Re: Can't Connect Remote Desktop From Outside Network -- DSL Modem



"Sooner Al [MVP]" wrote:

"fzfrank" <fzfrank@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:211E8459-C357-47D0-A646-CACD28EB5547@xxxxxxxxxxxxxxxx
I apologize if this is a double-post. I just submitted a similar post but
I'm
not sure it made it -- I searched for it and it wasn't there.

I have spent the last couple of days trying to set up remote desktop and
I'm
wondering if my DSL Modem or DSL provider is preventing me from doing it.

I know I have everything working on me local network because I can do a
remote web-based (and standard) connection to my host from another
computer
on my local network. I'm also pretty sure I have the correct settings on
my
routers. My router configuration is:

DSL Modem --> VOIP Router --> Wireless Router --> 2 computers

I have the VOIP Router DMZ-ing to the Wireless Router and the proper ports
on the Wireless Router forwarded to the host computer.

I just can't connect to the host computer from outside my network. I try
to
connect to the web site http://xx.xx.xxx.xx:xx/tsweb and I get a "can't
connect" error message.

Any thoughts? FYI, my DSL modem is "Microsoft DSL 1000".

Thanks.

You need both TCP Port 80 (IIS) and TCP Port 3389 (Remote Desktop aka RDP)
open/forwarded through any firewall or router the PC you want to connect to
is behind. So, if you go to the http://www.canyouseeme.org site while on
that PC does the test pass? Meaning can you pass both the IIS and RDP port
tests? If not, can you at least pass the RDP port test? Be aware some DSL
modems are also routers and either you need to open/forward the appropriate
ports or configure the modem into a bridge mode, ie. disabling its NAT
function. Check the users manual for help with that.

Also make sure your calling the correct public IP. Note that with most
current consumer grade routers it is *NOT* a valid test to call the PC from
another PC on your local network using the public IP of the modem and/or
router.

http://theillustratednetwork.mvps.org/RemoteDesktop/TroubleshootingDiagrams/Basic.html

Also note that some ISPs block TCP Port 80 incoming because running a web
server (ie. IIS) that is publicly available is a violation of a residential
account terms of service. Check with your ISP about that...

--

Al Jarvi (MS-MVP Windows Networking)

Please post *ALL* questions and replies to the news group for the
mutual benefit of all of us...
The MS-MVP Program - http://mvp.support.microsoft.com
This posting is provided "AS IS" with no warranties, and confers no
rights...

I tried canyousee.org and neither passed the test. I also tried DMZ-ing both
routers and it still didn't pass the test. I previously opened the ports on
the host computer's firewall and I was able to connect with another computer
on the local network, so I assume that means the firewall is configured
correctly.

I'm going to try plugging the host computer directly in to the DSL modem.
Will that at least isolate the problem?

Re: calling the computer from a local network computer, I had someone else
try from across the country and they got the same error message.
.

Relevant Pages

  • Re: OWA & RWW Not Working
    ... I have also found that Remote Desktop Connection works fine, by using the DSL MOdem IP Address. ... I keep reading about openeing ports and stuff, but no one actually says how to. ... Also, most of the posts deal with a router and port forwarding, which i don't think pertain to us since we only have a DSL Modem. ... Unlike the standard SBS IIS setup, ISA is fussy about what name a page is called by. ...
    (microsoft.public.windows.server.sbs)
  • Re: ATTN Tony Whitmore please
    ... I've not used your router before, but I've just been looking up ... that the router is configured with ports 80 and 23 open on the public ... log into your router using the ARM interface. ... telnet and http access to just your local network. ...
    (comp.security.firewalls)
  • Re: Ok, here my incoming SMTP /remote access problem again
    ... - My incoming SMTP mail that is. ... It turns out, that the Westell 2200 DSL router will not forward any ports, ... respective ports to be forwarded on through the DSL modem to my router. ...
    (microsoft.public.windows.server.sbs)
  • Re: Request for help: troubleshooting pcAnywhere with TZO + Linksys
    ... Take out the router, hook up your desired PC Anywhere server ... directly to the DSL modem. ... its doubtful it blocks any ports ... This is the fastest way to diagnose whats up, Your ISP could also ...
    (comp.security.firewalls)
  • Re: Cant Connect Remote Desktop From Outside Network -- DSL Modem?
    ... on my local network. ... I have the VOIP Router DMZ-ing to the Wireless Router and the proper ports ... my DSL modem is "Microsoft DSL 1000". ... Meaning can you pass both the IIS and RDP port tests? ...
    (microsoft.public.windowsxp.network_web)
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