Re: [LI] Frequently Asked Questions

["Suresh Ramasubramanian" <Suresh@xxxxxxxxxxx>]

On 19 Nov 99, at 23:07, thus spake Linux India Digest:

> Details about various ISPs in India, and their idiosyncrasies.

Might get you sued for libel :-)  At least VSNL is a bunch of heavy 
handed $$%$% who don't like criticism.

> Firewalling fundamentals

Also - how to secure your server.  PCQ said a few things in this 
month's issue - here's my addition to the list.

1. Disable finger and traceroute outside your lan - spammers and 
hackers just love these two commands.

2. Give pointers on how to close a server against relaying - to 
prevent it from being relay raped by spammers (TIFR, IGCAR, 
BARC, NIC Karnataka, VSNL Cal, B'lore, ... the list goes on).

Pointers re this -

RFC 2505 (a BCP / best current practices RFC on securing your mta 
against spammers) - ftp.sunet.se or http://www.faqs.org/rfc etc etc.

http://www.orbs.org/otherresources.cgi

http://maps.vix.com/tsi

Basic thing - anyone running sendmail - upgrade to 8.9.3 asap and 
shut off relaying.

Feel free to contact me on this - 
or post to the spam-l list <spam-l@xxxxxxxxxxxxxxxxxxxx> - 
subscribe by mailing listserv@xxxxxxxxxxxxxxxxxxxx with the subject 
"subscribe spam-l" without quotes and reply to the conf msg.  

NOTE: For your own sake, please do read the spam-l list FAQ at 
<http://www.claws-and-paws.com/spam-l> for God's sake before 
posting.

(they have some extremely strict rules + lots of unix gurus hang out 
there - one such being John Levine, author of the Internet for 
Dummies, Unix for Dummies and -coming up soon- "Internet 
Secrets")

hth
--s


Suresh Ramasubramanian
106D, Aditya Enclave, Ameerpet, Hyderabad 500038, India.
Phone: +(91-40)3736553/3745398 | eFax: +(1-603)590-5437
Suresh@xxxxxxxxxxx | Suresh@xxxxxxxx
http://www.kcircle.com | http://www.angen.net/~pegasus/
    Do you dream in colors or do you discriminate ?

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