Googling, I just found that there seems to be problem with using Winpcap and Kerio Firewall and in fact, terminating Kerio has "solved" the problem for me on both my systems. Is there any fix to use both Kerio and Winpcap because I do not want to switch to another personal firewall? Or is there a recommendation for a personal firewall product that has no known compatibility issues?
<br><br>Thanks,<br>Marc<br><br><br><div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Dear all,<br><br>I'm having a strange problem that I believe is related to WinPcap because it only happens with the two WinPcap-based applications I use (Wireshark and Cain).
<br><br>I use the latest Wireshark and Cain versions with Winpcap
4.0.1 under Windows XP with all latest patches and drivers. The problem occurs on both my Laptops, a Thinkpad T40p and a T60. It happens with both the wired and wireless interfaces. The problem did not happen until a few weeks ago, though I cannot tell exactly when it started or what (
e.g. software upgrades) may have been the cause.<br><br>The symtomps are as follows: without running Wireshark/Cain, networking works fine. When starting Wireshark or Cain, it still works. When starting sniffing, TCP-based applications no longer work. With Wireshark, I can see that the 3-way handshake is recorded (so handshaking seems to work), but no data is exchanged afterwards and the TCP connection "hangs". Other protocols still seem to work,
e.g. name resolutions (UDP-based) work flawlessly. Even after terminating Wireshark or Cain, TCP remains "broken" and only rebooting helps.<br><br>Does anyone have an idea what the reason for this problem may be?
<br><br>Thanks for any help,<br>Marc<br>
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