similar to: SPAM Filters -- take 2

John, I''m taking the liberty of copying the Shorwall Development list since I believe that these issues will be of interest. On Tue, 6 Aug 2002, Links at Momsview wrote: > Tom, > I''m not sure if you ever saw this document but it describes some of the > reasons you are seeing strange packets > after setting up NEW not SYN >

Like all of you, I''m concerned about the increasing volume of Unsolicited= =20 Commercial Email (UCE or SPAM). I am therefore sympathetic with those of = you=20 who are installing SPAM filters on your mail servers. A couple of recent=20 incidents involving misconfigured filters have prompted me to send this n= ote=20 to spell out what I will do when these filters bounce or reject

Thanks to a Shorewall user in Paris, there is now a mirror in France. http://france.shorwall.net -Tom -- Tom Eastep \ Shorewall - iptables made easy AIM: tmeastep \ http://www.shorewall.net ICQ: #60745924 \ teastep@shorewall.net

I have purchased a license for Vexira MailArmor (an antivirus product) and the good news is that it is installed and working at shorewall.net. The bad news is that I have yet to get Vexira running together with SpamAssassin :-( As things currently stand, list posts will be protected from viruses but may contain Spam. I''ll continue to work to correct this situation. -Tom -- Tom Eastep

This is becoming a FAQ and should probably be added to the docs. Thanks, -Tom -- Tom Eastep \ Shorewall - iptables made easy AIM: tmeastep \ http://www.shorewall.net ICQ: #60745924 \ teastep@shorewall.net ---------- Forwarded message ---------- Date: Sun, 28 Apr 2002 16:09:01 -0700 (Pacific Daylight Time) From: Tom Eastep <teastep@shorewall.net> To: Carl Spelkens

---------- Forwarded Message ---------- Subject: Re: [Shorewall-users] strange UDP scan results on a Shorewall=20 firewall Date: Sun, 3 Mar 2002 08:33:20 -0800 From: Tom Eastep <teastep@shorewall.net> To: "Scott Duncan" <sduncan@cytechconsult.com> On Saturday 02 March 2002 04:30 am, Scott Duncan wrote: > Yes, the net->all policy is the same on all three (REJECT log

I have now configured Postfix to filter all email sent to shorewall.net with SpamAssassin. I have also configured GNU Mailman so that any list email that appears to be Spam will be held for my approval. Hopefully, this will prevent Spam from becoming a problem on our lists. -Tom -- Tom Eastep \ Shorewall - iptables made easy AIM: tmeastep \ http://www.shorewall.net ICQ: #60745924 \

It appears that MailMan doesn''t propagate changes to the default spam filtration settings to existing mailing lists -- these only apply to new lists :-( Since I tested using a newly-created throw-away test list, spam filtering worked in my test but not on the Shorewall lists. I believe that I''ve correctly modified the lists to correctly divert Spam -- we''ll see.

Shorewall 1.3.9 is available. In this release: 1. DNS Names are now allowed in Shorewall config files (I still recommend against using them however). 2. The connection SOURCE may now be qualified by both interface and IP address in a Shorewall rule. 3. Shorewall startup is now disabled after initial installation until the file /etc/shorewall/startup_disabled is removed. 4. The

Let me know if there are any problems. -Tom -- Tom Eastep \ Shorewall - iptables made easy AIM: tmeastep \ http://www.shorewall.net ICQ: #60745924 \ teastep@shorewall.net

Rafa³ Dutko has just discovered a potentially serious bug in version 1.3.0 and 1.3.1. In both versions, where an interface option appears on multiple interfaces, the option may only be applied to the first interface on which it appears. A corrected firewall script for 1.3.1 is available at: http://www.shorewall.net/pub/shorewall/errata/1.3.1/firewall and

Thanks to Stefan Mohr, a Shorewall 1.2.11 RPM package for SuSE is now available. See http://www.shorewall.net. Thanks Stefan!! -Tom -- Tom Eastep \ Shorewall - iptables made easy AIM: tmeastep \ http://www.shorewall.net ICQ: #60745924 \ teastep@shorewall.net

Shorewall 1.3.4 is available: 1. A new /etc/shorewall/routestopped file has been added. This file is intended to eventually replace the routestopped option in the /etc/shorewall/interface and /etc/ shorewall/hosts files. This new file makes remote firewall administration easier by allowing any IP or subnet to be enabled while Shorewall is stopped. 2. An /etc/shorewall/stopped

I have implemented the ability to specify ''all'' in the SOURCE and DESTINATION columns of the rules file and I''m not sure I like the result. The code is in CVS if any of you are interested in giving it a try. If you do try it, please let me know what you think. If you specify ''all'' in those columns it must not be qualified (may not be followed by

The ''firewall'' and ''functions'' file in CVS together produce a 30%+ speedup of ''shorewall restart'' on my firewall when compared to 1.3.11a. Please test with these files -- I don''t anticipate making any more performance changes for 1.3.12 and I want to be sure that I didn''t break anything. -Tom -- Tom Eastep \ Shorewall

The 1.2 firewall contains messy logic to support the old sample configurations in that any rule that contains "none" in any of its columns is ignored. I''m considering removing that messiness in 1.3 and seek the opinion of the list. Thanks, -Tom -- Tom Eastep \ Shorewall - iptables made easy AIM: tmeastep \ http://www.shorewall.net ICQ: #60745924 \ teastep@shorewall.net

Shorewall 1.2.4 will have the following changes: a) ''#'' comments now allowed at end-of-line in all config files. b) Firewall zone may be renamed c) Protection against concurrent state-changing operations (start, stop, restart, refresh, clear) d) ''shorewall start'' no longer fails if ''detect'' is specified for an interface with netmask

Lorenzo Marignoni reports that: o Shorewall 1.2.10 is in the Debian Testing Branch o Shorewall 1.2.11 is in the Debian Unstable Branch Thanks, Lorenzo! -- Tom Eastep \ Shorewall - iptables made easy AIM: tmeastep \ http://www.shorewall.net ICQ: #60745924 \ teastep@shorewall.net

In this release: 1. The ''try'' command now accepts an optional timeout. If the timeout is given in the command, the standard configuration will automatically be restarted after the new configuration has been running for that length of time. This prevents a remote admin from being locked out of the firewall in the case where the new configuration starts but prevents

Andy Wiggin has contribued a Python program that reads http://www.iana.org/assignments/ipv4-address-space and creates a list of reserved subnets suitable for inclusion in /etc/shorewall/rfc1918. The list produced by Andy''s program will be included in the rfc1918 file included in version 1.3.2 (it''s available now from CVS). Thanks Andy! -Tom -- Tom Eastep \ Shorewall -