Re: Open Ports
From: Perquiaga (perquiaga_at_itcsa.net)
Date: 02/06/04
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Date: Fri, 6 Feb 2004 15:50:25 -0300
I'm using portqry, the one included in the support tools.
And i can't make it work yet.
"Mickey" <anonymous@discussions.microsoft.com> wrote in message
news:c0cd01c3ece1$8c659490$a501280a@phx.gbl...
> I guess what Sharad was saying was that your Internet
> client trying to connect to the application hosted behind
> the NAT will make a request to open these ports on your
> NAT server. If they are mapped correctly they should open
> upon request.
>
> I mapped my ports correctly on the NAT. But sill couldn't
> get my VPN client to go through the NAT.
> Perquiaga, what portqry tool are you using to see if the
> port is listening? I am troubleshooting my ports but could
> find a good tool to test these ports. Please advise.
>
> Thank You.
> >-----Original Message-----
> >HI!
> >I've set up the port/service in NAT settings to forward
> an incoming request
> >in an special port used by an application witch i need to
> be accessed from
> >the internet, being installed on an internal workstation.
> >Everything is done, but it dows not open the port on the
> server. The
> >settings in NAT indicates everything is OK. Incoming and
> uotgoing port are
> >the same, the protocol is the same the application uses
> UDP, and the private
> >ip the workstation has.
> >Please, how do i open the port ?
> >The portqry keeps saying NOT LISTENENING and I'm getting
> mad.
> >How do i get it to start listening ?
> >Sharad told that a service must request the por to open ?
> >but if the software is in an internal workstation, how do
> i run a service on
> >the W2K3 server to open the port ? can you explain me a
> little ? i can't get
> >it...
> >thanks
> >
> >"sharad" <sharad@anonymous.com> wrote in message
> >news:ubrDNFx6DHA.1368@TK2MSFTNGP10.phx.gbl...
> >> Do you have a mail server on your server?
> >> If not then get the free version from www.argosoft.com
> and install it.
> >> Change the SMTP port of the mail server, from default
> 25, to 500, then
> >from
> >> internet telent to your server by its ip address
> followed by space
> >followed
> >> by 500
> >> (e.g. telnet 64.91.10.101 500)
> >> If it gets connected and says Welcome to xyz mail server
> >> then port 500 is correctly enabled and can be opened
> >> when requested.
> >> Repeat above by changing the SMTP port of the mail
> server to other ports
> >you
> >> want to check.
> >>
> >> Sharad
> >> "Mickey" <anonymous@discussions.microsoft.com> wrote in
> message
> >> news:91f701c3ea29$89d14d60$a501280a@phx.gbl...
> >> > Thank you, Sharad, for your quick response. I very
> much
> >> > appreciate that. Now I understand...
> >> >
> >> > Is there a utility to test requesting to open a port
> >> > through the internet? The reason I am asking is that
> I am
> >> > trying to connect to my company's VPN server using
> AT&T 's
> >> > VPN network client from home's NATed environment. I
> keep
> >> > getting a IPSEC error...
> >> >
> >> > AT&T requested certain open ports. My problem is that
> any
> >> > client behind the NAT server are not able to connect
> to a
> >> > VPN server across the internet. If I bypass the NAT,
> it is
> >> > working fine. I got an 'IPSEC communication error...'
> >> > AT&T stated that they are using l2tp and that I need
> to
> >> > open those ports: UDP 500, TCP 50, 5080, 379... on
> the NAT
> >> > Server/Router. Since I am using broadband connection,
> >> > IPSEC drivers are needed and loaded by the AT&T client
> >> > software at the client workstation to initiate the
> >> > tunneling. But for some reason, the tuneneling can't
> be
> >> > established through the NAT. Any suggestions?
> >> >
> >> > Thanks again for your assistance.
> >> >
> >> > >-----Original Message-----
> >> > >What you did is, gave access to the port from
> internet.
> >> > >You are asked open ports for connecting through
> internet,
> >> > which most
> >> > >propably means, "Do not
> >> > >block them, give access to them."
> >> > >
> >> > >It is not required to keep the port actually open.
> >> > >
> >> > >So you have given access now, through NAT. Now
> >> > >a process should make a request to open the port,
> then
> >> > >it will communicate, after it is done the port will
> be
> >> > closed again.
> >> > >Sharad
> >> > >
> >> > >"Mickey" <anonymous@discussions.microsoft.com> wrote
> in
> >> > message
> >> > >news:8eed01c3ea1e$c3ddb030$a001280a@phx.gbl...
> >> > >> Thank you, guys, for the input. I tried Service and
> >> > Ports
> >> > >> setup in IP Routing. I used the same ports for both
> >> > >> incoming and outgoing (such as 1731) and put in the
> >> > >> internal private IP. But when I do a port scan
> from a
> >> > web
> >> > >> port scan tool site, it still shows that the port
> is not
> >> > >> open. Did I do something wrong? When I scan other
> port
> >> > >> like 1720, it shows that the port is open. Please
> help!
> >> > >> Thanks!
> >> > >>
> >> > >> >-----Original Message-----
> >> > >> >Start - Administrative Tools->Routing and Remote
> >> > Access.
> >> > >> >
> >> > >> >When it opens, expand "IP Routing" and under it
> >> > >> >find NAT/Firewall and click on it. On the right
> side
> >> > then
> >> > >> >you will find the adapters listed. Right click on
> the
> >> > >> adapter which is used
> >> > >> >for internect connection, and
> >> > >> >select properties.
> >> > >> >When the property window opens click on Service
> and
> >> > >> Ports Tab.
> >> > >> >There is already a list of standard ports which
> are
> >> > most
> >> > >> >commonly used, and these can be opened by
> checking the
> >> > >> coresspoinding check
> >> > >> >box. If the required port is not in the common
> list,
> >> > you
> >> > >> can click on "Add"
> >> > >> >give a description you like, and enter the
> required
> >> > >> incoming and outgoing
> >> > >> >port.
> >> > >> >Sharad
> >> > >> >"Mickey" <anonymous@discussions.microsoft.com>
> wrote in
> >> > >> message
> >> > >> >news:6dff01c3e6ad$c3bb7980$a501280a@phx.gbl...
> >> > >> >> I am using Windows Server 2003 NAT and am
> requested
> >> > to
> >> > >> >> open certain ports for a software to connect
> over the
> >> > >> >> Internet. I wonder if someone could tell me how
> to
> >> > open
> >> > >> >> and/or close certain ports in Windows Server
> 2003 and
> >> > >> how
> >> > >> >> to configure port forwarding in NAT. Also, is
> there a
> >> > >> tool
> >> > >> >> to list all open or closed ports?
> >> > >> >>
> >> > >> >> Thank you very much in advance!
> >> > >> >
> >> > >> >
> >> > >> >.
> >> > >> >
> >> > >
> >> > >
> >> > >.
> >> > >
> >>
> >>
> >
> >
> >.
> >
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