Posts tagged #MTU

2posts

All posts tagged with #MTU.

tagged #MTU

LatestNetworkingSSH KEX Hang: A VPN Tunnel at MTU 1500 is not a TunnelSSH connects, then dies mid-handshake. A local port-forward to a remote database cluster through a bastion stopped working, hanging on the first large packet of the SSH session. How an oversized MTU on a VPN interface created a silent black hole.September 15, 202612 min readRead →

September 2026

07MonNetworking13 min readAWS IAM Identity Center Sign-In Failure Caused by an MTU Black HoleWhen the AWS access portal loads but authentication hangs indefinitely, the fault may lie below the application layer. How a 1478-byte path MTU and dropped ICMP messages created a silent TLS handshake black hole.