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| Firewall Rules for MQ |
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| SAFraser |
 Posted: Fri Oct 03, 2008 8:47 am Post subject: Re: Firewall Rules for MQ |
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Shaman
Joined: 22 Oct 2003
Posts: 742
Location: Austin, Texas, USA
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| atheek wrote: |
The tcp/ip socket connections for client connections originate from the client server. The only firewall rule which you may have to configure is:
Source IP : Client IP
Source Port : * ( any port randomly allocated by the tcp/ip stack of the client system)
to
Detsination IP : MQ Server IP
Destination Port : 1414
You need not open the ports other way round . With this setup you should be able to make your client connections work |
In my experience, atheek is absolutely correct. |
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| atheek |
| Posted: Fri Oct 03, 2008 11:54 am Post subject: |
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Partisan
Joined: 01 Jun 2006
Posts: 327
Location: Sydney
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| PeterPotkay wrote: |
| atheek wrote: |
Each client's request are processed via its own SVRCONN. This is why its a good reason to specify * as port
for Source in the firewall rule. You can allow the client tcp/ip stack to randomly allocate any ports for the multiple concurrent connections.
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Thousands of connections can all come into a single port, like #1414. Can't outgoing connections all leave via one port as well? If yes, you can avoid making your outgoing firewall port rules wide open. |
I think No.
http://www.tcpipguide.com/free/t_TCPIPClientEphemeralPortsandClientServerApplicatio-2.htm
| Quote: |
Ephemeral Port Number Assignment
Ephemeral port numbers are assigned as needed to processes by the TCP/IP software. Obviously, each client process running concurrently needs to use a unique ephemeral port number, so the TCP and UDP layers must keep track of which are in use. |
Instead of opening all the port by specifying *, you can specify a range . In this case LOCALADDR needs to be used to instruct the client tcp/ip stack to set the ephemeral ports for the channels to a value in the range. Not sure if this works for a SVRCONN. If no, there is no other option than to open all ports for outbound |
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| silvestrelsl |
| Posted: Mon Oct 06, 2008 7:06 pm Post subject: |
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Novice
Joined: 29 Sep 2008
Posts: 10
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Thanks guys for your valuable information.
I am working on the architecture setup now. Will get back to you what is the correct way to setup the firewall after I have done some experiment here. |
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