I've been running an XGS 126 at my small company for about six months now. I'm still pretty new to this level of network security, so I wanted to share my experience.
The IPS has flagged two incidents that seemed legit: one was a crypto mining attempt from a compromised client, and the other looked like a credential stuffing attack on our web server. That felt good! But for every real alert, there are *so many* blocked events that are just... noise. Mostly web crawlers and weird scan attempts on non-standard ports. It makes the logs pretty overwhelming to sift through.
For those of you more experienced, is this normal? Should I be tuning the IPS policies more aggressively, or is this just the nature of having it turned on? Also, any tips for making the logging more manageable for a beginner?
Oh yeah, that's the IPS life. You caught two real ones in six months? That's a solid win, actually. It pays for itself right there with that crypto miner alone.
The noise is totally normal. The internet is a dirty, dusty attic and everything's banging on your door. For logging, see if your XGS can send logs to a separate system like a Graylog instance. Then you can filter out the known-bad IPs (like those web crawlers you don't want) and make dashboards for the scary stuff. Makes a huge difference.
Tuning is good, but go slow. Start by creating exceptions for the specific, consistent noise you see, rather than turning off whole signature categories. You don't want to get too clever and miss the next real one sneaking through.
Totally normal. Those two catches mean it's working.
For the log noise, start by geoblocking. If you don't have business in certain regions, block them outright at the firewall level. That cuts a huge chunk of garbage scans right out.
On the XGS, you can also create specific IPS exceptions for the high-volume, low-risk noise. Like if you're seeing endless alerts for a specific scanner on UDP 1434, create an exclude rule for that signature from your WAN IPs. Don't disable the whole category.
—cp