Re: Controlling Outbound Ports

"Baboon" <baboon@xxxxxxxxxxxxxx> wrote in message
news:1E57805F-89F1-4CCB-8806-766E19EE5CF5@xxxxxxxxxxxxxxxx
Is there some way, most likely via some utility, to control the outbound
ports that are used to make a TCP connection for testing? I would like to
be
able to do something like "localhost 53200 -> www.somewebsite.com -> 80".

We are having a problem where only XP and 2003 machines from our network
are
unable to access a particular website. Vista and Macs do not have the
problem. We have noticed that the latter 2 operating systems use much
higher
ephemeral ports than XP or 2003, so we suspect that the outbound ports are
being blocked somewhere beyond our firewall, but we need something more
conclusive.

If this is a website then the outbound port is 80 unless otherwise
specified.

The Client Source Port is a random number usually, but not always, between
2500-5000. The Client Source Port is established by the Client and not the
"target", and therefore if this port was the problem the Client machine
would not get to any site at all, you would not simply see this with only
certain sites.

Most likely there is something in the Code of the pages of the Site that
isn't reacting well with the Version of IE on the XP/2003 machines. If the
Site uses Java (Java Applets, not simply JavaScript) the the version of the
JRE could matter as well and the version of the JRE is probably different on
Vista and certainly different on the MAC.

--
Phillip Windell
www.wandtv.com

The views expressed, are my own and not those of my employer, or Microsoft,
or anyone else associated with me, including my cats.
-----------------------------------------------------


.

Relevant Pages

  • Re: TCP 3389 and Remote Desktop
    ... conflict using a Linksys wireless router for a peer to peer network ... provided instructions for changing the remote port using RegEdit, ... firewall you utilize on said computer *and* have Remote Desktop turned on ... One method of accessing several machines behind a single router is to change ...
    (microsoft.public.windowsxp.work_remotely)
  • Re: SBS 2003 and Outlook RPC over HTTP issues
    ... Look in IIS at your Exchweb, Exadmin, exchange-oma, and RPC sites' directory ... Why is it called RPC over HTTP if HTTP is not really needed to be ... As pointed out by others, port 80 does NOT need to be open, and yes, it ... I have about 20 of these SBS machines at other locations and have ...
    (microsoft.public.windows.server.sbs)
  • Re: Event ID 6161 for HP 6840
    ... patch related to an exposure via the print spooler service. ... download which offers the option of a local port. ... >> There were no problems with the install and the printer works find so long ... >> 3) All machines on the network can connect to the printer via Internet ...
    (microsoft.public.windowsxp.print_fax)
  • Re: Babysitting on iptables requested :-)
    ... for acceptance? ... > that is destined to port range 137-139, tcp as well as udp, incoming ... > between Windows machines, so without this a Windows machine in your ... MS packets from my LAN to the gateway ...
    (comp.os.linux.security)
  • Re: Firewalls and RPC (was "Re: Improvement to IPFilter / nfsd in FBSD (6.2+?)")
    ... most other RPC services get assigned high port numbers in the 327xx ... NFS is port 2049 by default, ... I don't trust the rest of the clients on my subnet other ... managed personal machines, virii, and spyware on machines here. ...
    (freebsd-questions)
Loading