full-disclosure - SQL Slammer

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From: dufresne at winternet.com (Ron DuFresne)
Subject: SQL Slammer - lessons learned

I'm suspecting then alot of you must be just livid that most ISP' and
backbone providers are blocking those udp packets to those borked M$-sql
servers then?

There's certain traffic that just does not need to be passed beyond
certain borders, and can have bad effects if it does or is exposed.


Thanks,

Ron DuFresne


On 6 Feb 2003, Nicob wrote:

> On Wed, 2003-02-05 at 16:38, Paul Schmehl wrote:
>
> > Can you think of a legitimate reason why ISPs should allow ports
> > 135-139/TCP/UDP to be open to the Internet?  How about port 445/UDP?
>
> IMO, it's not to the ISP to choose wich ports and services should I use.
> I pay it (sort of) for a pipe running from my home-computer to the wild
> Internet and *that's all*.
>
> I don't want some "services" like transparent proxies, AV scanning at
> the mail relay or port filtering. I just want a pipe ...
>
> > What about the ISPs whose policy it is to not allow
> > customers to run servers?
>
> That's another problem.
>
> If I ask for a pipe, I want a pipe.
> If I ask for a discount ADSL access with limited amount of trafic and no
> allowed hosting (HTTP, FTP, SMTP, SSH, ...), the ISP can restrict the
> inbound ports.
>
> If the next big vuln/worm is a SSH one, would you agree with an ISP
> blocking inbound TCP/22 and forbidding to users to connect to their
> home-LAN to check mails, get some files, start the coffe-maker or manage
> downloads ?
>
>
> Nicob
>
>
>
>
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