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Re: not using debian as firewall!



On Tue, Apr 13, 1999 at 04:07:12PM -0400, Jonathan P Tomer wrote:
> > Err -- any reason you can't disable these services on Debian too?
> > Not running inetd would kill most of them.
> 
> you can disable them, but not running inetd is a bad idea since that
> provides more basic services as well (notably, i think it does ping). better
> to just remove all the lines in inetd.conf for non-internal services.

Eh?  Ping's are ICMP packets, which operate beneath the tcp layer.

>From RFC 791:

                 +------+ +-----+ +-----+     +-----+  
                 |Telnet| | FTP | | TFTP| ... | ... |  
                 +------+ +-----+ +-----+     +-----+  
                       |   |         |           |     
                      +-----+     +-----+     +-----+  
                      | TCP |     | UDP | ... | ... |  
                      +-----+     +-----+     +-----+  
                         |           |           |     
                      +--------------------------+----+
                      |    Internet Protocol & ICMP   |
                      +--------------------------+----+
                                     |                 
                        +---------------------------+  
                        |   Local Network Protocol  |  
                        +---------------------------+  

Hope that comes across ok in your mail.

For more information, go buy all the Stevens books (they're worth it)
from a bookstore.

Ciao,
-- 
David N. Welton               |   Fortune rota volvitur - descendo minoratus
davidw@prosa.it               |    alter in altum tollitur - nimis exaltatus
http://www.efn.org/~davidw    |        rex sedet in vertice - caveat ruinam!
www.debian.org - www.prosa.it |        nam sub axe legimus - Hecubam reginam


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