Setting ssl_prefer_server_ciphers directive in nginx config

This question is about setting the correct value of ssl_prefer_server_ciphers while configuring nginx. According to a fairly typical config suggested by Mozilla, the value should be off (source: https://ssl-config.mozilla.org/#server=nginx&server-version=1.17.7&config=intermediate&openssl-version=1.0.1g). According to nginx’s own documentation, one should always set this to on: https://www.nginx.com/blog/nginx-https-101-ssl-basics-getting-started/ (search the document for ssl_prefer_server_ciphers). I’m stumped as to which advice to follow.…

Why are internal IPs being leaked by CoreDNS pods?

I know that I have done something wrong, but I don’t know what exactly, and I am struggling to troubleshoot my problem. My environment is: Kubernetes installed through kubespray Calico networking The error I’m getting is 2020-01-05T09:03:12.928Z [ERROR] plugin/errors: 2 . NS: read udp 10.233.88.10:50172->172.21.132.1:53: i/o timeout 172.21.132.1 is my pfSense box, which works as…

Is it possible to create a simplex c# tcp client

I have a c# client app. It sends data to my server using UDP. However, this stops working after I upgrade to Windows 2019 Server. the reason it stopped working is contained in this link: https://social.technet.microsoft.com/Forums/Windows/en-US/965e107e-d9b0-4240-ac3f-74797c91b476/unable-to-send-udp-packets-larger-than-the-mtu-with-windows-build-1809-using-c-udpclient?forum=win10itpronetworking Essentially, it says: My conclusion is that this optimization (UDP Checksum Offload) was broken in the 1809 release and…