You can check out the course web page from 1999 to see exactly how the two courses differ. CS220r students will benefit from taking 6.875, because the two courses overlap mainly in their introductory material. You are at least as likely in this course to have a problem set about SYN flooding as about subgroups. Check out Fall 1999 web page for more details. For more information, check his web page.
Attendance is open to all unless specified.
Check the CIS Seminar Web Page for info on how to get on the mailing list. You should check out the ASRG web page. If you're interested in issues of anonymity and file storage, you may want to check out the Free Haven Project . Talk to David if you're interested in learning more.