Firewall rule troubleshooting is a process in which you test different rule configurations until you achieve the desired configuration. It is much like the debugging process in coding, but simpler. Learn how to open logs and troubleshoot firewall rules you have set up to control access privileges to the network.
- [Instructor] Firewall rules can be complicated … but I'm going to share a few things that I look … for when my firewall rules aren't working … the way I expected. … One, remember floating rules comes first. … If we go to Firewall, Rules, and Floating, … you can see the floating rules that we have in place … from both our rules that we've generated, … and also the floating rules that have been generated … by our traffic shaper. … Remember if you have a floating rule, or many of them, … and the Quick option is checked, they will apply … to WAN and LAN interfaces, and they will supersede … your standard rules. … Those guys are tricky, so if you make a rule … and it isn't having an effect, make sure … there isn't a floating rule getting in the way. … Two, remember rule order in Rules Two. … Firewall rules are first match wins, … so from top to bottom if you make a rule … that you expect to work and it doesn't, … it is likely because there's a higher priority rule … that is interfering. …
Author
Sean Colins
Released
8/14/2019- Designing your network
- Creating firewall schedules and rules
- Setting up a virtual IP
- Using aliases to group hosts
- Preventing local traffic from exiting to the internet
- Using Snort and other intrusion detection systems
- Prioritizing VoIP traffic
- Blocking access to specific websites
- Troubleshooting gaming performance issues
- Interpreting TCP flag definitions
Skill Level Beginner
Duration
Views
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Introduction
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Why do you need a firewall?2m 51s
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Types of firewalls4m 14s
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What it won't do2m 36s
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Plan for your firewall3m 14s
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Design your network2m 35s
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Document your design2m 59s
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1. Basic Firewall Configuration
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Understand protocols2m 47s
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Initial setup5m 27s
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Create firewall schedules2m 24s
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Create firewall rules4m 57s
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Create floating rules2m 35s
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2. Advanced Firewall Configuration
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Use ports in aliases4m 58s
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Traffic shaping3m 11s
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3. Configuration Case Studies
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Prioritizing VOIP traffic6m 35s
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Blocking access to websites4m 14s
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Intrusion protection basics7m 47s
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Understand proxies and SSL4m 24s
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4. Troubleshooting
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Firewall command-line access5m 35s
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Conclusion
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Next steps1m 7s
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Video: Firewall rule troubleshooting