[hblug] Re: Getting Broardband

[Rene Bartosh]

Most ADSL modems are actually modem/routers, that is, they are both a
modem and a router. Because they all use NAT by default, there is no
need to have a software firewall the prevent anything nasty coming in
from the net, however if running windows you may wish to have a
software firewall to prevent nasty things getting out, but that is
your choice (personally I do not bother). The only way things can
connect to you through NAT is if you setup a port forward (sometimes
called a pinhole) which passes a specific TCP and/or UDP port on your
WAN interface (the internet interface) to a specific client PC,
however it will only allow access to the client PC on that port. For
example. I have the RDP and VPN ports on my external IP forwarded to
my windows box, but that is the only service that can be accesses
externally, you cannot access for example my SMB shares.

Also regarding static IP addresses, I think some ISPs work on the
basis that while it might not actually be static, it only changes
rarely. The best thing to do is just setup dynamic DNS (dyndns.com or
no-ip.com) on your router (most support this) then you can forget
about IP addresses completely.

Regards,

Rene

On 25/03/2008, Michael Adams <linux_mike at paradise.net.nz> wrote:
> On Mon, 24 Mar 2008 17:43:44 +1300
>  chris morris wrote:
>
>  > Tony Hughes wrote:
>  > > Without a firewall on any system, then a bad guy can access any
>  > > services on your machine(s) that are open to either attack, or
>  > > simple sharing.
>  > > Linux is no exception to this.
>  > > Regards,
>  > > Tony Hughes
>  > I've never had a firewall on my linux boxes - and never had any (
>  > external ) trouble either...
>  >
>  > I just did an online port probe here
>  > http://probe.hackerwatch.org/probe/probe.asp
>  >
>  > and came up all secure, so I dont bother with firewalls on linux
>  > boxes.
>  >
>  > chris
>  >
>
>
> Doesn't your fancy router/modem have the firewall installed? He says
>  remembering a list-post from years back. Long teeth, grey hair and
>  spongy questionable memory.
>
>
>  --
>  Michael
>
>  All shall be well, and all shall be well, and all manner of things shall
>  be well
>
>   - Julian of Norwich 1342 - 1416
>
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-- 
>From Rene Bartosh (Gmail account) <kirjava at gmail.com>
Personal: http://kirjava.net.nz/
Work: http://eksion.net/