Problem Summary A remote branch server (e.g., 10.1.20.10) was reachable via ping, but users could not SSH or access HTTPS applications hosted on it. The server was behind a firewall that performed NAT and IPSec VPN termination. Symptoms Observed Root Cause Analysis On closer inspection, […]
![Ticket#25: Server Reachable via Ping but Not SSH – TCP MSS Clamp Missing on Firewall [CCNP Enterprise]](https://networkjourney.com/wp-content/uploads/2025/07/Ticket25_Server-Reachable-via-Ping-but-Not-SSH-–-TCP-MSS-Clamp-Missing-on-Firewall_networkjourney.png)