[ntp:hackers] Cold, dark world
David L. Mills
mills at udel.edu
Wed Jan 25 21:35:37 UTC 2006
I've been pilloried about the anal retentiveness of our campus mail
system and attachments. Read on. The combined ECE and CIS department
mail server sees about 40,000 attempted SNTP connections per day. Of
these, 10,000 result in a SMTP connection. Of these, our campus
virus/spam/attachment filters toss out all but 2500 messages. Of these,
I get 700-1000 messages to my own mailbox. My mail recipies, which are
based on subject and from fields toss out all but about fifty. Of these
I manually toss out all but a handful. Now, on the dubious assumption
one-third of those 40,000 attempts are directed at me, the eyeball
survival is about ten blinks in 12,000 each day.
I've been watching brute-force ssh attacks, which go on almost
continuously. The question is not how frequently they occur, but how
many are attacking at the same time on the same machine. We get
thousands of port indexers each day on all subnets, even on the backroom
machines over the ISDN link.
Yeah, I know some of you probably have similar experiences. It's a cold,
dark world out here.
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