[Watford] plot thickens

Mark Stewart markwstewart at gmail.com
Thu Jan 18 10:32:30 GMT 2007


Had this myself once - good to rule out:
Contact your ISP and ask them what your fixed IP is (presuming you are
paying for a fixed IP?) and enquire if they are doing any maintenance or
future scheduled work on their infrastructure that may affect their
addressing scheme.


On 17/01/07, Jonathan Dibble <recruitment at jdibble.com> wrote:
>
> HI Steve/Neel/anyone else who want to comment,
>
> Thanks for your suggestions.
>
> First of all i should have been clearer.  I don't have any problems
> inside my little network.  i can browse served up apps on my ruby on
> rails box on port 3000 without any difficulty from another machine.
>
> my problem is that i cannot get from outside my router (say from work)
> onto my router and through to the RoR box.  when i go to
> www.whatisimyip.net i get a totally different IP from the one my router
> says it has??? how is that possible?  i restarted my router and the it
> gets a new IP but the whatismyip is still different.
>
> i have the router set up to forward any tcp for port 3000 onto the
> particular box. i also have the remote management switched on - its just
> one of those consumer netgear things.  that should allow me to access
> remotely the router set up. it's set up for port 8080.
>
> ok, so when i go to access the router from the internet onthat port i
> get nothing.  however i tried out neels suggesion and used nmap. that
> told me ports 80 and 5190 are open. it says 3000 and 8080 are closed.
> my router is set up that 3000 and 8080 should be open????? also, 80 and
> 5190 closed??? what is going on?  for nmap i used the IP address the
> router tells me it has.
>
> the router has a log, all that is showing is that i constantly get
> attempts made on port 26390?  (Dos) whatever that means?  does that mean
> denial of service? quick though came to me...does that prevent access
> from outside?  is that my problem?
>
> any help appreciated?  this problem is more than a bit annoying now :-)
>
> cheers,
> jon.
>
> On Wed, 2007-01-17 at 10:00 +0000, Neel Upadhyaya wrote:
> > If you're using a Redhat variant check the SELinux settings and for
> > any distro check your local firewall config.
> > Also it's not uncommon for a broadband router to reject pings as it
> > makes it harder to determine what equipment is on the other side of
> > the wall.  If you have the IP address then I could do an nmap and
> > determine what ports are open.  You  can do this if you have shell
> > access to a box outside your home network.
> >
> >
> > On 17/01/07, Steven Acreman <sacreman at gmail.com> wrote:
> >         I'd start from inside your network. Disable the service that
> >         runs on port 3000 temporarily and start netcat in listen mode
> >         on that port. Then from another pc on your lan telnet to the
> >         port and type some stuff.
> >
> >         Then check your router. Make sure external port 3000 is port
> >         forwarded to the internal server on the same port. Determine
> >         your external IP address (sites like http://www.whatismyip.net
> >         will tell you that - or just look on your router).
> >
> >         From a PC outside of your network try the same telnet test
> >         again on port 3000 with netcat listening.
> >
> >         If all else fails you can try reseting the router or changing
> >         the port to something more well known.
> >
> >
> >         On 17/01/07, Jonathan Dibble <recruitment at jdibble.com> wrote:
> >                 Guys,
> >                 Can any one help me out with this silly problem?
> >
> >                 I have a spare box set up for learning ruby on rails,
> >                 and i want to view
> >                 pages on it from the internet (eg work). however my
> >                 router simply WILL
> >                 NOT behave as though it is visible ofn the internet.
> >                 i cannot ping it
> >                 or anything. in the past i had ftp and mysql going
> >                 through it from the
> >                 itnernet onto my little network to a particular box,
> >                 but now it just
> >                 won't play ball.  i checked and double checked i have
> >                 the right ip and
> >                 i'm sure i have it correctly. any ideas?  i enabled
> >                 port forwarding for
> >                 3000 which is what ruby on rails and webrick uses for
> >                 development. but
> >                 ithink its nothing to do with the box becuase there is
> >                 no record in the
> >                 router log of any connections being attemped????
> >
> >                 does anyone have any suggestions?  is it possible the
> >                 isp blocked it
> >                 somehow?
> >
> >                 cheers,
> >                 jon
> >
> >                 On Mon, 2007-01-15 at 16:40 +0000, CLIFF DEAMER wrote:
> >                 > Hi Steven,
> >                 > That's a nice offer and I would be up for that. but
> >                 I am one with
> >                 > questions not answers so await news on others
> >                 interested (otherwise I
> >                 > could bore you to tears!)
> >                 > Cliff
> >                 >
> >                 > Steven Acreman <sacreman at gmail.com> wrote:
> >                 >         Is anyone up for a Saturday meeting before
> >                 March? My
> >                 >         girlfriend works most Saturdays so my house
> >                 is free (I live
> >                 >         just off of StAlbans road in Watford which
> >                 is close to the
> >                 >         town centre). It's only a 2up-2down terrace
> >                 but it should fit
> >                 >         5 or 6 people fairly comfortably.
> >                 >
> >                 >         Just a suggestion until the core membership
> >                 increases..
> >                 >
> >                 >         <snip>
> >                 >
> >                 > _______________________________________________
> >                 > Watford mailing list
> >                 > Watford at mailman.lug.org.uk
> >                 > https://mailman.lug.org.uk/mailman/listinfo/watford
> >
> >
> >                 _______________________________________________
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> >
> >
> >
> >         _______________________________________________
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> >
> >
> >
> >
> >
> > --
> > MCSE is to computers as McDonalds Certified Chef is to fine cuisine.
> > _______________________________________________
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> > Watford at mailman.lug.org.uk
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>
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