Bug 32897

Summary:	install with medium firewall accepts all packets
Product:	[Retired] Red Hat Linux	Reporter:	John Keener <john>
Component:	anaconda	Assignee:	Michael Fulbright <msf>
Status:	CLOSED NOTABUG	QA Contact:	Brock Organ <borgan>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	7.1	CC:	notting
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2001-03-24 22:45:24 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 John Keener 2001-03-23 21:23:50 UTC

From Bugzilla Helper:
User-Agent: Mozilla/4.73 [en] (X11; U; Linux 2.2.16-3 i686)


On installation I selected the "medium" firewall option, and allowed
incoming ssh.  I have done this with both the text and the graphic
installation.  The chains that get setup are (ipchains -L -n):
Chain input (policy ACCEPT):
target     prot opt     source                destination           ports
ACCEPT     udp  ------  199.99.226.3         0.0.0.0/0             53 ->  
*
ACCEPT     udp  ------  199.99.226.3         0.0.0.0/0             53 ->  
*
ACCEPT     udp  ------  199.99.226.3         0.0.0.0/0             53 ->  
*
ACCEPT     tcp  -y----  0.0.0.0/0            0.0.0.0/0             * ->  
22
ACCEPT     all  ------  0.0.0.0/0            0.0.0.0/0             n/a
ACCEPT     all  ------  0.0.0.0/0            0.0.0.0/0             n/a
DENY       tcp  -y----  0.0.0.0/0            0.0.0.0/0             * ->  
0:1023
DENY       tcp  -y----  0.0.0.0/0            0.0.0.0/0             * ->  
2049
DENY       udp  ------  0.0.0.0/0            0.0.0.0/0             * ->  
0:1023
DENY       udp  ------  0.0.0.0/0            0.0.0.0/0             * ->  
2049
DENY       tcp  -y----  0.0.0.0/0            0.0.0.0/0             * ->  
6000:6
009
DENY       tcp  -y----  0.0.0.0/0            0.0.0.0/0             * ->  
7100
Chain forward (policy ACCEPT):
Chain output (policy ACCEPT):

Note the 'ACCEPT all 0.0.0.0 0.0.0.0' lines *before* any of the deny
items.  This accepts all incoming packets


Reproducible: Always
Steps to Reproduce:
1.perform install
2.choose "medium" firewall
3.allow ssh connects
(This is the only senario I have tested)
	

Actual Results:  see description.

Expected Results:  The chains should not be accepting all packets.  At a
minimut the 'ACCEPT all' lines should not be there.

Comment 1 Bill Nottingham 2001-03-23 22:50:38 UTC

What does your /etc/resolv.conf look like?

Comment 2 John Keener 2001-03-24 22:45:20 UTC

--------resolv.conf------------
nameserver 199.99.226.3
-----end resolv.conf

Comment 3 John Keener 2001-03-24 23:10:07 UTC

ipchains -L -n          hides one important piece of information -- the
interface.  The ACCEPT lines are actually limited to the lo and eth1 interfaces:

... 
   6   420 ACCEPT     all  ------ 0xFF 0x00  lo    0.0.0.0/0           
0.0.0.0/0             n/a
16554 2483K ACCEPT     all  ------ 0xFF 0x00  eth1  0.0.0.0/0           
0.0.0.0/0             n/a
...