Re: [SLUG] Cheap 3G mobile internet broadband plans ... what they don't have!

[James Polley <slug@xxxxxxxxxxx>]

On Thu, Aug 6, 2009 at 11:12 AM, Roger Salisbury <rgsalisbury@xxxxxxxxxxxxxx
> wrote:

>
> Hi all
>
> How much better are the more expensive 3G plans over the cheaper plans?
>
> I have just tried out a 3G broadband dongle on linux
> Model :  E160
> I tried to get it to work on Centos 5.3 but failed..... couldn't get
> "usb_modeswitch" to give a "/dev/USB0" .
> However tried on  Debians "LENNY" and was  it was trivial to get online
> using the E160.
> (just needed the dial string)
>
> I tried the 1Gig  residential plan & found it wanting.
>
> The dialup PPP connection     ONLY allows 4 incoming ports it seems.
>
> Among other Apps,  I would like to remotely connect via SSH.
>
> Do the higher priced plans have less retrictions  ?
> Do the higher priced plans support SSH?
>
> I found  only 4 ports open.   as below .............
>
> root@debian:~# netstat -an   | grep   "LISTEN "
> tcp        0      0 0.0.0.0:34376           0.0.0.0:*               LISTEN
> tcp        0      0 0.0.0.0:111             0.0.0.0:*               LISTEN
> tcp        0      0 127.0.0.1:631           0.0.0.0:*               LISTEN
> tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN


Netstat shows you the ports where you have a daemon actively listening
for connections; this has nothing at all to do with what traffic the
network would allow.
Not having ssh show up here just means you don't have an sshd listening - it
says nothing about whether you'd be able to connect to that port or not.

The bottom two (internet printing protocol and SMTP) are listening on
localhost only, so won't be accessible over the network anyway.

The top two are more concerning; port 111 is RPC, which you don't want
to expose to the internet; I have no idea what 34376 is. If you run
"sudo netstat -pan", it will tell you which process is bound to that
socket.

>From your point of view, the IP address you're assigned is going to be
more significant;  do
you get an RFC1918 address (ie, an address in one of the networks
192.168.0.0/16, 172.16.0.0/12, or 10.0.0.0/8), or is it a public IP?


>
>
> TIA for any comments
> Roger
>
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