Built from real-world troubleshooting experience across IPsec, SD-WAN, HA clusters, VDOM architectures, and enterprise security stacks.
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IPsec & SSL VPN Troubleshooting
Step-by-step playbooks for Phase 1/Phase 2 failures, NO_PROPOSAL_CHOSEN errors, DPD drops, unstable tunnels, dead peers, SSL VPN login loops, client cert errors, tunnel mode mismatches, and geo-IP source restrictions. Includes live IKE debug sequences, proposal comparison, and DPD inspection commands.
ike -1 debugphase1/phase2ssl monitorcert-cacheDPD
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Firewall Policy & NAT Diagnostics
Full debug-flow trace sequences (filter by source IP, port, protocol), policy lookup via iprope, NAT decision inspection, session table filtering, implicit deny detection, and UTM profile block analysis. Covers both SNAT and DNAT troubleshooting paths including port forwarding VIPs and hairpin NAT.
debug flowiprope lookupsession filterSNAT/DNATVIP
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SD-WAN Health & Steering
Member status and SLA inspection, health check daemon debug, service rule matching, preferred-interface tracing, and failover verification. Covers latency/jitter/packetloss SLA thresholds, load-balancing rules, and default route validation via SD-WAN members.
sdwan slahealth-checkprefer-interfacefailovermembers
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Routing โ Static, OSPF, BGP, PBR
Kernel routing table inspection, per-destination route lookups, OSPF neighbour and database queries, BGP peer summary and advertised-route inspection, policy-based routing (PBR) debug with proute list, and multicast PIM/IGMP group monitoring.
ospf neighborbgp summaryproute listkernel routePIM/IGMP
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HA / Cluster Troubleshooting
Heartbeat link monitoring, HA checksum sync verification, split-brain detection, forced manual failover, per-unit management IP setup, and full HA daemon debugging (hasync, hatalk). Covers Active-Passive failover events, uptime reset, and recovery procedures.
ha statuschecksumhasyncfailoversplit-brain
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VDOM & Inter-VDOM Routing
Multi-VDOM context switching, VDOM link pair setup and status verification, per-VDOM routing and firewall policy inspection, cross-VDOM debug-flow tracing, and complete inter-VDOM static route configuration examples with /30 link subnets.
vdom-linkcontext switchinter-vdom routemulti-tenant
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Authentication โ LDAP, RADIUS, FSSO
Live LDAP bind and connectivity tests (test authserver), RADIUS PAP authentication debug, fnbamd daemon real-time logging, FSSO agent sync troubleshooting, FortiAuthenticator integration commands, and authenticated user session inspection with group-match verification.
fnbamd -1test authserverFSSO debugauth listFAC
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UTM, IPS, Web Filter & SSL Inspection
Application control log inspection, FortiGuard URL rating tests, SSL deep-inspection profile verification, IPS sensor and anomaly lookup, antivirus outbreak-prevention config, web filter inspection-mode setup, and certificate CA chain validation for SSL inspection.
av-profileips-sensorssl-ssh-profilefortiguard rating
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AI CLI Analyzer โ Groq Powered
Paste any raw FortiGate CLI output and receive instant AI-driven diagnosis using LLaMA 3.3 70B via the free Groq API. Also supports Mixtral 8x7B and LLaMA 3.1 8B. Returns root cause, recommended fix commands, and clear explanation โ no guesswork or manual searching.
LLaMA 3.3 70BMixtral 8x7BGroq free APIoutput parser
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IP Masking & Bulk Anonymizer
Automatically detect and replace all real IPv4 addresses in any CLI output with RFC 5737 documentation IPs (192.0.2.x, 198.51.100.x, 203.0.113.x). Generates a sortable realโfake mapping table. Export masked reports as text for vendor tickets, peer review, or knowledge base articles.
RFC 5737bulk replacemapping tableexport report
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IPv4 Subnet Calculator
CIDR-based subnet calculator returning network and broadcast addresses, first/last usable hosts, netmask, wildcard mask, usable host count, and full binary breakdown of IP/mask/network. Perfect for designing VIP ranges, DHCP scopes, policy address objects, and OSPF network statements.
CIDRwildcard maskbinary viewusable hosts
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Multi-Vendor CLI Reference
Side-by-side CLI command reference for Cisco IOS/IOS-XE, ArubaOS-CX, and Huawei VRP โ covering interface config, VLAN and SVI setup, routing, ACLs, OSPF/BGP adjacency, and troubleshooting commands. Every command has an inline explanation and read-only/caution/danger safety badge.
Cisco IOS-XEArubaOS-CXHuawei VRPside-by-side
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Packet Sniffer & Deep Flow Trace
Pre-built sniffer filter templates (host, port, ICMP, dual-side capture) with verbosity level guidance, and complete debug-flow sequences with function-name and iprope-set-detail flags. Includes key output patterns to identify DNAT, SNAT, policy match, routing decision, and implicit deny.
sniffer packetflow tracedual-sideiprope-set-detail
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Advanced Diagnostics & Kernel Access
Expert-level tools: fnsysctl kernel commands (ifconfig, df, top, ls), daemon debug via diagnose test application (WAD, fnbamd, IPS engine, DNS proxy), control-plane local-in policy inspection, DoS policy counter monitoring, conserve-mode memory threshold status, and live session count queries.
fnsysctldaemon debuglocal-inconserve modeDoS policy
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10 Full Configuration Templates
Copy-ready config guides: initial FortiGate setup from scratch, multi-VDOM tenant setup, IPsec site-to-site VPN, SSL VPN with LDAP user group, SD-WAN with health checks and SLA rules, HA Active-Passive cluster, inter-VDOM routing, port-forwarding VIPs, OSPF/BGP redistribution, and full UTM security profile stack.
initial setupHA clusterSSL VPN LDAPSD-WAN SLAUTM stack
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FortiGuard, FortiManager & FortiAnalyzer
FortiGuard connectivity and rating tests, AV/IPS/web-filter signature update triggers, license status inspection, FortiManager FGFM tunnel and DVM diagnostics, FortiAnalyzer connectivity debug, syslog config verification, SNMP community checks, and NTP sync status โ all in one place.
fortiguardFortiManagerFortiAnalyzerautoupdateSNMP