Re: Cannot connect to remote compter, need help troubleshooting

Tech Tip: Click here to run a free scan for Windows Errors and optimize PC performance

From: Bill Sanderson (Bill_Sanderson_at_msn.com.plugh.org)
Date: 09/02/04 

Date: Thu, 2 Sep 2004 10:20:57 -0400

Even ISP's that block port 80 only block it inbound towards subscriber
lines--i.e. it isn't blocked outbound from the subscribers, although some
ISP's do use proxy servers.

So--if the machine to which you are connecting is across the Internet from
your location, nothing your ISP is doing should be blocking you, nor should
any Microsoft firewall. Third party firewalls which regulate outbound
traffic might, as will anything which interferes with DNS--a hosts file with
a bad entry, for example.

Is the remote system pingable by IP from other locations?

I'm stil not sure the picture in my head is correct--the host system is
across the Internet from your home machine with the new cable modem right?

If, in fact, it is your home machine with the new cable modem you are trying
to reach, I'd finger the new cable modem as the problem--I'm not sure about
cable modems, but some DSL modems incorporate nat/router functionality, and
thus need port forwarding set up for inbound access. Check with your ISP
about whether the new modem has this sort of functionality.

"Lloyd" <lloyd@concernedchristians.org> wrote in message
news:%23ch57MLkEHA.596@TK2MSFTNGP11.phx.gbl...
> You are right, my internet is working fine. I can send and receive email
> just fine. Websites pull up OK too. The remote desktop works from other
> PC's, just not my home PC and I cannot figure out why. The only major
> change
> has been an upgrade to the cable modem. Could there be some type of port
> restrictions run by my ISP? I know that most ISP's block port 80 to keep
> folks from sucking up bandwidth by hosting unauthorized websites. I have
> never heard of blocking RD ports though....
>
> --
> Lloyd
>
> "Bill Sanderson" <Bill_Sanderson@msn.com.plugh.org> wrote in message
> news:uLHU6HKkEHA.3712@TK2MSFTNGP15.phx.gbl...
>> Lloyd:
>>
>> Do I have this correct?
>>
>> You've a remote machine which is enabled for Remote Desktop, and you are
>> able to connect to it from other machines, proving that it is configured
>> correctly, and that you know the correct IP address or DNS name.
>>
>> I take it these connections are also across the Internet, just as yours
> will
>> be when you get it working (You will!)
>>
>> There's no need to turn the XP firewall off on the host machine--just be
>> sure that Remote Desktop is enabled as an exception through it--this is a
>> checkbox in both the SP1 and SP2 firewalls.
>>
>> Now--you are sitting at home, with a newly installed cable modem ISP
>> connection.
>>
>> Can you bring up web sites in a browser? Does Internet-based Email work
> for
>> you?
>>
>> When you say that you cannot ping either by IP or name, this sounds like
>> your Internet connectivity isn't correct yet.
>>
>> The XP firewall at your home (client) location shouldn't interfere in any
>> way with outbound connections to another machine.
>>
>> "Lloyd" <lloyd@concernedchristians.org> wrote in message
>> news:%23uQ8RaFkEHA.2340@TK2MSFTNGP11.phx.gbl...
>> > First off, the settings are right on the remote computer. I can connect
> to
>> > it from other PCs just fine. Mine will not connect though. The firewall
>> > that
>> > XP has is off, but I can't ping the IP or ANY other domain name for
>> > that
>> > matter. I also cannot telnet the IP either.
>> >
>> > I just had my cable modem installed and the techie turned on the XP
>> > firewall
>> > without me knowing. Is there anything else that would keep me from
>> > connecting RD and pinging locations other than the firewall? I am
>> > trying
>> > to
>> > connect RD through the internet. Any thoughts?
>> >
>> > --
>> > Lloyd
>> >
>> >
>>
>>
>
>

Relevant Pages

  • Re: Strange connections to ports 1214, 6346 and 28800
    ... Strange connections to ports 1214, ... Don't know the details of your provider's cable modem network. ... TCP 6346 is the default port for Gnutella, ... > - All targeted machines where in my subnet, ...
    (Incidents)
  • Re: Two routers, two broadband connections
    ... Chris Parker wrote: ... > binding to a particular WAN port by indicating a particular MAC ... if anyone has any ideas on how you can set up two internet ... > connections on one LAN(no load balancing or teaming, ...
    (comp.security.firewalls)
  • Strange connections to ports 1214, 6346 and 28800
    ... When I did an Ipconfig on the machine connected to the cable modem it ... What I saw where lots and lots of connections to OTHER machines from ... other machines to TCP port 1214, TCP port 6346 and UDP port 28800. ...
    (Incidents)
  • Re: Can no longer send/receive external email.
    ... block on port 25 traffic to your cable modem. ... Internet (via comcast) has not been the most reliable historically. ...
    (microsoft.public.windows.server.sbs)
  • Re: port 445 ?
    ... Hummm - A similar question about port 445 ... *from* the internet and outgoing connections ... *to* the internet on port 445. ... > All your favorites on one personal page – Try My Yahoo! ...
    (freebsd-questions)