Re: I'm I being targeted?

From: Bill Robins (wmrobins_at_verizon.net)
Date: 08/08/03


Date: Fri, 08 Aug 2003 00:37:37 GMT

Here's a little more detail... The IPs being blocked are from sites I've
been to. But the packets did not occur at the correct time, they were
usually a few hours off.

As far as IPv6... I just read a MS Knowledge Base Article (306203) that
says their basic
firewall and Internet Connection Firewall (ICF) can't block IP version 6
traffic. Is this is true for other firewalls/routers and software firewalls
then that update that came along a week or two ago is going to cause some
major problems! EXCEPT, I'm not sure that installing the update, installs
the update. When I do a ping6, it works. (There is IPv6 stuff on my
computer.) Other IPv6 commands tell me I do NOT have the stack installed
yet. So I'm not so sure IPv6 has anything to do with it.

So what I know now is that "something" happened or changed Monday, possibly
causing a lockup of my home DSL and/or router, and/or resulting in outside
traffic (possibly nefarious) getting through to Kerio for the first time.

I decided to get a new router firewall, went to best Buy and picked up a
Netgear FVS318 ProSafe VPN Firewall. So far, things are back to normal.

(But I still think IPv6 is going to make things interesting sooner than
later.)

Bill

"svek" <svek@gmx.net> wrote in message
news:716a970a.0308070609.254f5f22@posting.google.com...
> "Bill Robins" <wmrobins@verizon.net> wrote in message
news:<4P7Ya.11857$602.8516@nwrddc03.gnilink.net>...
> > If they had been occurring, the router stopped them and all the way back
> > into 2001. Why not now. This whole thing started Monday. Until then,
> > nothing ever got through for Kerio to stop. Nothing!
>
> Since they started after you did a reset on the router could the
> router have drop your current configuration and therefore stopped it's
> built in defense?
> You have a few points which actually make it sounds more like a
> network problem than an attack or scan.
> I assume your computers are using private network blocks as
> 192.168.x.x and packets to these adress ranges should not be routed on
> the internet.
> The ports specified are unassigned by IANA which means they are
> probably used as ports by the client side.
> Kerio isn't configured somehow to just accept packets from your
> gateways (router) IP adress? If so when you cycled the power on the
> router and the modem you might have switched gateway IP adress (if
> your ISP is using DHCP that is) and that would make kerio complain
> about the IP adress used.
>
> > Could this have anything to do with the Windows update for the IP stack,
> > (IPv6 ?).
>
> I'm not really familiar with Windows or IPV6 for that matter to be
> able to comment on that.
>
> Try to see if you get these log messages if you stay passive on the
> net or just if you use a web browser etc, this will give you an
> indication on why you get the ACK's nad you should be able to take it
> from there.
> Also take a look at what programs are running and using the net and
> the port ranges using netstat -na from a console.
>
> This should at least give you a bit more info about the problem.
>
> Cheers!
>
> /svek



Relevant Pages

  • Re: port 80 is open
    ... you said above would be true if a software firewall is used since that is ... the PC so the ISP's router would see the hardware firewall but not the PC ... ISP would know that I am active since it would see packets coming from me ... If you have a connection to your ISP at all (you have a piece ...
    (comp.security.firewalls)
  • Re: Hardware router with firewall - how to configure?
    ... >The router is made by PheeNet ... >1) is the buil-in firewall enough to make my LAN safe? ... >4) what should I enter in the Outbound Packet Filter? ... Outbound filter applies on all outbound packets. ...
    (comp.security.firewalls)
  • Re: Linux Is A Bore
    ... If you have an internal LAN, which has a gateway through a router, you're ... In any of the latter cases, iptables is the way to go. ... There are those who will tell you that you don't need a firewall if you keep ... by inspecting the incoming packets and having iptables decide whether or not ...
    (comp.os.linux.misc)
  • Re: port 80 is open
    ... Suppose I have a firewall installed that has been told to drop any traffic not initiated from the LAN side. ... For all packets dropped by my firewall you say that my ISP's router will send back to ... If I contact the ISP host from which the port scans are coming about the port scans and that ISP puts a temporary/permanent block on my IP address ...
    (comp.security.firewalls)
  • Re: IPv6 routing help?
    ... router told the client it can't send packets to outside addresses with ... It is almost like a translation at the router should be happening, ... no. IPv4 and IPv6 are systematically the same. ... You stated in the original post that you have, on the router, as its ...
    (freebsd-net)