asked Jan 6 '17 at 20:39

user393856user393856

5810

share|improve this question

edited Jan 7 '17 at 15:08

Frederik Nielsen

2,74822341

asked Jan 6 '17 at 20:39

user393856user393856

5810

edited Jan 7 '17 at 15:08

Frederik Nielsen

2,74822341

edited Jan 7 '17 at 15:08

Frederik Nielsen

2,74822341

asked Jan 6 '17 at 20:39

user393856user393856

5810

asked Jan 6 '17 at 20:39

user393856user393856

5810

1 Answer
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I managed to get this working by a very simple solution allthough this was not what i originally had in mind. I run letsencrypt on the host OS and copy the private key and certificates into the vm via ssh.

share|improve this answer

answered Jan 12 '17 at 0:01

user393856user393856

5810

add a comment | 

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1

I managed to get this working by a very simple solution allthough this was not what i originally had in mind. I run letsencrypt on the host OS and copy the private key and certificates into the vm via ssh.

share|improve this answer

answered Jan 12 '17 at 0:01

user393856user393856

5810

add a comment | 

1

I managed to get this working by a very simple solution allthough this was not what i originally had in mind. I run letsencrypt on the host OS and copy the private key and certificates into the vm via ssh.

share|improve this answer

answered Jan 12 '17 at 0:01

user393856user393856

5810

add a comment | 

I managed to get this working by a very simple solution allthough this was not what i originally had in mind. I run letsencrypt on the host OS and copy the private key and certificates into the vm via ssh.

share|improve this answer

answered Jan 12 '17 at 0:01

user393856user393856

5810

share|improve this answer

answered Jan 12 '17 at 0:01

user393856user393856

5810

answered Jan 12 '17 at 0:01

user393856user393856

5810

answered Jan 12 '17 at 0:01

user393856user393856

5810