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 61 
 on: June 24, 2021, 05:07:51 05:07 
Started by metal - Last post by danymogh
I was unable to activate version 3.01. Who managed to accomplish this? Please share. Sad

my fix , like i said , should work for all 3.xx version and i checked for 3.01 and it still works.
do a clean install and it should fix any problem

 62 
 on: June 24, 2021, 03:15:08 03:15 
Started by Sideshow Bob - Last post by dikris
I've encountered this fairly recently with a couple of applications. One even uses dns queries to exfiltrate license data in parallel with the other methods (https and direct SMTP). They *really* want to know who is using their software!

I now run all my "applications" in virtual machines which are not routed to the outside world and use a separate dnsmasq instance for dns which logs all requests but forwards only local to my network.
This allows all the VMs access to the file servers, printers and IoT garbage, but prevents anything leaking outside and makes it easy to mitm or selectively permit/log anything that needs analysis.

As a bonus I'm also not worried about using Windows in the VMs because they can't phone home.
I've encountered this fairly recently with a couple of applications. One even uses dns queries to exfiltrate license data in parallel with the other methods (https and direct SMTP). They *really* want to know who is using their software!

I now run all my "applications" in virtual machines which are not routed to the outside world and use a separate dnsmasq instance for dns which logs all requests but forwards only local to my network.
This allows all the VMs access to the file servers, printers and IoT garbage, but prevents anything leaking outside and makes it easy to mitm or selectively permit/log anything that needs analysis.

As a bonus I'm also not worried about using Windows in the VMs because they can't phone home.

Thank you for the suggestion.
What about having the network adapter of the VM set to "host-only". What would be the disadvantages of this method compared with dnsmasq you are using (which I am not familiar with)

 63 
 on: June 24, 2021, 12:49:27 00:49 
Started by kripton2035 - Last post by optikon
Hi there,
I've got the pcb and tested them.
but I have some spurious oscillation at the output of the opamp
and I'm struggling to find the reason for some times now...
as I have changed some parts of the design, it may come from that, but I have to investigate.
more to come soon, thanks for your patience.

Did you want some help troubleshooting this issue? Post a pic of the spurious oscillations and more details..

 64 
 on: June 23, 2021, 10:49:52 22:49 
Started by kripton2035 - Last post by zelea2
If you don't want to build your own you can already buy such a milliohmmeter  with 4 wire probes, Alu case and LiIon battery for 60$ here:
https://www.aliexpress.com/item/1005002597400113.html

 65 
 on: June 23, 2021, 09:42:43 21:42 
Started by Sideshow Bob - Last post by zelea2
When using CAD programs I'm collecting the requests to the outside and then I place the host names in my /etc/hosts file
Some of these hostnames are deliberately encrypted in the executables so you can't easily patch them.
-----------------------------------------------------------
0.0.0.0 srv1.updates.synopsys.com
0.0.0.0 srv2.updates.synopsys.com
0.0.0.0 srv3.updates.synopsys.com
0.0.0.0 srv1.sw.synopsys.com
0.0.0.0 srv2.sw.synopsys.com
0.0.0.0 srv3.sw.synopsys.com
0.0.0.0 authnz-prod.wsroute.mathworks.com
0.0.0.0 notifications.wsroute.mathworks.com
0.0.0.0 notifications.mathworks.com
0.0.0.0 services.mathworks.com
0.0.0.0 authnz.mathworks.com
0.0.0.0 edasoftwareupdate2.software.keysight.com
0.0.0.0 update1.cadence.com
0.0.0.0 update2.cadence.com
0.0.0.0 swupdate.aldec.com
------------------------------------------------------------
Here's a trick to run applications in Linux without internet access:
Make a new group:
Quote
addgroup --system no-internet
Then put this in your firewall and adjust the IP ranges accordingly :
Quote
iptables -A OUTPUT -m owner --gid-owner no-internet -d 127.0.0.1/8 -j ACCEPT
iptables -A OUTPUT -m owner --gid-owner no-internet -d 192.168.1.0/24 -j ACCEPT
iptables -A OUTPUT -m owner --gid-owner no-internet -d 10.8.0.0/24 -j ACCEPT
iptables -A OUTPUT -m owner --gid-owner no-internet -j REJECT
Then if it's a single executable you can do
Quote
chgrp no-internet cad_executable
chmod 02755 cad_executable # to make it setgid
When you have multiple executable and shell scripts just launch then with sudo.
First place this (replace 'user' with your username) in your /etc/sudoers file so you won't need to enter your password every time
Quote
user    ALL =(user:no-internet) NOPASSWD: ALL
Then simply start your CAD like this:
Quote
sudo -g no-internet start_cad

 66 
 on: June 23, 2021, 08:08:22 20:08 
Started by metal - Last post by Top
My fix seems to work okay on v3.01 too.

Tell me how to reproduce this issue.

 67 
 on: June 23, 2021, 06:43:56 18:43 
Started by metal - Last post by Catcatcat
I was unable to activate version 3.01. Who managed to accomplish this? Please share. Sad

 68 
 on: June 23, 2021, 06:52:21 06:52 
Started by Sideshow Bob - Last post by engineer
Actually, Synopsys and Cadence do the same thing as well.

 69 
 on: June 21, 2021, 06:05:09 18:05 
Started by kripton2035 - Last post by kripton2035
Hi there,
I've got the pcb and tested them.
but I have some spurious oscillation at the output of the opamp
and I'm struggling to find the reason for some times now...
as I have changed some parts of the design, it may come from that, but I have to investigate.
more to come soon, thanks for your patience.

 70 
 on: June 21, 2021, 03:47:35 15:47 
Started by kripton2035 - Last post by kreutz
prototype pcb have been ordered. now wait 2 weeks to get them and test them.

Please, share the results.
Regards,
kreutz

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