[Sussex] My adsl modem/router

[John Davis]

On Thursday 27 Feb 2003 1:59 pm, Robin Shepheard wrote:
> On Thu, 2003-02-27 at 13:46, john wrote:
> > Whilst the Shields up test, says it can't get in, the "probe my ports"
> > test tells me that ports 21,23 and 80 are open. This is presumably
> > because that is the default for the modem/router.
>
> This means that it has the web, ftp and telnet ports open. I would not
> be worried unless you can change the config of the router via telnet and
> from any IP address and you have not changed the default passwords.
>
> SAR110 supports  "NAPT rule: The default rule that is used in a basic
> single
>
> > IP setup. This blocks unsolicited incoming data, but allows replies to
> > data you requested to return".
>
> I use smoothwall, which has the same feature, very useful as we have 5
> people sharing my adsl connection and they all play different online
> games. An absolute nightmare if I had to open each port individually.
>
> > Or does anyone know the how/why of whether I can stop both my mandrake
> > install and wind0w$ XP from broadcasting my external IP - that is
> > presuming that to do so would mean that when I'm not using my connection,
> > it is "stealthed"?
>
> I cant say I know of anyway to do anything about it
>
> Cheers
>
> Robin
>
>
>
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So it SHOULD be ok leaving the connection always on - yes I appreciate that 
although we have some exceptionally "smart cookies" on the list/in the LUG 
there is always someone who has the ability/time/intelligence/potential to 
try and hack in.

I should also find out from solwise if the config of the router can be changed 
by telnet then. If it can be done, then presumably I need to select a mega 
complicated password and not just something alpha-numeric and work out how to 
add an ip filter rule.. And if it can't be re-config'd via telnet then just 
the password?

regards

John D.