Hi All,
OK, so a firewall won't stop a DDOS attack from flooding your internet pipe,
but it will stop the attack from actually getting to you internal network. The
firewall will also stop your internal machines broadcasting on port 139 adn
445, and if your firewall drops all external connections (including ICMP) and
you're not broadcasting everything to the internet there is less (not much, but
deffinately less) chance of your actually being attacked in the first please -
if you can see it, you can attack it.
To be honest lots of firewalls are able to withstand a DDOS attack, they drop
the connections, in my book that's withstanding an attack. If the internet pipe
fills up, it doesn't stop the firewall doing it's job :-) just stops internet
access, when the attack has finished your network still works :-)
Best Regards
Gethin
-----Original message-----
From: gmx pal_adam@gmx.net
Date: Wed, 27 Sep 2006 21:00:39 +0100
To: security-basics@securityfocus.com
Subject: Re[2]: No NetBios share + No Open Port = Safe Win98?
Hello Frynge,
Monday, September 25, 2006, 6:11:13 PM, you wrote:
<==============Original message text===============
FCS> I dont know if anyone has replied to this yet, but here is some advice.
FCS> The port 139 exploit was usually used for file and printer sharing hacks.
FCS> Having that port open will allow someone to see your computer online with
FCS> programs that will check for file and printer sharing vulnerabilities and
FCS> also, possibly use your computer for DDOS attacks or flood your computer
via
FCS> that port.
FCS> I would make sure file and printer sharing is not on (you may not have
set
FCS> it on, but sometimes its on by default and with no password)
FCS> YOU SAID "I used winipcfg.exe to obtain my IP address (192.168.1.101) "
FCS> It tells me you are on an internal network and that is not your real ip
FCS> address but an internal address. You will have another ip that is your
real
FCS> ip address, you can find this by googling it and looking for online ip
FCS> finders.
FCS> For DDOS and flood attacks make sure you have a nice firewall set up and
you
FCS> should be fine.
Erm what ? As far as i know, no private firewall is able to stand
against a strong DDOS, and corporate firewalls are only able to
mitigate it, not more.
Having a nice firewall set up will not save no one from a serious
ddos, maybe just from some attepts of unexperienced scriptkiddies...
FCS> Win98 closed that port in later additions and service packs, so you may
want
FCS> to update your windows at windows update if you can.
FCS> Kelly Sigethy
FCS> Frynge.com
FCS> ----- Original Message -----
FCS> From: <gohyongkwang@hotmail.com>
FCS> To: <security-basics@securityfocus.com>
FCS> Sent: Friday, September 22, 2006 9:01 PM
FCS> Subject: No NetBios share + No Open Port = Safe Win98?
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Best Regards
Gethin
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