Bug 128120

Summary:	Firewall 'enabled' but all iptables chains default to ACCEPT
Product:	[Fedora] Fedora	Reporter:	Ben Smith <fedora>
Component:	redhat-config-securitylevel	Assignee:	Brent Fox <bfox>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	rawhide	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2004-07-31 03:05:50 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Ben Smith 2004-07-18 19:08:05 UTC

Description of problem: 
FC3 Test 1, fresh install.  Selected 'enabled' for firewall settings 
during install, with no exceptions.  /etc/sysconfig/iptables and 
system-config-securitylevel show that default rules for all chains 
is ACCEPT. 
 
Version-Release number of selected component (if applicable): 
1.3.13-3 
 
Additional info: 
selinux was also selected as 'enabled' during install.

Comment 1 Ben Smith 2004-07-27 03:23:51 UTC

OK, it appears this is the same as all Fedora versions since FC1.  
It appears the default is a firewall that rejects anything under 
port 1024 and a few other things like X11, nfs and xfs.   
 
So perhaps it isn't really a concern, but it is unexpected.  Maybe 
putting a description of the pitfalls of such a setup in the 
installer would be helpful. 
 
What would be the downside of a conntrack type firewall instead?

Comment 2 Ben Smith 2004-07-28 07:18:58 UTC

Heh, well sorry, but I've been looking at about three different boxes,
one of which was upgraded.  I see now the default since FC1 *is* a
conntrack-type firewall, but the /etc/sysconfig/iptables file is not
overwritten during upgrades, which caused my confusion.  I also see
that any request not handled by the rules is REJECTed, so the default
settings are never used.