When creating self signed certificate, no prompts
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You can for sure buy a cert or have a client trust a cert for host.domain.tld... And if your browser goes to host.domain.tld you will be fine and browser will be all happy.
But when client ties to go to https://otherhost.otherdomain.tld and gets some page signed for host.domain.tld its going to complain about it..
edit:
There really is no "solution" to this ;) Welcome to HTTPS.. You would have to generate a cert on the fly that is signed by a CA the client trusts for https://otherhost.otherdomain.tldAnd then even then with hsts you could have problems...
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If you are only redirecting sites you control and have certs for, then use haproxy and offload the SSL to the firewall and then you can serve a page off a shared backend that is used when the main server is down.
That only works for domains you control, however, not random Internet hosts.
And a CA will not give you a cert for localhost/127.0.0.1 or a private IP address.
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@jimp No, I'm redirecting any public site requested by private customers so I don't have control and certs for all the possible public sites. I'm redirecting select subgroup of customer group that will attempt to access any public site and I redirect them to a locally hosted page. Works great with http, even the 404 errors get the proper page.
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Then you can't do that unless you do SSL interception with a custom CA like @johnpoz mentioned. That isn't going to be viable.
You're breaking the entire chain of trust laid down by TLS to prevent meddling with content and impersonating servers.
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^ exactly!! How are you going to be helping anyone while doing MITM ;) of their SSL traffic - so you can notify them something is down.. No thanks! Any of your customers that noticed this wouldn't be a customer for long..
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@johnpoz Exactly. Well, I'm disappointed to learn this. Need some way of notifying why no internet so they aren't hard rebooting customer owned premises equipment blowing out the config then calling on me to fix when it's not my equipment. I suppose the best will have to be an unsigned cert with prompts. Hopefully most will figure it out.
Correction; self-signed cert
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Welcome to the world of end to end encryption "everywhere" ;)
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That's a very poor reason to hijack people's secure browsing sessions.
A $5 wrench and some well-delivered threats will be a better deterrent. Or a locking cage and good signage.
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@johnpoz Thanks so much for all your help john, jimp, steven. Not quite the homecoming I was expecting.
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@jimp Threats don't go over well either. I think hijack is a bit strong for what I'm trying to do. Redirecting a customer's planned session that has not yet been established.
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You might argue a self signed cert is actually better in that situation as it's obviously not the site you were trying to reach.
Vs a cert from a known CA but with the wrong host name.
Both produce an alarming error if you're not used to it though
Steve
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@stephenw10 I agree, probably the best. Probably good to deal an alarming site vs threats (just ribbing a bit jimp, I understand). I need to get their attention especially in the no-pay situation and perhaps even RIAA infractions. Was hoping to expand to outages to entire pool but doubtful I'll do that with cert prompts. I'll use it sparingly. Thanks again guys.
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Well, the wrench is an old joke, but threats to the pocketbook also work. "If you unplug this device without authorization, it will result in a service charge of $$$$"
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@jimp Funny! Tried to keep it simple...
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@johnpoz Hey John, when I create a server CA and Cert within PfSense Certificate Manager I'm given the option of downloading a .crt and .key file but not a .pem. Can you instruct?
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crt is just a pem file.. look at it..
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@johnpoz Ahhh, so just rename. Thanks.
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@johnpoz Unfortunately simply renaming doesn't fly.
root/: /usr/local/etc/rc.d/mini_httpd.sh start
34381057080:error:0906D06C:PEM routines:PEM_read_bio:no start line:/builder/pfsense-234/tmp/FreeBSD-src/secure/lib/libcrypto/../../../crypto/openssl/crypto/pem/pem_lib.c:696:Expecting: ANY PRIVATE KEY
34381057080:error:140B0009:SSL routines:SSL_CTX_use_PrivateKey_file:PEM lib:/builder/pfsense-234/tmp/FreeBSD-src/secure/lib/libssl/../../../crypto/openssl/ssl/ssl_rsa.c:635: -
I do not run that... But what I can tell you is the file you export is PEM... simple enough to test it with openssl.
Here I just created a cert for another thread.. Tested it..
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Combine the cert and key in one file:
-----BEGIN PRIVATE KEY----- keydatakeydatakeydatakeydatakeydatakeydatakeydatakeydata -----END PRIVATE KEY----- -----BEGIN CERTIFICATE----- certdatacertdatacertdatacertdatacertdatacertdatacertdatacertdata -----END CERTIFICATE-----At least that's what it looks like it's expecting.
Steve
