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Fortinet Security Fabric
- Overview
  - Benefits
  - Components
- Configuration
- Using the Fortinet Security Fabric
- Automation stitches
- Fabric Connectors
SD-WAN
- Configuring SD-WAN
  - SD-WAN requirements
  - Configuring a basic SD-WAN deployment
- Monitoring SD-WAN
- Applying traffic shaping to SD-WAN traffic
- Viewing SD-WAN information in the Fortinet Security Fabric
High availability
- HA solutions
- FGCP HA
- FGCP HA examples
- Virtual clustering
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  - Full mesh HA example
  - Troubleshooting full mesh HA
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Firewall
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- Example topologies
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- WAN optimization diagnose commands
Security Profiles
- Overview
- Inside FortiOS
- Inspection modes
- AntiVirus
- Web filtering
- DNS filter
  - FortiGuard botnet protection
- Application control
- Intrusion prevention
- Anti-spam filter
- Data leak prevention
- ICAP support
- FortiClient Compliance Profiles
- Proxy options
- SSL/SSH inspection
- Other considerations
Authentication
- Introduction to authentication
- Authentication servers
- Users and user groups
- FortiToken Mobile user instructions
- Managing guest access
- Configuring authenticated access
- Captive portals
- Certificate-based authentication
- Single sign-on using a FortiAuthenticator unit
- Single sign-on to Windows AD
- Agent-based FSSO
- SSO using RADIUS accounting records
- Monitoring authenticated users
- Examples and troubleshooting
IPsec VPN
- IPsec VPN concepts
  - VPN tunnels
  - VPN gateways
  - Clients, servers, and peers
  - Encryption
  - Authentication
  - Phase 1 and Phase 2 settings
  - Security Association
  - IKE and IPsec packet processing
- IPsec VPN overview
  - Types of VPNs
  - Planning your VPN
  - General preparation steps
  - How to use this guide to configure an IPsec VPN
- IPsec VPN from the GUI
  - Phase 1 configuration
  - Concentrator
  - IPsec Monitor
- Phase 1 parameters
  - Overview
  - Defining the tunnel ends
  - Choosing Main mode or Aggressive mode
  - Authenticating the FortiGate unit
  - Authenticating remote peers and clients
  - Defining IKE negotiation parameters
  - Using XAuth authentication
  - Dynamic IPsec route control
- Phase 2 parameters
  - Phase 2 settings
  - Configuring Phase 2 parameters
- Defining VPN security policies
  - Defining policy addresses
  - Defining security policies
- Gateway-to-gateway configuration
  - Gateway-to-gateway configuration
  - Testing
- Hub-and-spoke configuration
  - Configuration overview
  - Configure the hub
  - Configure the spokes
  - Dynamic spokes configuration example
- One-Click VPN (OCVPN)
  - General configuration
  - Key exchange
  - Device polling and controller information
  - System states
  - Debugging and logging
- Dynamic DNS configuration
  - Configuration overview
- FortiClient dialup-client configuration
  - Configuration overview
- FortiGate dialup-client configuration
  - Configuration overview
- Supporting IKE Mode Config clients
  - Automatic configuration overview
- Internet-browsing configuration
  - Configuration overview
- Redundant VPN configuration
  - Configuration overview
- Transparent-mode VPN configuration
  - Configuration overview
- IPv6 IPsec VPNs
  - Configuration examples
- L2TP and IPsec (Microsoft VPN)
  - Configuration overview
- GRE over IPsec (Cisco VPN)
  - Configuration overview
- Protecting OSPF with IPsec
  - Configuration overview
- Redundant OSPF routing over IPsec
  - Configuration
- BGP over dynamic IPsec
- IPsec Auto-Discovery VPN (ADVPN)
  - Example ADVPN configuration
- Logging and monitoring
  - Monitoring VPN connections
  - VPN event logs
- Troubleshooting
  - General troubleshooting tips
  - Troubleshooting L2TP and IPsec
  - Troubleshooting GRE over IPsec
SSL VPN
- Overview
- SSL VPN best practices
- Basic configuration
- SSL VPN client
  - FortiClient
  - Tunnel mode client configuration
- SSL VPN web portal
- Setup examples
- Troubleshooting
Networking
- Interfaces
- DNS
- Advanced static routing
- Dynamic routing
- Multicast forwarding
- Modems
- Troubleshooting
Transparent mode
- Overview
  - What is transparent mode?
  - Transparent mode features
- Installation
- Networking in transparent mode
- Firewalls and security in transparent mode
- IPsec VPN in transparent mode
- Using FortiManager and FortiAnalyzer
- High availability in transparent mode
  - Virtual clustering
  - MAC address assignment
- Best practices
VoIP Solutions: SIP
- Inside FortiOS: Voice over IP (VoIP) protection
- Common SIP VoIP configurations
  - Peer to peer configuration
  - SIP proxy server configuration
  - SIP redirect server configuration
  - SIP registrar configuration
  - SIP with a FortiGate
- SIP messages and media protocols
  - Hardware accelerated RTP processing
  - SIP request messages
  - SIP response messages
  - SIP message start line
  - SIP headers
  - The SIP message body and SDP session profiles
  - Example SIP messages
- The SIP session helper
  - SIP session helper configuration overview
  - Viewing, removing, and adding the SIP session helper configuration
  - Changing the port numbers that the SIP session helper listens on
  - Configuration example: SIP session helper in transparent mode
  - SIP session helper diagnose commands
- The SIP ALG
  - Enabling VoIP support from the GUI
  - SIP ALG configuration overview
  - VoIP profiles
  - Changing the port numbers that the SIP ALG listens on
  - Disabling the SIP ALG in a VoIP profile
  - SIP ALG diagnose commands
- Conflicts between the SIP ALG and the session helper
- Stateful SIP tracking, call termination, and session inactivity timeout
  - Adding a media stream timeout for SIP calls
  - Adding an idle dialog setting for SIP calls
  - Changing how long to wait for call setup to complete
- SIP and RTP/RTCP
- How the SIP ALG creates RTP pinholes
- Configuration example: SIP in transparent mode
- RTP enable/disable (RTP bypass)
- Opening and closing SIP register, contact, via and record-route pinholes
- Accepting SIP register responses
- How the SIP ALG performs NAT
  - SIP ALG source address translation
  - SIP ALG destination address translation
  - SIP call re-invite messages
  - How the SIP ALG translates IP addresses in SIP headers
  - How the SIP ALG translates IP addresses in the SIP body
  - SIP NAT scenario: source address translation (source NAT)
  - SIP NAT scenario: destination address translation (destination NAT)
  - SIP NAT configuration example: source address translation (source NAT)
  - SIP NAT configuration example: destination address translation (destination NAT)
  - SIP and RTP source NAT
  - SIP and RTP destination NAT
  - Source NAT with an IP pool
  - Different source and destination NAT for SIP and RTP
  - NAT with IP address conservation
  - Controlling how the SIP ALG NATs SIP contact header line addresses
  - Controlling NAT for addresses in SDP lines
  - Translating SIP session destination ports
  - Translating SIP sessions to multiple destination ports
  - Adding the original IP address and port to the SIP message header after NAT
- Enhancing SIP pinhole security
- Hosted NAT traversal
  - Configuration example: Hosted NAT traversal for calls between SIP Phone A and SIP Phone B
  - Hosted NAT traversal for calls between SIP Phone A and SIP Phone C
  - Restricting the RTP source IP
- SIP over IPv6
- Deep SIP message inspection
  - Actions taken when a malformed message line is found
  - Logging and statistics
  - Deep SIP message inspection best practices
  - Configuring deep SIP message inspection
- Blocking SIP request messages
- SIP rate limiting
  - Limiting the number of SIP dialogs accepted by a security policy
- SIP logging
- Inspecting SIP over SSL/TLS (secure SIP)
  - Adding the SIP server and client certificates
  - Adding SIP over SSL/TLS support to a VoIP profile
- SIP and HA–session failover and geographic redundancy
  - SIP geographic redundancy
  - Supporting geographic redundancy when blocking OPTIONS messages
  - Support for RFC 2543-compliant branch parameters
- SIP and IPS
- SIP debugging
  - SIP debug log format
  - SIP-proxy filter per VDOM
  - SIP-proxy filter command
  - SIP debug setting
  - Display SIP rate-limit data
Best practices
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  - Rack mounting
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  - Heartbeat interfaces
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- Explicit proxy
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- Logging and reporting
  - Log management
  - System memory and hard disks
Managing devices
- Managing “bring your own device”
- Managing Fortinet devices
Server load balancing
- Inside FortiOS: server load balancing
- Basic load balancing configuration example
- Configuring load balancing
- HTTP and HTTPS load balancing, multiplexing, and persistence
- SSL/TLS load balancing
- IP, TCP, and UDP load balancing
- Example HTTP load balancing to three real web servers
- Example Basic IP load balancing configuration
- Example Adding a server load balance port forwarding virtual IP
- Example Weighted load balancing configuration
- Example HTTP and HTTPS persistence configuration
System administration
- Administrators
- Monitoring
- Replacement messages
- Administration for schools
- PPTP and L2TP
  - Configuring L2TP VPNs
  - L2TP configuration overview
- Session helpers
- Advanced concepts
Traffic shaping
- Overview
- Configuring traffic shaping
- Monitoring traffic shaping
- Traffic shaping examples
- Traffic shaping priority queueing (PRIQ)
- Troubleshooting traffic shaping
Virtual Domains
- VDOMs overview
  - Benefits
  - Configurations
- Configuring VDOMs
- Example configurations
  - Example 1: NAT mode
  - Example 2: NAT and transparent mode
- Troubleshooting VDOMs
FortiWifi and FortiAP Configuration
- Introduction to wireless networking
- Captive portals
- WiFi LAN configuration
- Access point deployment
- Remote AP setup
- Wireless mesh
  - Configuring a meshed WiFi network
  - Configuring a point-to-point bridge
- Hotspot 2.0
- Combining WiFi and wired networks with a software switch
  - FortiAP local bridging (private cloud-managed AP)
  - Using bridged FortiAPs to increase scalability
- Using remote WLAN FortiAPs
- Features for high-density deployments
- Wireless network protection
- Wireless network monitoring
- Wireless network client configuration
- Wireless network examples
  - Basic wireless network example
  - Complex wireless network example
- Managing a FortiAP with FortiCloud
  - FortiCloud-managed FortiAP WiFi
  - FortiCloud-managed FortiAP WiFi without a key
- Using a FortiWiFi unit as a client
  - Using a FortiWiFi unit in the client mode
  - Configuring a FortiAP unit as a WiFi Client in client mode
- Support for location-based services
  - Configuring location tracking
  - Viewing device location data on the FortiGate unit
- Troubleshooting
- Reference
FortiSwitch devices managed by FortiOS
- Connecting FortiLink ports
- Using the FortiGate GUI
- Using the FortiGate CLI
- Network topologies
- Optional setup tasks
- FortiSwitch port features
- FortiSwitch port security policy
- Additional capabilities
- Troubleshooting
FortiOS Carrier
- Overview of FortiOS Carrier features
  - MMS
  - GTP
- MMS Concepts
- MMS Configuration
- GTP basic concepts
- GTP Configuration
- SCTP Concepts
  - SCTP Firewall
- Troubleshooting
Sandbox inspection
- Using FortiSandbox with a FortiGate
  - Connecting a FortiGate to FortiSandbox
  - FortiSandbox console
- Sandbox integration
  - Overview
  - Example configuration
- Sandbox inspection FAQ
FortiView
- Overview
  - Enabling FortiView
  - FortiView interface
- FortiView consoles
- Reference
- Troubleshooting
Logging and reporting
- Logging and reporting overview
- Logging and reporting for small networks
- Logging and reporting for large networks
- Advanced logging
- Troubleshooting and logging
Troubleshooting
- Troubleshooting methodologies
- Troubleshooting tools
- Troubleshooting tips
- Troubleshooting resources

Home FortiGate / FortiOS 6.0.0 Handbook

Source NAT with an IP pool

6.0.0

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Source NAT with an IP pool

You can choose NAT with the Dynamic IP Pool option when configuring a security policy if the source IP of the SIP packets is different from the interface IP. The FortiGate ALG interprets this configuration and translates the SIP header accordingly.

This configuration also applies to destination NAT.

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Source NAT with an IP pool

You can choose NAT with the Dynamic IP Pool option when configuring a security policy if the source IP of the SIP packets is different from the interface IP. The FortiGate ALG interprets this configuration and translates the SIP header accordingly.

This configuration also applies to destination NAT.

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