Loop back (lo) .. maybe ? HELP im a newbie
Can someone please help.
I am very new to Linux .. but I took the plunge - I got a nice new pc and installed Ubuntu 10.10.
I’ve learnt some basics and everything runs nice but I need to do something with the network to emulate my old set-up, so first let me tell you my old set-up.
Firstly I have a netgear DG834 v3 router without NAT loop back and it doesn't support the newer firmware supporting this, so on my old pc set-up I have various server set-ups one of which is Apache which I use to build websites and test flash content etc.., obviously without NAT loop back others can access my server but I cannot because of NAT conflicts - so I utilised the Microsoft loop back utility - and ill say right now .. I didn’t really configure it myself, I simply followed some instructions I found online and it all worked fine .. I can type in my dns address - myaddress.dnsservice.com and voilà I connect no problems.
OK here's what the Microsoft loop back adapter looks like:
client for Microsoft networks unchecked
file and print sharing for Microsoft networks unchecked
internet protocol (TCP/IP) enabled (checked)
properties on internet protocol (TCP/IP):
use following IP is checked and is:
IP address 126.96.36.199
Subnet mask 255.0.0.0
Default gateway left blank
use the following DNS is checked but -
Preferred DNS Server and Alternative DNS Server are both blank
clicking the advanced button on this tab shows the IP settings as set i.e 188.8.131.52 and subnet mask 255.0.0.0
DNS tab is blank
WINS tab is blank
Options tab shows TCP/IP filtering with no properties.
under the advanced tab:
allow other networks users to connect to connect through this computers internet services is unchecked
this connection is fire walled with no exceptions.
that’s it, its un bridged .. and just works, I can launch my browser or client of choice and it just seems to do what its supposed to.
Now ... my old PC is still up and running .. and works as is .. providing I try to access my server from the same PC... if I try to access this pc from my new Ubuntu set-up .. I cant connect to it .. I get a conflict and it just hangs.. in other words .. I type in the the address myaddress.dnsservice.com this connects to my dns account which then routes over the Internet to my router.. and that’s as far as it gets (I presume).
My old pc with my old set-up does have a network card .. and I have tried connecting my new pc (Ubuntu) via this card also with shared Internet services .. in the hope it would just utilise the loop back adapter ... but it doesn’t and if I try to force the loop back adapter to share Internet services .. it defaults to IP 192.168.0.1 - which is my router IP .. and so it conflicts and messes everything up.
OK.. at the risk of babbling on endlessly - hopefully I’ve painted the picture. How can I, either over the Internet or through a shared connection via my old PC .. loop back to my server ?
(I don't want to edit the HOST file I want to do this over the Internet)
I have tried to set-up the loop back utility on my Ubuntu system .. but its very confusing for a novice .. I see its there .. and working, its IP 127.0.0.1 and subnet 255.0.0.0 which is the default, but I don’t see it in the Network Manager Applet and not editable in network tools (config button grey'd out) I haven’t the slightest idea how to configure it.. and all the information on this I read just confuses me. Also .. just as a test .. I booted my Ubuntu PC in XP .. same system as my old pc.. and also set-up a loop back adaptor on that.. just as a test .. but when I try to access my server I cant connect either .. this was with duplicated IP etc. .. identical set-up .. so please, if anyone has some simple instructions .. or obvious ideas how I can set this up I would be very grateful - but remember im an idiot .. don't get all sudo on me - or if you can tell me what I need to achieve then I can focus on that .. at the moment I'm just wandering about in the ether .. or is that the eth0 :))
... oh .. p.p.s,, my Internet service provider wont allow use of NAT loop back router - so I need to do it this way :))
p.p.p.p.s .. I am more than happy to throw my old pc in the trash .. my new p.c is more than fast enough to handle the servers and my general use .. so thats an alternative .. but I would prefer to keep the servers separate.