I am in a hotel with Wi-Fi. For the last three+ days internet service has been fine. But for the last couple hours it has ranged at various times from slower, to VERY slow, to virtually unusable.
Windows 7 connection diagnostics pointed me to NIS Firewall activities. I see that during the slow period I have had a continual slew of the following entries:
INFO: Rule "Default Block SSDP" rejected UDP(17) traffic with (172.20.#.### Port (#####))
INFO: Rule "Default Block LLMNR" rejected UDP(17) traffic with (172.20.#.### Port (#####))
INFO: Rule "Default Block All Inbound Windows Services (Public Networks)" rejected UDP(17) traffic wiith (172.20.#.### Port (#####))
(### represents number of digits; the actual values vary with each entry.)
I assume 172.20... is the hotel's network. In fact, ipconfig says my IPV4 address is 172.20.0.92 and the gateway address is 172.20.0.1.
My Firewall Activities history goes back for about two weeks, but shows no entries of this type until a few hours ago when the problems started. (Or is it possible NIS deletes certain types of firewall history entries on an accelerated schedule, while leaving others there longer???)
So my questions are: (1) what's going on, including why is this suddenly happening now, but not earlier in my stay? and (2) What might be a safe remedy?
NIS 22.5.2.15. I have of course tried rebooting.
EDIT: I have now disabled those three rules to test for improvement. But it turns out that I am in a situation where, whenever a rule is disabled, traffic (including some TCP now) is instead restricted by some other rule that wasn't showing up before. So my connections are still being slowed down by the firewall (perhaps somewhat improved, but not nearly as fast as everything had been until tonight). Also, I wanted to confirm that I have had the hotel network registered all along as Public in NIS.