So I was having some issues, a possible conflict between Avast and Comodo free F Wall, so I removed it and am using Windows F Wall now. Is that good enough or can you recommend another one, better then Windows, that has a good record of working with Avast Free?
I’m on a modem without a router, Win XP SP III.
appreciate any advice about this 
Do I need a firewall, and if so, what kind?
http://ask-leo.com/do_i_need_a_firewall_and_if_so_what_kind.html
Is an outbound firewall needed?
http://ask-leo.com/is_an_outbound_firewall_needed.html
for reasons you can read there i am satisfied with winfirewall…and my router firewall
Before purchasing AIS, I used Online Armor Free on my WinXP Pro SP3 machine. I was quite impressed with it, and it does quite well in the various firewall reviews.
http://www.online-armor.com/products-online-armor-free.php
Use the download link at the bottom of the page below to avoid CNet add-ons.
http://www.online-armor.com/downloads.php
A comparison between the paid and free versions of Online Armor Firewall. Sadly, the download link on this page is CNet.
http://www.online-armor.com/free-firewall-protection-software.html
The combination of this firewall and Avast Free gives a great deal of protection. I used Sygate Firewall for quite a while, but it wasn’t updated after Symantec bought it.
This might help http://www.techsupportalert.com/best-free-firewall.htm
http://www.filehippo.com/download_outpost_firewall/
http://www.softpedia.com/get/Security/Firewall/Privatefirewall.shtml
http://www.softpedia.com/get/Security/Firewall/Online-Armor-Free.shtml
http://www.softpedia.com/get/Security/Firewall/Comodo-Personal-Firewall.shtml
Easy to follow instructions for Comodo Firewall
http://www.knightwithapc.com/2011/11/download-comodo-firewall/
OK that will keep me busy reading
Well somehow I found the Shields Up website and passed the test , so maybe the win firewall is fine for me.
Did you have the Behavior blocker and Auto-sandbox Did you have the Behavior blocker and Auto-sandbox unknown files enabled incomodo Firewall, This conflicts with avasts behavior shield.unknown files enabled incomodo Firewall, This conflicts with avasts behavior shield.
Oh I forget now, I removed Comodo anyway ZB.
yes,the comodo has an architecture different from other solutions
1.Firewall: Apply a security policy to a particular control point network. Its function is to regulate the route data traffic between different networks and prevent the transmission and / or reception of harmful or unauthorized access from one network to another.
2.HIPS: Monitor a try each activity and program (depending on configuration) prompts the user for action or respond based on predefined criteria. Moreover, the behavior blockers and monitor the behavior of the entire program listing. When a collection of tips the scale behavior, the behavior blocker vai (depending on configuration) or alert the user to take action against the entire program based on predefined criteria.
“yes,the comodo has an architecture different from other solutions”
which brings me back to my original question, which FWall works best with Avast Free?
Then, how would that one be better protection then Win FWall?
yes it is recommended to disable the detector behavior so that there is risk of conflict.
Online Armor Firewall offers protection similar to that offered by Comodo Firewall. Therefore, it is excellent.
• To learn what each option represents the detector behavior, with the word itself Comodo:
»Limited Mode: In this mode only a very restricted and selected system can be accessed by the application. When application is not allow the execution of more than 10 cases at a time and these are run without administrator privileges;
»Restricted Mode: In this mode the application is allowed access to only very few system resources. When application is not allow the execution of more than 10 cases at a time and they are executed in a very limited access;
Note: some applications such as computer games may not work properly when this option selected.
"Untrusted Mode: In this mode the application does not allow access to any part of the system. When application is not allow the execution of more than 10 cases at a time and they are executed in a very limited access;
Note: Some applications requesting user intervention may not work properly when this option selected.
For those users most at risk, I recommend the adoption of the so unreliable.
I have Comodo FW w/D+ and have never, ever had any conflicts with avast.
Comodo has avast in it’s internal whitelist.
If the user needs to, they can make exclusions in Comodo FW.
If anything Comodo FW behavior blocker kicks in before the avast autosandbox. 8)
Comodo used to work quite well with avast until Version 6 was released. I believe private firewall would be an excellent choice.