adm and address blocking

[Thomas M. Albright]

On Tue, 16 Sep 2003, Travis Roy wrote:

> > I find amusing that the adm account on this machine has a mailbox full
> > of spam. Amusing tho it may be, how can I stop it from happening?
> 
> You can use some kind of spam blocking software. Anything from spamassassin
> to a white-list style.
> 
What if I chmod /var/spool/mail/adm to 0000?

> > Additionally, i've been getting attacked from ipt.aol.com. They own the
> > address range from 172.128.0.0 - 172.211.255.255 What would be the
> > netmask to block a range like that? 172.128.0.0/8 would block the entire
> > class B, right?
> 
> While blocking a whole range is what a lot of people I know do, I wouldn't,
> even more so if it's AOL. Eventually you will know somebody that uses AOL,
> or if you have users on your system they will know somebody that uses AOL.
> 
This isn't about spam, this is attacks trying to break in. (Usually
through port 1080.) Nor is this going to block all (or even most) of
aol. This is just to keep *.ipt.aol.com away from me. Note: just ipt,
not mx or any other aol thing.

Spam I can filter, attacks I just kill.

-- 
TARogue (Linux user number 234357)
 There are 10^11 stars in the galaxy. That used to be a huge
 number. But it's only a hundred billion. It's less than the
 national deficit! We used to call them astronomical numbers.
 Now we should call them economical numbers.
 -Richard Feynman, physicist, Nobel laureate (1918-1988)