Firewall leak with vpn connections [NBZ]

firewall leak with 2 vpn connections

The bug/issue

  1. What you did: disconnected second vpn connection
  2. What actually happened or you actually saw: all programs got full access to the Internet
  3. What you expected to happen or see: to get alerts when new programs are connecting to internet
  4. How you tried to fix it & what happened: reconnected the first vpn connection - all became good
  5. If it’s an application compatibility problem have you tried the application fixes here?: no
  6. Details & exact version of any application (except CIS) involved with download link: any programm
  7. Whether you can make the problem happen again, and if so precise steps to make it happen: Yes. Connect first vpn (to internet provider). connect second vpn. disconnect second vpn.
  8. Any other information (eg your guess regarding the cause, with reasons): internet activity is not logged, even with global rule “log all”
    both systems never had a virus, scanned again by kaspersky(then deleted) and comodo av
    ICS is not used, tryed both options for ICS in CIS

Your set-up

  1. CIS version, AV database version & configuration used: CIS 5.3 176757.1236 proactive security
  2. a) Have you updated (without uninstall) from CIS 3 or 4: No
    b) if so, have you tried reinstalling (if not please do)?: Yes
  3. a) Have you imported a config from a previous version of CIS: No
    b) if so, have U tried a preset config (if not please do)?: Yes
  4. Ave you made any other major changes to the default config (eg ticked ‘block all unknown requests’, other egs here.): no
  5. Defense+, Sandbox, Firewall & AV security level: D+=Safe, Sandbox=Enabled, Firewall=Safe switched to Custom, Alert Frequency Level = Very High, AV=no
  6. OS version, service pack, number of bits, UAC setting, & account type: Windows XP, SP3, 32 bit, and Windows 7 x64, UAC=yes, Admin accounts.
  7. Other security and utility software installed: No
  8. Virtual machine used: No
    tcp v6 disabled on both vpn connections and on ethernet
    first vpn type: L2TP IPsec VPN
    second: pptp

(edited, excuse me for delay.
was: "Hello, I have one vpn connection to my internet provider, wich is always on.
Sometimes I use second vpn connection to connect to my office. Firewall work well when first or both connections is active. But when I disconnect second vpn connection, all programs get full access to the Internet!!!
until reconnection of first vpn)

We would very much appreciate it if you would edit your first post to create an issue report in line with the bug forum guidelines and format here. You can copy and paste the format from this topic.

To understand the reasons why we ask you to follow these guidelines please see below.

Bugs/issues can be impossible or very time consuming to fix if developers don’t have enough information to reproduce them. Since CIS is free, development time is limited. So if you want your issue fixed, please use the format below to describe it.

To avoid clutter, issues not described in the format below your post will not be moved to the ‘moderator verified’ issues topic. This means that the developers may not look at it.

Best wishes and many thanks in anticipation


We really would very much appreciate it if you would edit your first post to create an issue report in line with the bug forum guidelines and format. You can copy and paste the format from this topic.

Thank you


Thank you for your bug report in the required format.

Moved to verified.

Thank you


things are worse:

if on second vpn connection in advanced settings of tcp protocol I uncheck “use default gateway on remote network” then CIS doesn’t work when both connections are active
(that checkbox is necessary to be turned off if I want to use internet while connected to corporate network)

The same is with two DialUps