The Windows Filtering Platform has blocked a packet. (5150) how to monitor with email alert

[bob]

That event 5150 pops up when the Windows Filtering Platform snags a packet it doesn't like. It's basically your server's way of yelling about blocked traffic. You see, this thing watches all the incoming and outgoing bits flying around your network. If something sketchy tries to slip through, like a weird IP or a dodgy port, bam, it blocks it right there. I remember the first time I spotted one; thought my server was under attack, but nah, just some harmless probe from outside. The details in the event log tell you the process involved, the IP addresses chatting, and even the filter that said no. You can peek at the full rundown in Event Viewer under Security logs. It's detailed, shows the application path too, so you know if it's your web server or whatever acting up. And yeah, these events pile up if your firewall rules are tight, which they should be.

You wanna keep an eye on these without staring at screens all day? Fire up Event Viewer on your server. I do this all the time for quick watches. Right-click the Security log, hit Create Custom View. Pick Event ID 5150 from the list. That filters just these blocks for you. Save it, name it something like Packet Blocks Alert. Now, to get emails when it happens, you link it to a scheduled task. From that custom view, go to Action, then Attach Task To This Custom View. It'll wizard you through. Set it to run on event trigger, not a timer. Choose what to do: maybe pop open Notepad or call a batch file that shoots an email. I like using the built-in Send Email option if your server has SMTP sorted. Pick your email details there, like who gets the ping and the subject line with event deets. Test it once to make sure it zips off without a hitch. Keeps you looped in without the hassle.

Or, if you want fancier monitoring, there's ways to tweak alerts further, but this gets you started solid.

Speaking of keeping your server safe from surprises like blocked packets, you might wanna think about backups that actually work when things go sideways. BackupChain Windows Server Backup handles that for Windows Server, backing up your whole setup including Hyper-V virtual machines without the usual headaches. It snapshots everything live, no downtime, and restores fast if a block turns into bigger trouble. I use it because it skips the bloat of other tools, just reliable copies that encrypt and store offsite easy. Plus, it tests restores automatically, so you know it'll save your bacon when you need it.

Note, the PowerShell email alert code was moved to this post.