Config works only once

Comodo Internet Security - CIS Firewall Help - CIS
#1

Hi all,

I have a problem with the Comodo Firewall v5.3 and hope that you have an idea how to fix it. I have / want to use the software DAS (Device Access Server) from Infineon Technologies AG which allows the connection to their TriCore microcontroller devices via USB. Therefore it opens a so called DAS server (TCP/IP based) that opens a port e.g. 1777 (but this varies and is not always the same port) and listens for connections on that.

First of all after I realized that this server does not work anymore after installing the firewall I tried to completely disable the Firewall and Defense+ but this does NOT help :/.

Then I used a VMWare and tried various things with the following result: Complete clean Windows → everything works fine. After installing Comodo the DAS server stops to work. Then I put the Firewall and Defense+ on training mode and opened the DAS server again. All rules were created accordingly and it worked UNTIL I did a reboot :confused:

Now the connection again does not work anymore although all automatically created rules are still present and the Firewall is still in training mode. Even when I set all the exe files related to the DAS software to “trusted application” and “installer or updater” / “system-application” in Defense+ it does not work :/.

Do you guys have any idea what else I can try? I really need this Tool running and to be honest although I am using the Comodo firewall for a few years now this really makes me think about changing to a different one if I can’t solve this as it is really important for me to use this kind software.

Many thanks and kind Regards
Stefan

Edit by EricJH: made a paragraph structure for easier access

#2

I think the problem is that the device is on the USB port here. It is treated as a “mounted device” (think USB hd’s, USB flash drives, NAS and encrypted drives/partitions) and they are not trusted by default because they cannot be continuously monitored.

After a reboot CIS won’t follow the rules made before the reboot.

The only solution I see is to delete the firewall and D+ rules before you start the program after a reboot.

Next step could be to make a policy for DAS specific that you can apply when you get an alert or add in Application Rules.

#3

Thanks EricJH for your answer. Unfortunately even deleting the rules after every reboot does not work. To be honest I don’t understand this. As I already said even disabling the firewall and defense plus does not help. Thats really strange.