A good book on TCP/IP overall is 'TCP/IP Illustrated by W. Richard Stevens".
This will explain TCP/IP from lower through to higher layers.
Amazon has information at
http://www.amazon.com/exec/obidos/ASIN/0201633469/o/qid=944602250/sr=2-1/103
-3658892-8799861
Adrian
-----Original Message-----
From: Michael J. McGillick [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, 8 December 1999 2:26 AM
To: [EMAIL PROTECTED]
Cc: recipient.list.not.shown
Subject: TCP/IP information
Morning Folks:
I'm working on documenting my ipchains firewall script, and want to be as
detiled as possible. I tend to forget things, and want to be able to look
back at my script and understand right away what it does. What I'm
looking for any documents, books, etc that actually explain, in detail,
what happens when different types of connections come in and hit my
firewall.
For example, if I want to allow telnet to my machine, I know to open port
23, but I want to know exactly what happens throughout the entire
handshaking process, acknowledgement, etc. I've heard mention of ACk and
NAK, but I want to understand exactly what this means. Also, I'm looking
for information that explains, in detail, what each of the services
are. What is AUTH, for example, and when and why would it need to be open
on the firewall, etc. Those types of things.
Any recommendations on this material would be greatly appreciated. I've
gotten a lot of useful information from this list, and I want to do my
part and give a little back. After I finish documenting my script, I will
be happy to let anyone who wants a copy of it have it. I want it to be a
learning tool as well as a solid security measure.
I offered this script before, but noticed that I got several emails back
from people asking questions that I didn't have the answers to
myself. Upon further examination, I realized I now had a security measure
in place that worked, for the most part, but I didn't really know anything
about it.
Again, any pointers, info, etc. would really be appreciated.
- Mike
--
To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe"
as the Subject.
--
To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe"
as the Subject.
