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Server Name Indication(SNI) is an extension of Transport Layer Security which allows multiple secure web sites, with separate certificates, to be hosted at the same IP address
195 questions
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votes
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Nginx: SNI wildcard routing for subdomain, but also proxy+terminate others
My situation:
I have Nginx running on Ubuntu 24.04. It has a few configs on it where it acts as reverse proxy, terminating, for TLS domains local to the box (e.g. WordPress). For these, it has ...
- 21
0
votes
0
answers
74
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What is the current state of outbound TLS SNI support among mail servers?
I'm researching the current state of TLS SNI (Server Name Indication) usage in email infrastructure, specifically focusing on outbound connections from mail servers in SMTPS and SMTP with STARTTLS ...
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0
votes
2
answers
949
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Why my website works when I disabled SNI from IIS?
In my company, we have Windows Server 2022. For each website, we use Let's Encrypt certificates. This showed an alert that said: "No default SSL site has been created. To support browsers without ...
0
votes
1
answer
808
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How can I determine the valid SNIs accepted by an SSL/TLS certificate?
Something driving me nuts on this.. I am testing to an SSL certificate and using different SNIs to determine what is acceptable. I do not own/manage the cert, so am relying on s_client to give me the ...
- 3
1
vote
0
answers
490
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haproxy sni for http/3 quic (udp)
I've got haproxy doing sni routing for a bunch of sites without issue. HTTP/2 works great. Is there a way to setup sni type routing for HTTP/3 (quic) without having any certs installed in haproxy?
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462
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IIS resets TLS handshake with nginx reverse proxy
I am using 2 synchronized IIS servers (as backend for failover) and an nginx reverse proxy (as frontend).
Both IIS servers have identical configuration and websites (due to sync). All websites are ...
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0
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1
answer
1k
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Reverse TCP proxy ports 80 and 443 by server hostname [duplicate]
I have one public IP address. I am trying to allow access via the public IP on ports 80 and 443 to multiple services, differentiated by requested server name.
HOWEVER, one service requires a TCP ...
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0
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1
answer
805
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How to get a secure HTTP monitor in NetScaler to send SNI in its request?
We have a content switch in front of a virtual server in NetScaler ADC, and it acts as a load balancer. It is tied to a service group that has an HTTP monitor. We cannot get this monitor to work.
The ...
0
votes
1
answer
2k
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How to run nginx and ocserv on the same IP:Port using the same domain name?
How to run nginx and ocserv on the same IP:Port using the same domain name? Just like how a similar thing is possible by using SSTP protocol, if I am not mistaken. I am using Ubuntu 20.04.
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1
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1
answer
4k
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How to use AD CS to auto-renew certs for securing IIS websites that use SNI?
I have AD CS which automatically provisions and renews machine certificates for servers bound to the directory. (There is a certificate template which controls this auto-issuance.)
I have an IIS ...
- 494
1
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2
answers
2k
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Linux netfilter NAT based on SNI?
I am trying to do SNI proxying to a subnet on a router while keeping the src IP.
Background: I have a router doing DNAT to do port-forwarding for many application ports, and it is connected to a ...
- 13
1
vote
1
answer
1k
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SSL alternative names mismatch
Santander want to use our website, however when trying to access it they receive the following error:
'Network Error: Your request contacted a host which presented a certificate signed by an untrusted ...
- 11
1
vote
1
answer
614
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Getting AH02032 using TLSv1.2 despite identical SNI server name and Hostname, but SNI has the port number attached. No error in test env. with TLSv1.3
Getting the the error message below despite identical Hostnames. What I don't understand, why the Hostname provided via SNI has the port number attached even though, according to Hostname ...
1
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0
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1k
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Envoy to envoy TLS for TLS proxy
Assume this artitecture
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3
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1
answer
4k
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Why is "tcp-request content accept" frontend instruction is required for proper HAProxy SNI-based routing?
I've recently tried to set up SNI-based routing on HAProxy for mongodb mongodb+srv protocol connection.
I made it working, but it wasn't until I put
tcp-request inspect-delay 5s
tcp-request content ...
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