I have been running into an issue with anonymous connections in IIS recently.
We have several windows 2003 server's load balanced running IIS 6.
Through an msc snap in, I can view the number of current anonymous connections. At various times throughout the day, I will notice 1 or 2 of the server's anonymous connections ramp up to 190-220 anonymous connections while the rest of the servers sit around 20-50.
About the time that this starts happening, the sites start throwing 503 errors when you try and visit them in a browser, and occasionally IIS will just get shut off completely.
Is there some setting I am missing in IIS to prevent some kind of limit on connections? Or a way to redirect traffic in the case of 503 errors?