how wrote:
> Dennis de Wit wrote:
>> Mumia W. wrote:
>>> On 08/31/2006 12:51 AM, howfuchs@gmail.com wrote:
>>>> I have a command line script which uses php curl to go out to the
>>>> internet to retrieve some information. Now this works fine in most
>>>> situations except when trying to get of a network where the network
>>>> firewall is blocking a range of outgoing ports.I am told by the
>>>> 'gatekeeper' that the script accesses different ports each time it
>>>> tries to get out to the internet. My question is: Can I programatically
>>>> direct my script to go out of a specific port that I know is open?
>>>>
>>>> Appreciate any help.
>>>>
>>>> Howard
>>>>
>>> I can't see anything in the WWW::Curl::easy documentation that shows how
>>> to specify the source port. You probably could perform the change at the
>>> O/S level.
>>>
>>> <OT>
>>> For Linux, you could get the kernel source and read
>>> Documentation/networking/ip-sysctl.txt; look at the ip_local_port_range
>>> option.
>>>
>>> For Windows, ?
>>>
>>>
>> I don't think this can be done on Windows. I also don't think your
>> fireawll is blocking your outgoing ports, but looks at the port you're
>> trying to connect to, and blocks it then. It doesn't make sense to block
>> traffic coming from random ports, without knowing what protocol is used.
>>
>> But... I'm not a firewall expert, so I might be wrong.
>>
>> Dennis
>
> On my home network where this works fine, as far as I can from my
> firewall window, it seems to be going out of a tight range of ports.
> Where the problem is occurring I am told it trying to go out of a wide
> range of ports. They are prepared to open one specific port for me. I
> know the orginating computer ( where the program will be run) is a
> Windows machine, but I have no other information about the network.
>
> Any further information, would be appreaciated.
>
> Howard
>

As outgoing ports are randomly chosen, it sounds weird to me that they
block those ports. It would mean that that machine cannot establish an
outgoing connection for _any_ protocol.

Besides, I don't think you can manipulate the outgoing port on windows.
(I also don't think you should want to)

what kind of access do you have to this specific windows machine? Can
you use telnet or a remote desktop of some kind?

Do you know whether or not this system is able to connect anything from
the inside? (can it start internet explorer and browse the web?)

Dennis