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tshoot-sim
Deterministic network troubleshooting simulator. Diagnose site-to-site VPN issues using real Linux commands in a sandboxed environment.
Firewallhigh
Scenario A: Tunnel Up But Internal Server Unreachable
Cannot reach internal server at Site B over VPN
BeginnerStart →
MTU/PMTUDhigh
Scenario B: VPN Up But Application Fails
Web application over VPN tunnel times out
IntermediateStart →
Routingcritical
Scenario C: Remote Subnet Unreachable After Maintenance
Site B LAN unreachable from Site A after maintenance window
BeginnerStart →
MTU/PMTUDhigh
Scenario D: HTTPS Stalls Over VPN — MTU/PMTUD Blackhole
HTTPS dashboard at Site B loads partially then stalls
AdvancedStart →
Servicehigh
Scenario E: VPN Up But Web Server Connection Refused
Web server at Site B returning connection refused over VPN
BeginnerStart →