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GET VPN with GDOI: Group Encrypted Transport

GET VPN with GDOI: Group Encrypted Transport

Deploy GET VPN with GDOI: key server and group member configuration, TEK and KEK lifetimes, ACL policy and operational verification.

admin admin 2026-10-14
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WireGuard Mesh vs Hub-and-Spoke Topology Design

WireGuard Mesh vs Hub-and-Spoke Topology Design

Choose between a WireGuard hub-and-spoke and a full mesh: scaling, failure modes, the AllowedIPs traps, and keepalive rules for NATed peers.

admin admin 2026-10-13
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Headscale: Self-Hosted Tailscale Control Server

Headscale: Self-Hosted Tailscale Control Server

Run Headscale as your own Tailscale control plane: install, register nodes, define ACL policies, advertise routes and subnets, and keep the data plane

admin admin 2026-10-05
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Troubleshoot a Flapping IPsec VPN Tunnel on Juniper SRX

Troubleshoot a Flapping IPsec VPN Tunnel on Juniper SRX

Diagnose a Juniper SRX IPsec tunnel that flaps up and down: syslog checks, IKE SA state, VPN monitor settings, interface errors and MTU problems.

admin admin 2026-10-03
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Arista EOS VRF Configuration and Route Leaking

Arista EOS VRF Configuration and Route Leaking

Configure Arista EOS VRFs with CLI: vrf instances, interface assignment, ip routing vrf, BGP route targets and inter-VRF route leaking with verificati

admin admin 2026-09-27
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Tailscale Mesh VPN: WireGuard Without the Config

Tailscale Mesh VPN: WireGuard Without the Config

Tailscale builds a WireGuard mesh with ACLs, MagicDNS and subnet routers. Learn the topology, access control rules and the ops commands that matter.

admin admin 2026-09-26
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OpenVPN Server on Linux: A Hardened Setup Guide

OpenVPN Server on Linux: A Hardened Setup Guide

Set up an OpenVPN server on Linux with PKI, TLS settings, client routing options, and the hardening and troubleshooting steps that matter in productio

admin admin 2026-09-21
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WireGuard Site-to-Site VPN Configuration Guide

WireGuard Site-to-Site VPN Configuration Guide

Build a WireGuard site-to-site tunnel: generate keys, write wg0 configs with AllowedIPs routing, enable forwarding, and verify with wg show.

admin admin 2026-09-20
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IPsec VTI vs Policy-Based VPN: Choosing and Configuring

IPsec VTI vs Policy-Based VPN: Choosing and Configuring

Compare IPsec VTI (route-based) with policy-based crypto maps: routing protocol support, NAT and overlapping subnets, VRF awareness, and when to add G

admin admin 2026-09-19
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strongSwan IKEv2 Site-to-Site VPN with swanctl

strongSwan IKEv2 Site-to-Site VPN with swanctl

Build an IKEv2 site-to-site tunnel with strongSwan and swanctl: certificates, connections, child SAs with traffic selectors, and the commands to verif

admin admin 2026-09-17
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