51 posts in categories technical

Mail setup for deSEC

This page describe the cli mail setup for deSEC

· 2 minutes reading time

tls-proxy-tunnel: Transparent TLS Tunnelling Through Corporate HTTP Proxies

How tls-proxy-tunnel (tpt) uses SNI peeking to tunnel TLS connections through corporate HTTP CONNECT proxies without ever terminating TLS — layer 4, zero config on the client side.

· 3 minutes reading time

Building a native file upload handler for Caddy v2

How I built caddyv2-upload, a native file upload handler for Caddy v2 written in Go — the problem it solves, and how it works.

· 2 minutes reading time

How does SNI Routing work in HAProxy

Learn how HAProxy container uses TLS Server Name Indication (SNI) to route encrypted TCP connections without decrypting them — enabling multiple services like Nextcloud and XMPP to share port 443.

· 4 minutes reading time
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Session stickiness in OpenShift

How OpenShift and Kubernetes handle session stickiness via HAProxy cookie-based routing.

· 6 minutes reading time
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curl:// for Network Debugging — curlup 2017

Talk from curlup 2017: how to use curl as a network debugger — telnet replacement, --resolve for SNI debugging, and why -v and -k are essential options.

· 2 minutes reading time