RE: TFTP through firewall

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1 total messages Started by Michael Meyer LJO Wed, 15 Apr 1998 00:00

#146

Author: Michael Meyer LJO
Date: Wed, 15 Apr 1998 00:00

36 lines
1785 bytes

Dear Sir:
	Read Building Internet Firewalls by Chapman & Zwicky, O'Reilly &
Assoc., 
pp. 234-235. http://www.ora.com/catalog/fire/
<http://www.ora.com/catalog/fire/> 

Proxying characteristics of TFTP
TFTP does not lend itself well to proxying. Because TFTP clients are often
implemented in hardware, with no users involved, neither modified clients
nor modified user procedures are generally implementable. A transparent
proxy could easily support TFTP, providing the same extremely minimal amount
of security achievable if you allow TFTP through packet filters.

Summary of TFTP recommendations
*	Do NOT allow TFTP across your firewall.

Sincerely,
Michael C. Meyer
AltaVista Technical Support
altavista-support@digital.com <mailto:altavista-security@digital.com> 
http://support.altavista-software.com/
<http://support.altavista-software.com/> 
Use web site for immediate partner support.
[mailto:Rick_McMaster@freddiemac.com]
<mailto:[mailto:Rick_McMaster@freddiemac.com]> 
Sent:	Tuesday, April 07, 1998 7:21 AM
To:	firewalls@GreatCircle.COM <mailto:firewalls@GreatCircle.COM> 
Subject:	TFTP with Raptor



Does anyone have any information on how to set up TFTP with a Raptor
firewall?
Thanks
Rick

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