@article{SMBlog:2010-11-11,
	author = {Steven M. Bellovin},
	title = {Firewall Configuration Study},
	date = {2010-11-11},
	year = {2010},
	month = {November 11,},
	journal = {SMBlog: Steve Bellovin's Blog (blog)},
	url = {https://www.cs.columbia.edu/~smb/blog/2010-11/2010-11-11.html},
}