QoS using priority from security policies
QoS using priority from security policies Configurations implementing QoS using the priority values defined in the security policies are capable of applying bandwidth limits and guarantees. In addition...
View ArticleQoS using priority from ToS or differentiated services
QoS using priority from ToS or differentiated services Configurations implementing QoS using the priority values defined in either global or specific ToS bit values are not capable of applying...
View ArticleTroubleshooting traffic shaping
Troubleshooting traffic shaping This chapter outlines some troubleshooting tips and steps to diagnose the shapers and whether they are working correctly. These diagnose commands include: diagnose...
View ArticleChapter 26 – Troubleshooting
Chapter 26 – Troubleshooting This handbook chapter describes concepts of troubleshooting and solving issues that may occur with FortiGate units. This FortiOS Handbook chapter contains the following...
View ArticleTroubleshooting tools
Troubleshooting tools FortiOS provides a number of tools that help with troubleshooting both hardware and software issues. These tools include diagnostics and ports; ports are used when you need to...
View ArticleFortiOS ports
FortiOS ports In the TCP and UDP stacks, there are 65 535 ports available for applications to use when communicating with each other. Many of these ports are commonly known to be associated with...
View ArticleFortiAnalyzer/FortiManager ports
FortiAnalyzer/FortiManager ports If you have a FortiAnalyzer unit or FortiManager unit on your network you may need to use the following ports for troubleshooting network traffic. Functionality...
View ArticleFortiGuard troubleshooting
FortiGuard troubleshooting The FortiGuard service provides updates to Antivirus, Antispam, IPS, Webfiltering, and more. The FortiGuard Distribution System (FDS) involves a number of servers across the...
View ArticleTroubleshooting Common questions
Common questions The general troubleshooting tips include, and can help answer, the following questions: How to check hardware connections Are all the cables and interfaces connected properly? Is the...
View ArticleHow to verify the contents of the routing table (in NAT mode)
How to verify the contents of the routing table (in NAT mode) When you have some connectivity, or possibly none at all a good place to look for information is the routing table. The routing table is...
View ArticleHow to check hardware connections
How to check hardware connections If there is no traffic flowing from the FortiGate unit, it may be a hardware problem. To check hardware connections: Ensure the network cables are properly plugged...
View ArticleHow to check FortiOS network settings
How to check FortiOS network settings FortiOS network settings are present in both the web-based manager interface and the CLI. The following information includes troubleshooting and best practice...
View ArticleHow to check CPU and memory resources
How to check CPU and memory resources System resources are shared and a number of processes run simultaneously on the FortiGate unit. If one of these processes consumes nearly all the resources. A...
View ArticleHow to check modem status
How to check modem status Sometimes the modem may not work properly, or the unit may not be detecting the modem. Use the following diagnostic commands to help you troubleshoot issues with the modem....
View ArticleHow to run ping and traceroute
How to run ping and traceroute Ping and traceroute are useful tools in network troubleshooting. Alone, either one can determine network connectivity between two points. However, ping can be used to...
View ArticleHow to check the logs
How to check the logs This step in troubleshooting can be forgotten, but its an important one. Logging records the traffic passing through the FortiGate unit to your network and what action the...
View ArticleHow to verify the correct route is being used
How to verify the correct route is being used If you have more than one default route and wants to make sure that traffic is flowing as expected via the right route, you can run a trace route from a...
View ArticleHow to verify the correct firewall policy is being used
How to verify the correct firewall policy is being used If you have more than one firewall policy, use the count column to check which policy is being used, the count must show traffic increasing. To...
View ArticleHow to check the bridging information in Transparent mode
How to check the bridging information in Transparent mode When FortiOS is in Transparent mode, the unit acts like a bridge sending all incoming traffic out on the other interfaces. The bridge is...
View ArticleHow to check number of sessions used by UTM proxy
How to check number of sessions used by UTM proxy Each FortiGate model has a set limit of the maximum number of sessions the UTM proxy supports. The UTM proxy handles all the traffic for the following...
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