Chapter 4 – Authentication This Handbook chapter contains the following sections: Introduction to authentication describes some basic elements and concepts of authentication. Authentication servers describes external authentication servers, where a FortiGate unit fits into the topology, and how to configure a FortiGate unit to work with that type of authentication server. Users and user groups […]

Intermediate System to Intermediate System Protocol (IS-IS) This section describes the Intermediate System to Intermediate System Protocol (IS-IS). The following topics are included in this section: IS-IS background and concepts How IS-IS works Troubleshooting IS-IS Simple IS-IS example Network layout and assumptions Expectations CLI configuration Verification Troubleshooting   IS–IS background and concepts Intermediate System to Intermediate […]

Open Shortest Path First (OSPF) This section describes OSPF routing. The following topics are included in this section: OSPF Background and concepts Troubleshooting OSPF Basic OSPF example Advanced inter-area OSPF example Controlling redundant links by cost   OSPF Background and concepts OSPF (Open Shortest Path First) is a link-state interior routing protocol, that is widely […]

Border Gateway Protocol (BGP) This section describes Border Gateway Protocol (BGP). The following topics are included in this section: BGP background and concepts Troubleshooting BGP Dual-homed BGP example Redistributing and blocking routes in BGP     BGP background and concepts The border gateway protocol contains two distinct subsets — internal BGP (iBGP) and external BGP […]

Routing Information Protocol (RIP) This section describes the Routing Information Protocol (RIP). The following topics are included in this section: RIP background and concepts Troubleshooting RIP Simple RIP example RIPng — RIP and IPv6   RIP background and concepts This section contains: Background Parts and terminology of RIP How RIP works   Background Routing Information […]

IPv6 in dynamic routing Unless otherwise stated, routing protocols apply to IPv4 addressing. This is the standard address format used. However, IPv6 is becoming more popular and new versions of the dynamic routing protocols have been introduced. Dynamic routing supports IPv6 on your FortiGate unit. The new versions of these protocols and the corresponding RFCs are: […]

Dynamic routing terminology Dynamic routing is a complex subject. There are many routers on different networks and all can be configured differently. It become even more complicated when you add to this each routing protocol having slightly different names for similar features, and many configurable features for each protocol. To better understand dynamic routing, here […]