Re: Semi-functional networking?

On Sun, 2004-08-22 at 06:34, Niall O Broin wrote:
> On 21 Aug 2004, at 21:37, Shon wrote:
> 
> > My NIC is configured by DCHP, I can then ping my router (192.168.64.1),
> > my ISP's DNS servers, and an internal server.  I can SSH to the 
> > internal
> > server. But the instant I attempt to HTTP anywhere, I never get
> > replies.  I've sniffed the traffic in LNX-BBC, but couldn't find a
> > problem (although, I'm not the best protocol analyst).
> >
> > My entire network is NAT'd to the outside world and all works fine.  I
> > just seem to be missing something with LNX-BBC
> 
> Is it maybe a name resolution issue? Can you ping hosts in the outside 
> world by name rather than IP address? Can you use dig to look up IP 
> addresses? From what you say about your NIC being configured by DHCP 
> this SHOULD be working but you didn't say anything to show that it is.
> 
> Please accept my apologies if this provokes a response along the lines 
> of "What kind of an idiot do you think I am?" :-)
> 
> 
> 
> 
> Niall
> 
> 

What kind of ...  just kidding.

DNS works fine, too.  Andrew Scott asked off-line about firewalls and
how I'm HTTPing.  I do have a Linksys router doing NAT for the entire
network, and the PC I'm using for LNX-BBX is getting the same IP from
the Linksys DHCP server that it does when I'm booting Windows - so I
doubt it's a firewall/NAT problem. HTTP: I first used Browsex, then
tried Lynx, then tried telnet to port 80. None received a response from
any server (internal or external). I immediately SSH'd to one of my
local servers and telnet'd to port 80 at www.intel.com, typed 'GET
/<ENTER><ENTER>' and received some nice HTML.

So, from LNX-BBC, I'm getting DHCP data (IP, DNS, etc), I can ping
within my network and outside it to my ISP (my ISP block ICMP to/from
its network, so I can never ping Intel, Slashdot, etc), I can resolve
names, I can SSH - but I can't get HTTP replies.

The trace file I mentioned is available at:
http://digitaldarkarts.com/shon/lnx-bbx-trace.dat (3.1K)

--S