4 posts tagged with “networking”
Every Docker host in my homelab had published container ports bound to the whole LAN with no firewall at all. Here's how I found it and fixed it with iptables DOCKER-USER rules.
Rolling out VLAN and firewall zone segmentation across a previously flat homelab network, plus the wireless side effect that took a night of live troubleshooting to actually root-cause.
Proxmox apt upgrades restart the networking service, detaching LXC veth interfaces from vmbr0. Here is the root cause and the permanent if-up.d hook fix.
Learn how to expose self-hosted services to the internet without opening firewall ports, using Cloudflare Tunnel for enhanced security and DDoS protection.