Part of being a web server administrator is keeping your firewalls properly configured and troubleshooting to track down the necessary ports and IPs that have legitimate reasons to pass through your firewall. It’s not unusual to run into difficulty trying to find out which ports are required by a particular application. Sometimes you can determine which ports to allow by reading the specifications of the application. However, there are times when documentation is limited or you deal with a custom app.

This is week 40 of a 52 week series for the web pro. You can view past and future weeks in the section below.

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About Scott Forsyth

Senior Systems Engineer at ORCS Web, Inc (www.orcsweb.com) and co-founder of Vaasnet (www.vaasnet.com). Microsoft MVP for IIS. ASPInsider. Strengths are IIS, ASP.NET, DNS, Windows Server, and Hyper-V. This author has published 50 articles on DotNetSlackers. View other articles or the complete profile here.