Re: zotob - blocking tcp/445

2005-08-18 Thread My Name
On 8/18/05, Roger Marquis <[EMAIL PROTECTED]> wrote: > > Andy Johnson wrote: > > I think the point of many on this list is, they are a transit > > provider, not a security provider. They should not need to filter > > your traffic, that should be up to the end user/edge network to > > decide for t

Re: zotob - blocking tcp/445

2005-08-18 Thread Peter Dambier
Roger Marquis wrote: Andy Johnson wrote: I think the point of many on this list is, they are a transit provider, not a security provider. They should not need to filter your traffic, that should be up to the end user/edge network to decide for themselves. How is this different from a trans

Re: zotob - blocking tcp/445

2005-08-18 Thread Andy Johnson
If you have an offending network that does not respond to abuse/complaints, your best course of action is to no longer communicate with that network. That is your own choice as an end-user/network operator. Complaining to their upstream or transit provider will only get them to switch provid

Re: zotob - blocking tcp/445 (fwd)

2005-08-18 Thread Bill Nash
Resent to address formatting misbehaviour: Source proto dstPort count 62.149.195.129 6 42 13018 203.69.204.250 6 445 12889 213.123.129.237 1 204812693 70.17.255.436 443 12685 217.132.56.139 6 489911056 209.181.111.12 6

Re: zotob - blocking tcp/445

2005-08-18 Thread Bill Nash
On Thu, 18 Aug 2005, Roger Marquis wrote: My question is not what can we do about bots, we already filter these worst case networks, but what can we do to make it worthwhile for bot-providers like NETNET to police their own networks without involving lawyers? Establish and document a history

Re: zotob - blocking tcp/445

2005-08-18 Thread Roger Marquis
Andy Johnson wrote: I think the point of many on this list is, they are a transit provider, not a security provider. They should not need to filter your traffic, that should be up to the end user/edge network to decide for themselves. How is this different from a transit provider allowing thei

Fwd: zotob - blocking tcp/445

2005-08-18 Thread My Name
On 8/18/05, James Baldwin <[EMAIL PROTECTED]> wrote: > On Aug 17, 2005, at 11:03 PM, routerg wrote: > > > What if you are a transit provider that serves ebay, yahoo, and/or > > google and the worm is propogating over TCP port 80? > > No one is suggesting that anyone suspend reason when making a >

Re: zotob - blocking tcp/445

2005-08-18 Thread routerg
On 8/18/05, James Baldwin <[EMAIL PROTECTED]> wrote: > On Aug 17, 2005, at 11:03 PM, routerg wrote: > > > What if you are a transit provider that serves ebay, yahoo, and/or > > google and the worm is propogating over TCP port 80? > > No one is suggesting that anyone suspend reason when making a

Re: zotob - blocking tcp/445

2005-08-18 Thread James Baldwin
On Aug 17, 2005, at 11:03 PM, routerg wrote: What if you are a transit provider that serves ebay, yahoo, and/or google and the worm is propogating over TCP port 80? No one is suggesting that anyone suspend reason when making a decision to temporarily, or permanently for that matter, block

Re: zotob - blocking tcp/445

2005-08-18 Thread
Randy Bush <[EMAIL PROTECTED]> wrote: [...] > surely you realize that this discussion is not about civil rights > and the constitution, but about combatting terrorists. And we have always been at war with Eastasia. -- PGP key ID E85DC776 - finger [EMAIL PROTECTED] for full key /:.*posting.googl

Re: zotob - blocking tcp/445

2005-08-17 Thread Fergie (Paul Ferguson)
Oh,no -- not the "Where will it end?" defense. I should just go ahead and invoke Godwin's Law now and put us all out of thread misery... - ferg -- routerg <[EMAIL PROTECTED]> wrote: Where will the filtering end? Is your NSP/ISP responsible for filtering virii, spam, phishing? I'm not saying

Re: zotob - blocking tcp/445

2005-08-17 Thread routerg
On 8/16/05, Gadi Evron <[EMAIL PROTECTED]> wrote: > > Randy Bush wrote: > >>Surely we realize that this discussion is not concerning the oft > >>repeated "Internet's Firewall" debate. > >>Its about containing a potential worm/virus outbreak. Call it a network > >>wide quarantine. > > > > > > sure

Re: zotob - blocking tcp/445

2005-08-17 Thread Christopher L. Morrow
On Wed, 17 Aug 2005, William Warren wrote: > > I may be off base here. Can't an ips look at the traffic; say on 443 > and figure out whether the traffic is malicious or not? If so then let > it filter it. I know IPS's aren't perfect, but, i would prefer this > router be taken, if available an

Re: zotob - blocking tcp/445

2005-08-17 Thread Petri Helenius
Daniel Senie wrote: One of the dangers is more and more stuff is being shoved over a limited set of ports. There are VPNs being built over SSL and HTTP to help bypass firewall rule restrictions. At some point we end up with another protocol demux layer, and a non-standard one at that if we

Re: zotob - blocking tcp/445

2005-08-17 Thread Daniel Senie
day, August 16, 2005 12:58 AM To: Christopher L. Morrow Cc: nanog@merit.edu Subject: Re: zotob - blocking tcp/445 [snip arguments] Do not become the internet firewall for your large customer base... it's bad. Okay, so please allow me to alter the argument a bit. Say we agreed on: 1. Security is

Re: zotob - blocking tcp/445

2005-08-17 Thread Andy Johnson
I think the point of many on this list is, they are a transit provider, not a security provider. They should not need to filter your traffic, that should be up to the end user/edge network to decide for themselves. Additionally, content filtering is great for those type of end-user folks,

Re: zotob - blocking tcp/445

2005-08-17 Thread William Warren
now and then because both arguments make logical sense. - Erik -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Gadi Evron Sent: Tuesday, August 16, 2005 12:58 AM To: Christopher L. Morrow Cc: nanog@merit.edu Subject: Re: zotob - blocking tcp/445 [snip ar

Re: zotob - blocking tcp/445

2005-08-17 Thread Florian Weimer
> NetBIOS was never meant to be a WAN protocol, so no problem > in blocking it. 445/TCP is not NetBIOS! Some people even call the protocol the "Common Internet File System".

Re: zotob - blocking tcp/445

2005-08-16 Thread Sean Donelan
On Tue, 16 Aug 2005, Christopher L. Morrow wrote: > > I think you're overestimating the security clue of most businesses. I'd > > *love* to be proved wrong by somebody citing a credible survey indicating > > that > > most businesses *are* Getting It Right > > I think Sean Donelan had a surve

Re: zotob - blocking tcp/445

2005-08-16 Thread Christopher L. Morrow
On Tue, 16 Aug 2005 [EMAIL PROTECTED] wrote: > On Tue, 16 Aug 2005 13:44:27 CDT, "Church, Chuck" said: > > > *** Rules are going to be different for residential vs. business > > customers. Business customers who aren't on crack probably know better > > to block netbios in and out. > > Whatever

Re: zotob - blocking tcp/445

2005-08-16 Thread Gadi Evron
Randy Bush wrote: Surely we realize that this discussion is not concerning the oft repeated "Internet's Firewall" debate. Its about containing a potential worm/virus outbreak. Call it a network wide quarantine. surely you realize that this discussion is not about civil rights and the constit

Re: zotob - blocking tcp/445

2005-08-16 Thread Valdis . Kletnieks
On Tue, 16 Aug 2005 13:44:27 CDT, "Church, Chuck" said: > *** Rules are going to be different for residential vs. business > customers. Business customers who aren't on crack probably know better > to block netbios in and out. Whatever happened to the War On Drugs, anyhow? :) I think you're ov

Re: zotob - blocking tcp/445

2005-08-16 Thread Randy Bush
> Surely we realize that this discussion is not concerning the oft > repeated "Internet's Firewall" debate. > Its about containing a potential worm/virus outbreak. Call it a network > wide quarantine. surely you realize that this discussion is not about civil rights and the constitution, but ab

RE: zotob - blocking tcp/445

2005-08-16 Thread Church, Chuck
On Mon, 15 Aug 2005, Church, Chuck wrote: > > > >'enterprise security folks' are probably not the issue... The fact > remains > >that lots of folks DO do this :( There are quite a few folks between > >'consumer' and 'enterprise' that do all manner of dumb things on the > >Internet (where 'd

Re: zotob - blocking tcp/445

2005-08-16 Thread Gadi Evron
and again I point to the above rules. What your network can't handle 'scanning wise' is completely different from what the network I work on can handle. If your network is being jeopardized by some level of scanning they fix that, but that is a local decision. Blindly stating "large isps filter

Re: zotob - blocking tcp/445

2005-08-16 Thread Christopher L. Morrow
On Tue, 16 Aug 2005, Daniel Senie wrote: > At 12:46 AM 8/16/2005, Christopher L. Morrow wrote: > > > >On Tue, 16 Aug 2005, Gadi Evron wrote: > > > > > > Randy Bush wrote: > > > I'm not nearly confident enough to decide on behalf of almost > > > billion other people how they should benefi

Re: zotob - blocking tcp/445

2005-08-16 Thread Sean Donelan
The sky is falling, or never mind. AV vendor press releases are always amusing to read. http://news.com.com/Zotob+worm+finds+its+path+limited/2100-7349_3-5833777.html?tag=nefd.top As of Monday morning on the West Coast, the original Zotob.A had infected about 50 computers worldwide, and t

Re: zotob - blocking tcp/445

2005-08-16 Thread Christopher L. Morrow
On Tue, 16 Aug 2005, Joe Maimon wrote: > > > Christopher L. Morrow wrote: > > > > On Mon, 15 Aug 2005, [EMAIL PROTECTED] wrote: > > > > > >> > >>NetBIOS was never meant to be a WAN protocol, so no problem > >>in blocking it. > > > > > > rule #1: do not be the Internet's Firewall > > rule #2: see

Re: zotob - blocking tcp/445

2005-08-16 Thread Daniel Senie
At 12:46 AM 8/16/2005, Christopher L. Morrow wrote: On Tue, 16 Aug 2005, Gadi Evron wrote: > > Randy Bush wrote: > I'm not nearly confident enough to decide on behalf of almost > billion other people how they should benefit from the Internet > and how not to. > >>> > >>>thanks for

Re: zotob - blocking tcp/445

2005-08-16 Thread MARLON BORBA
Jiri, Rommon's site does not state clearly if the product is a network appliance (as it appears to be since its interface is web-based) or a software-only product. Abraços, Marlon Borba, CISSP. -- Nova campanha: Centro de Resposta a Incidentes de Segurança da Justiça Federal - Vamos criar! --

Re: zotob - blocking tcp/445

2005-08-16 Thread Petri Helenius
Joe Maimon wrote: This is network self preservation. Otherwise the garbage will eventually suffocate us all. It's like cancer initially was treated with drugs and equipment which did serious damage to the whole body, killing many in the process and today the methods are much more targete

Re: zotob - blocking tcp/445

2005-08-16 Thread Sane Jiri
Randy, > though http://www.rommon.com/sandbox.html looks to be a > commercial product (and hence the spawn of evil:-), has > anyone got success/failure stories? it looks to speak > directly to this issue. We have been using rommon for years now and are quite happy with it. It has radically decr

Re: zotob - blocking tcp/445

2005-08-16 Thread Joe Maimon
Christopher L. Morrow wrote: On Mon, 15 Aug 2005, [EMAIL PROTECTED] wrote: NetBIOS was never meant to be a WAN protocol, so no problem in blocking it. rule #1: do not be the Internet's Firewall rule #2: see rule #1 Surely we realize that this discussion is not concerning the oft repe

Re: zotob - blocking tcp/445

2005-08-16 Thread Randy Bush
though http://www.rommon.com/sandbox.html looks to be a commercial product (and hence the spawn of evil:-), has anyone got success/failure stories? it looks to speak directly to this issue. randy

Re: zotob - blocking tcp/445

2005-08-16 Thread sthaug
> If ISPs really wanted to make the Internet better for Corporate America, > I guess they'd unplug most of Asia...not block a port here and there > (but that isn't exactly acceptable). If I (working for an ISP in Norway) wanted to make the Internet better for my customers, I'd unplug lots of U.S.

RE: zotob - blocking tcp/445

2005-08-15 Thread Erik Amundson
ECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Gadi Evron Sent: Tuesday, August 16, 2005 12:58 AM To: Christopher L. Morrow Cc: nanog@merit.edu Subject: Re: zotob - blocking tcp/445 [snip arguments] > Do not become the internet firewall for your large customer base... > it's bad. > Oka

Re: zotob - blocking tcp/445

2005-08-15 Thread Gadi Evron
[snip arguments] Do not become the internet firewall for your large customer base... it's bad. Okay, so please allow me to alter the argument a bit. Say we agreed on: 1. Security is THEIR (customers') problems, not yours. 2. You are not the Internet's firewall. That would mean you would st

Re: zotob - blocking tcp/445

2005-08-15 Thread Valdis . Kletnieks
On Mon, 15 Aug 2005 20:05:30 MDT, Shane Amante said: > Leaf network filtering (or not) is largely solved. Ahem. :) If this was a "solved" problem, we'd not be having a thread about a zotob worm. There's a *very* large gap between "the clued know of a range of suitable solutions" and "the great

Re: zotob - blocking tcp/445

2005-08-15 Thread Christopher L. Morrow
On Tue, 16 Aug 2005 [EMAIL PROTECTED] wrote: > On Mon, 15 Aug 2005 20:05:30 MDT, Shane Amante said: > > > Leaf network filtering (or not) is largely solved. > > Ahem. :) > > If this was a "solved" problem, we'd not be having a thread about a zotob > worm. > thank you.

Re: zotob - blocking tcp/445

2005-08-15 Thread Christopher L. Morrow
On Tue, 16 Aug 2005, Gadi Evron wrote: > > Randy Bush wrote: > I'm not nearly confident enough to decide on behalf of almost > billion other people how they should benefit from the Internet > and how not to. > >>> > >>>thanks for that! > >> > >>Indeed. Also see > >>http://www.iab.org

Re: zotob - blocking tcp/445

2005-08-15 Thread Gadi Evron
Randy Bush wrote: I'm not nearly confident enough to decide on behalf of almost billion other people how they should benefit from the Internet and how not to. thanks for that! Indeed. Also see http://www.iab.org/documents/docs/2003-10-18-edge-filters.html as i just replied to a private m

RE: zotob - blocking tcp/445

2005-08-15 Thread Christopher L. Morrow
On Mon, 15 Aug 2005, Church, Chuck wrote: > > > >'enterprise security folks' are probably not the issue... The fact > remains > >that lots of folks DO do this :( There are quite a few folks between > >'consumer' and 'enterprise' that do all manner of dumb things on the > >Internet (where 'dumb'

RE: zotob - blocking tcp/445

2005-08-15 Thread Church, Chuck
>'enterprise security folks' are probably not the issue... The fact remains >that lots of folks DO do this :( There are quite a few folks between >'consumer' and 'enterprise' that do all manner of dumb things on the >Internet (where 'dumb' is equivalent to running smb shares across the >public n

Re: zotob - blocking tcp/445

2005-08-15 Thread Randy Bush
> While its not uncommon to run SMB/Windows file system drive mounts across > private WANs, doing so across the Internet, on a non-encrypted tunnel, is > the equivalent of running with scissors. yep. agree. but, as it does not damage the track, and only opens the runner to harm, as the track ma

Re: zotob - blocking tcp/445

2005-08-15 Thread Christopher L. Morrow
On Mon, 15 Aug 2005, Daniel Golding wrote: > > > On 8/15/05 4:46 PM, "Randy Bush" <[EMAIL PROTECTED]> wrote: > > > > I'm not nearly confident enough to decide on behalf of almost > billion other people how they should benefit from the Internet > and how not to. > >>> thanks for th

Re: zotob - blocking tcp/445

2005-08-15 Thread Daniel Golding
On 8/15/05 4:46 PM, "Randy Bush" <[EMAIL PROTECTED]> wrote: > I'm not nearly confident enough to decide on behalf of almost billion other people how they should benefit from the Internet and how not to. >>> thanks for that! >> Indeed. Also see >> http://www.iab.org/documents/doc

Re: zotob - blocking tcp/445

2005-08-15 Thread Shane Amante
Chris, This isn't directed at you, just adding my 2 cents to the thread ... On Aug 15, 2005, at 3:29 PM, Christopher L. Morrow wrote: On Mon, 15 Aug 2005, [EMAIL PROTECTED] wrote: NetBIOS was never meant to be a WAN protocol, so no problem in blocking it. rule #1: do not be the Internet's F

Re: zotob - blocking tcp/445

2005-08-15 Thread Christopher L. Morrow
) welchia/nachi - how can I ping monitor my remote sites? ymmv. > > For example: grc.com/su-techzone1.htm > > scott > > - Original Message Follows - > From: Gadi Evron <[EMAIL PROTECTED]> > To: nanog list > Subject: zotob - blocking tcp/445 > Date: Mo

Re: zotob - blocking tcp/445

2005-08-15 Thread Randy Bush
>>> I'm not nearly confident enough to decide on behalf of almost >>> billion other people how they should benefit from the Internet >>> and how not to. >> thanks for that! > Indeed. Also see > http://www.iab.org/documents/docs/2003-10-18-edge-filters.html as i just replied to a private message

Re: zotob - blocking tcp/445

2005-08-15 Thread Scott Weeks
- Original Message Follows - From: Saku Ytti <[EMAIL PROTECTED]> To: nanog list Subject: Re: zotob - blocking tcp/445 Date: Mon, 15 Aug 2005 22:22:10 +0300 > On (2005-08-15 18:51 +), [EMAIL PROTECTED] wrote: > > > NetBIOS was never meant to be a WAN protocol, so

Re: zotob - blocking tcp/445

2005-08-15 Thread Steven M. Bellovin
In message <[EMAIL PROTECTED]>, Randy Bush writes: > >> I'm not nearly confident enough to decide on behalf of almost >> billion other people how they should benefit from the Internet >> and how not to. > >thanks for that! Indeed. Also see http://www.iab.org/documents/docs/2003-10-18-edge-filter

Re: zotob - blocking tcp/445

2005-08-15 Thread Saku Ytti
On (2005-08-15 09:28 -1000), Randy Bush wrote: > > There are real solutions to the problem, which include monitoring > > the end-user traffic and do traffic steering for infected hosts > > to a web page thats helps solving their problem. > > for we who are under-clued, do you have a url for sug

Re: zotob - blocking tcp/445

2005-08-15 Thread Randy Bush
> I'm not nearly confident enough to decide on behalf of almost > billion other people how they should benefit from the Internet > and how not to. thanks for that! > There are real solutions to the problem, which include monitoring > the end-user traffic and do traffic steering for infected host

Re: zotob - blocking tcp/445

2005-08-15 Thread Saku Ytti
vron <[EMAIL PROTECTED]> > To: nanog list > Subject: zotob - blocking tcp/445 > Date: Mon, 15 Aug 2005 21:51:43 +0200 > > I heard from several different big ISP's that to stop the > > spread of the worm they now block tcp/445. I suppose it > > works. > > > > Gadi. > -- ++ytti

Re: zotob - blocking tcp/445

2005-08-15 Thread [EMAIL PROTECTED]
NetBIOS was never meant to be a WAN protocol, so no problem in blocking it. For example: grc.com/su-techzone1.htm scott - Original Message Follows - From: Gadi Evron <[EMAIL PROTECTED]> To: nanog list Subject: zotob - blocking tcp/445 Date: Mon, 15 Aug 2005 21:51:43 +0200 >

zotob - blocking tcp/445

2005-08-15 Thread Gadi Evron
I heard from several different big ISP's that to stop the spread of the worm they now block tcp/445. I suppose it works. Gadi.