I created a let’s encrypt certificate for my domain and install my SSL certificate in the nginx reverse proxy. Now, I want to secure the communication between the proxy and the backend server using also let’s encrypt and I have the same domain name for both the proxy and the server. I don’t want to use self-signed certificate in the backend server. So, how can I use let’s encrypt for both the server and the proxy?
By looking at https://letsencrypt.org/how-it-works/, I got the feeling that a man-in-the-middle attack might be possible in the ‘Domain Validation’ phase.
During that phase, the admin is asked to e.g. perform the challenge of putting a file on the webserver and sending a signed nonce to the CA. What if a man-in-the-middle generated his own (authorization) key pair (while the admin is performing the domain validation) and signed the nonce with the malicious key pair? The admin would have performed the challenge by posting a file on the server and the CA would have gotten a maliciously signed nonce (if the man-in-the-middle is able to discard the signed nonce from the admin). This would mean a compromised authorization key in control of the man-in-the-middle for a domain.
The solution (in my opinion) would be to simply post the signed nonce on the Website (on a path decided by the CA) instead of sending it to the CA, such that the “signature swap” cannot happen. This however is not depicted on the Let’s Encrypted “How it works” explanation.
Am I understanding something wrong or how is such an attack prevented?
I am building a D&D 3.5e Saint Cloistered Cleric with a Vow of Poverty and Vow of Peace. In the past two weeks, I ran across a character ability (a skill, feat, spell, alternate class feature, domain ability, or something) that had wording like:
as a free action you can consult your intuition and know whether something is in accord with your god’s will [or breaks a vow, I’m not certain of the exact benefit]
I remember specifically that it was a free action and it let you check the status of an action under consideration. But I’ve spent 3 hours searching the Book of Exalted Deeds, the Player’s Handbook, and Google and can’t locate it.
In general, is the program $ H(P)$ running the input $ F(i)$ decidable too? Both $ H$ and $ F$ are computable.
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I’m posting this question here along with an answer for reference in case anyone else is wondering how to install free SSL certificates from Let’s Encrypt on GoDaddy Managed WordPress plans. The answer below is not 100% complete as I was unable to get it working 100% at the very end with certificate generation most likely because I was trying this on a Windows machine. You may have better luck working through the steps on a linux machine.
I’m trying to find a web hosting service that can fit my needs.
I need to host at least (could grow in the near future) 10… | Read the rest of https://www.webhostingtalk.com/showthread.php?t=1781346&goto=newpost
I am considering adding a homebrew spell to a game I DM. Here is the exact wording I intend to use:
8th level transmutation
Casting Time: 1 action
Components: V, S, M*
Duration: 8 hours
You touch one creature and one magical item which requires attunement, but to which no creature is currently attuned. At any time within the next eight hours, the affected creature may, as a bonus action, touch the affected item and instantly attune to it without requiring an attunement slot. The creature remains attuned to the item for one minute. After one minute, the spell and the attunement end.
The spell ends early if the creature falls unconscious or if any creature attunes to the magical item. No creature can use this spell to attune to any more than one item at a time.
The creature must still meet any specific requirements this item has for attunement (class, alignment, etc.). If a creature attempts to use this spell to attune to an item whose requirements it does not meet, it suffers the same consequences as it would in the normal attunement process.
* (Any magical item that requires attunement, but to which no creature is currently attuned)
I have tentatively decided this spell should be an 8th-level spell. I feel this strikes a good balance. This spell is a utility spell, and who wants a 9th-level utility spell? But it has the potential to make a character quite powerful for a short period of time, so I don’t want a character to be able to cast it more than once a day.
Does this seem like a reasonable spell level? If not, what level should this spell be
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