We are using rancher docker orchestration tool: it is using HAProxy for enabling load balancing.
I am wondering how how a hanshake is processed if a new HTTPS connection to a service is established.
Is the the handshake done between client and the load balancer (rancher/HAProxy) or will the load balancer just forward the HTTPS requests to the backend service?
It depends how you configure it.
SSL Termination the handshake is done by the load balancer.
SSL pass-through the handshake is done by the backend.
Related
I have set up a Google Cloud Http(s) Load Balancer with Frontend of Https and Backend of Http. I am getting the following error through Postman for my service:
Error: write EPROTO 140566936757448:error:10000410:SSL routines:OPENSSL_internal:SSLV3_ALERT_HANDSHAKE_FAILURE:../../third_party/boringssl/src/ssl/tls_record.cc:594:SSL alert number 40 140566936757448:error:1000009a:SSL routines:OPENSSL_internal:HANDSHAKE_FAILURE_ON_CLIENT_HELLO:../../third_party/boringssl/src/ssl/handshake.cc:603:
The VM itself works if I call it directly with Http. Is this setup possible or what am I missing?
SSLV3 is not supported by HTTPS load balancer. Please, use a newer (and more secure) version to call your HTTPS load balancer
currently my websocket traffic is delivering from gcp load balancer to nginx to websocket server. am planning to remove one hop so that if i remove nginx. Then how to configure my websocket port (Reserved port) to gcp load balancer so that my websocket traffic will come from gcp load balancer.
Is GCP load balancer support libwebsocket?
Can i configure my own port at GCP load balancer (except 443/80)
I have created a Load Balancer setup today which supports WebSockets with the new TCP SSL Proxy Load Balancer from GCP.
Here's how:
You need to use SSL on the frontend configuration with your SSL
certificate.
Then you need to have a TCP backend configuration pointing to your instance group and correct WebSocket port on your server.
You need to have session affinity enabled on the backend configuration.
AWS NLB supports TLS termination
https://aws.amazon.com/blogs/aws/new-tls-termination-for-network-load-balancers/
NLB being a Layer 4 load balancer I would expect it to work in a passthrough mode by directing the incoming packets to one of the backends without much of state maintenance (except for the flow tracking)
Are there any details available on how AWS implements the TLS termination in NLB ?
Is it possible to do it with open source tooling (like IPVS or haproxy) or AWS has some secret sauce here ?
The TLS termination itself is just what it says it is. TLS is a generic streaming protocol just like TCP one level up so you can unwrap it at the LB in a generic way. The magic is that they keep the IPs intact probably with very fancy routing magic, but it seems unlikely AWS will tell you how they did it.
In my SO question here, I have an example of how to terminate a TCP session in HAProxy and pass the unencrypted traffic to a backend.
In short, you need to use ssl in the frontend bind section and both frontend and backend configurations require use of tcp mode. Here is an example of terminating on port 443 and forwarding to port 4567.
frontend tcp-proxy
bind :443 ssl crt combined-cert-key.pem
mode tcp
default_backend bk_default
backend bk_default
mode tcp
server server1 1.2.3.4:4567
I have a problem to add https to my EC2 instance and maybe you guys can have the answer to make it work.
I have a load balancer that is forwarding the connection to my EC2 instance, I've add the SSL certificate to the load balancer and everything went fine, I've add a listener to the port 443 that will forward to the port 443 of my instance and I've configured Apache to listen on both port 443 and 80, now here the screenshot of my load balancer:
The SSL certificate is valid and on port 80 (HTTP) everything is fine, but if I try the with https the request does not got through.
Any idea?
Cheers
Elastic Load Balancer can not forward your HTTPS requests to the server. This is why SSL is there : to prevent a man in the middle attack (amongst others)
The way you can get this working is the following :
configure your ELB to accept 443 TCP connection and install an SSL certificate through IAM (just like you did)
relay traffic on TCP 80 to your fleet of web servers
configure your web server to accept traffic on TCP 80 (having SSL between the load balancer and the web servers is also supported, but not required most of the time)
configure your web servers Security Group to only accept traffic from the load balancer.
(optional) be sure your Web Servers are running in a private subnet, i.e. with only private IP addressed and no route to the Internet Gateway
If you really need to have an end-to-end SSL tunnel between your client and you backend servers (for example, to perform client side SSL authentication), then you'll have to configure your load balancer in TCP mode, not in HTTP mode (see Support for two-way TLS/HTTPS with ELB for more details)
More details :
SSL Load Balancers : http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/US_SettingUpLoadBalancerHTTPS.html
Load Balancers in VPC :
http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/UserScenariosForVPC.html
Do you have an HTTPS listener on your EC2 instance? If not, your instance port should be 80 for both load balancer listeners.
Context
debian 64bits.
I try to learn https. I created a loadbalancer but I cannot answer tthe client directly from the backend since it receive the LB ip.
Question
I would like to know how I could achieve the following with ssl connection:
client -------> loadbalancer Level4 -----> 3 backends (ssl termination) -----> Back to client
The goal is to avoid decrypting on the loadbalancer but still be able to send the requests to each of the backend servers, decrypt there and send back to client directly.
Any way to make it happen ?