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gerd_f

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Hello,

I have a communication between 2 machines:
SRC-Port: 52451
DST-Port: 49153

If I start Kerio, the communication will be lost. I have no traffic rule which blocks this port: Service = any : allow

Is there an other functionality in Kerio control which could block my communication? All settings ar on default value.

Best Regards
Gerd

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gerd_f

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Here are some more Information:
Source Machine which Kerio is running and which the connection is established to destianation machine:
IP: 192.168.1.1


Destination machine:
IP: 192.168.1.2



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tauseef-it

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try the following,
source: any,
destination: firewall
service: port 52451, 49153 (whether TCP or UDP)
action: allow
translation: put 192.168.1.2 in destination NAT

hope it helps...
  •  
ICT and Me

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@Gerd_f,

Do you have more information? Because what kind of Control (Windows/Linux). Where are the systems located? Same location/lan or different. etc...
And the IP's are they indeed internal IP numbers?
So need more information. Like a drawing of the network will also help.

ICT and Me
Carlo Turk
The Netherlands
www.ictandme.nl
  •  
mlee (Kerio)

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Just tested with Kerio Control 8.1.0 Virtual Appliance with Netcat on TCP 49153 with your described environment and it works (There are lots of rules on my firewall)

On workstation
-------------------------------
ubuntu:~$ nc -vv -l 49153
Connection from 172.20.0.254 port 49153 [tcp/*] accepted
hello

On Kerio Control
-------------------------------
~ # nc -p 52451 172.20.0.100 49153
hello

A review of the traffic rule would be recommended.

M.

PTSD. BP. OCD. ASPD. BPD. Certified.
  •  
gerd_f

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These are 2 Windows Machines, its an OPC connection (OLE for process control)

I found out with the Kerio Debugger, that the OPC Server does not Support 3Way Handshake.
After disabling 3WayHandshke in Kerio it was working but after a reboot from the Machine which Kerio is installed, the communication is blocked again. Then I restart Kerio and it works again.

I have no idee what could be the problem, the debugger in Kerio (Filter:Show packets which are dropped for som reason)does not display dropped packages.
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