Re: TCP intercept?

2001-04-22 Thread Alex Pilosov

In cisco terminology, 'tcp intercept' is what the 'ip and tcp reassembly'
part of ipnat does (without port/address rewriting). For example, a router
in the middle which is doing the intercept will have to buffer/reassemble
tcp stream and only forward packets after they are confirmed good.

Example: packets with a wrong sequence number will be bounced at the
router. On ciscos,  tcp-intercept  can also rate-limit syn packets...

I'm not sure if it can be enabled in ipnat separately, but hell, if
someone wants to do it...

On Sun, 22 Apr 2001, Andrew R. Reiter wrote:

> 
> What's TCP intercept?
> 
> On Mon, 23 Apr 2001, E.B. Dreger wrote:
> 
> > Greetings all,
> > 
> > I'm no kernel hacker, and trying to think of useful little projects to
> > change that. ;-)
> > 
> > AFAIK, FreeBSD lacks support for TCP intercept.  Is anyone already working
> > on this?  Would it be of interest to anyone?  My initial thoughts are that
> > it should be implemented in the same neighborhood as stateful firewall
> > code, as the two are rather closely related.
> > 
> > 
> > Eddy
> > 
> > ---
> > 
> > Brotsman & Dreger, Inc.
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> > 
> > Phone: (316) 794-8922
> > 
> > ---
> > 
> > 
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> > 
> 
> *-.
> | Andrew R. Reiter 
> | [EMAIL PROTECTED]
> | "It requires a very unusual mind
> |   to undertake the analysis of the obvious" -- A.N. Whitehead
> 
> 
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> 


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Re: TCP intercept?

2001-04-22 Thread Andrew R. Reiter


What's TCP intercept?

On Mon, 23 Apr 2001, E.B. Dreger wrote:

> Greetings all,
> 
> I'm no kernel hacker, and trying to think of useful little projects to
> change that. ;-)
> 
> AFAIK, FreeBSD lacks support for TCP intercept.  Is anyone already working
> on this?  Would it be of interest to anyone?  My initial thoughts are that
> it should be implemented in the same neighborhood as stateful firewall
> code, as the two are rather closely related.
> 
> 
> Eddy
> 
> ---
> 
> Brotsman & Dreger, Inc.
> EverQuick Internet / EternalCommerce Division
> 
> Phone: (316) 794-8922
> 
> ---
> 
> 
> To Unsubscribe: send mail to [EMAIL PROTECTED]
> with "unsubscribe freebsd-hackers" in the body of the message
> 

*-.
| Andrew R. Reiter 
| [EMAIL PROTECTED]
| "It requires a very unusual mind
|   to undertake the analysis of the obvious" -- A.N. Whitehead


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Re: adduser bikeshed

2001-04-22 Thread gerald stoller

>From: Alfred Perlstein <[EMAIL PROTECTED]>
>To: Adrian Chadd <[EMAIL PROTECTED]>
>CC: [EMAIL PROTECTED]
>Subject: Re: adduser bikeshed
>Date: Fri, 20 Apr 2001 05:29:31 -0700
>
>* Adrian Chadd <[EMAIL PROTECTED]> [010420 05:22] wrote:
> >
> > http://www.freebsd.org/~adrian/adduser.patch
> >
> > It adds an option which enables the password that is created.
> > "enabling" means "don't put a * in front". Its aimed for accounts
> > which will use non-password authentication (eg RSA/DSA).
> > Its also aimed at sysadmins who want to create accounts but have
> > them automatically disabled (think university admins who create
> > shell accounts for users but want them to do training BEFORE
> > enabling said account..)
> >
> > Now, the bikeshed: what should the option be?
> > "Enable account at creation" isn't very descriptive and can be
> > confusing.
>
>I requested this feature and I'm thinking that the
>   "Use passwords (y/n) [y]: "
>
>should be changed to:
>   "Use password based authentication and enable account? (y/n)"
>   if "n"
> "Do you wish to disallow password passed authentication? (y/n)"
  This sounds like just knowing the account ID is enough to get
you into the computer.  Why not ask (more positively) "Do you wish
to use a query/response system?" or some such thing?
> if "n"
>   "Use an empty password? (y/n)"
>   if "y"
> "Are you damn sure you want to do that? (n/n)"
>
>heh, thanks for doing this btw.
>
>
>--
>-Alfred Perlstein - [[EMAIL PROTECTED]]
>http://www.egr.unlv.edu/~slumos/on-netbsd.html
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TCP intercept?

2001-04-22 Thread E.B. Dreger

Greetings all,

I'm no kernel hacker, and trying to think of useful little projects to
change that. ;-)

AFAIK, FreeBSD lacks support for TCP intercept.  Is anyone already working
on this?  Would it be of interest to anyone?  My initial thoughts are that
it should be implemented in the same neighborhood as stateful firewall
code, as the two are rather closely related.


Eddy

---

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EverQuick Internet / EternalCommerce Division

Phone: (316) 794-8922

---


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timmer for SYN

2001-04-22 Thread Alwyn Goodloe

I just need to make sure that I understand the code correctly in the TCP
stack. (We are trying to see how long the system waits before a SYN gets
retransmitted.)

 When a SYN is sent, a keepalive timer is set with using the
TCPTV_KEEPALIVEINTVL  = 75hz (??ms - escapes me at the moment). So an ack
must be received in this time frame???

  This isnot the usual dynamic tretransmission timmer which might make
sense for SYN packts.

  It seems like a retransmission timer should be set?? That's why I'm
posing the question. 

 Alwyn Goodloe
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Click on to meet someone you Click with

2001-04-22 Thread Introsearch.Com
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Click on to meet someone you Click with

2001-04-22 Thread Introsearch.Com
Title: Click on to meet someone you Click with








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Re: mozilla package dumps core

2001-04-22 Thread Hajimu UMEMOTO

> On Sat, 21 Apr 2001 18:25:04 -0700 (PDT)
> Ian Kallen <[EMAIL PROTECTED]> said:

spidaman> Anyone noticed the mozilla-0.8.1 package core dumping on 4.2-RELEASE and
spidaman> have a fix for it?

You should upgrade your box to 4.3-RELEASE.

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Re: thttpd hack for sendfile and accept filters.

2001-04-22 Thread David O'Brien

On Sat, Apr 21, 2001 at 03:19:02PM -0700, Kris Kennaway wrote:
> http://people.freebsd.org/~kris/thttpd-2.19+kq.patch

Commit them to the port! :-)

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Re: thttpd hack for sendfile and accept filters.

2001-04-22 Thread Kris Kennaway

On Sat, Apr 21, 2001 at 07:42:26PM -0700, David O'Brien wrote:
> On Sat, Apr 21, 2001 at 03:19:02PM -0700, Kris Kennaway wrote:
> > http://people.freebsd.org/~kris/thttpd-2.19+kq.patch
> 
> Commit them to the port! :-)

Yeah, I should.  I should also submit them back to the author :-)

Kris
 PGP signature


Upgrading OpenSSL/OpenSSH

2001-04-22 Thread q

Somebody can help me, how to upgrade OpenSSL/OpenSSH to
latest version at FreeBSD 4.2 / 4.3 ?
Thank's.

Q

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mozilla package dumps core

2001-04-22 Thread Ian Kallen


Anyone noticed the mozilla-0.8.1 package core dumping on 4.2-RELEASE and
have a fix for it?
Here's the gdb output:
Program received signal SIGSEGV, Segmentation fault.
0x48158f9a in nsThreadPoolRunnable::Run ()
   from /usr/X11R6/lib/mozilla/./libxpcom.so

cheers,
-Ian

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Re: thttpd hack for sendfile and accept filters.

2001-04-22 Thread Mike Silbersack


On Sat, 21 Apr 2001, Kris Kennaway wrote:

> On Sat, Apr 21, 2001 at 07:42:26PM -0700, David O'Brien wrote:
> > On Sat, Apr 21, 2001 at 03:19:02PM -0700, Kris Kennaway wrote:
> > > http://people.freebsd.org/~kris/thttpd-2.19+kq.patch
> >
> > Commit them to the port! :-)
>
> Yeah, I should.  I should also submit them back to the author :-)
>
> Kris

Might not be necessary now.  An excerpt from the 2.21 changelog:

- kqueue support, from Niels Provos.
- Use accept filtering if available.

Mike "Silby" Silbersack


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