Re: strange network conversation

2002-04-10 Thread Crist J. Clark
On Wed, Apr 10, 2002 at 11:06:44AM +0200, Paulius Bulotas wrote: > Hello list, > > I'm seeing strange? networking behaviour with my FreeBSD server, and it > seems that this list is tne right to ask ;) > Suppose, there is outgoing connection for whom dynamic rule is created > (that's how I noticed

RE: Need help. A system stops responding to network requests periodically.

2002-04-10 Thread Arkadi Kosmynin
Hi Bill, Thanks for a hint. My network consists of three computers connected via a 10 Mbps hub. I don't think that this is a hardware problem. I never experienced any networking problems except in this situation. Besides, netstat shows very low number of bad segments and segment retransmissions

Re: TCP Timestamp option?

2002-04-10 Thread Mike Silbersack
On Wed, 10 Apr 2002, ipver4 wrote: > Thanks for the explanation. > > It seems since version 4.4 that kernel net.inet.tcp.rfc1323 is set to 1 by > default, thus causing all the TCP connections to use the RFC1323 extension. > > The effects are: > > 1. bigger TCP header. > 2. more processing time a

Re: TCP Timestamp option?

2002-04-10 Thread ipver4
Thanks for the explanation. It seems since version 4.4 that kernel net.inet.tcp.rfc1323 is set to 1 by default, thus causing all the TCP connections to use the RFC1323 extension. The effects are: 1. bigger TCP header. 2. more processing time at sending and receiving hosts. 3. VJ TCP/IP header c

How can I use ng bpf

2002-04-10 Thread Yidan Zhou
Hi all, I want to set up a bridge with filtering function on Freebsd. I checked some webpages which mention that I can ng_bpf to implement filtering. But the freebsd man page of ng_bpf is not clear(especially, how to use ngctl to configure step by step). Has anybody a sample configuration or a e

Re: TCP Timestamp option?

2002-04-10 Thread G. Paul Ziemba
[EMAIL PROTECTED] ("ipver four") writes: >Is there a reason for including the timestamp option on most of the TCP >packets? The TCP timestamp option is used to obtain better round-trip time estimates than can be obtained without, and these estimates turn out to be important in networks with la

RE: Cisco VPN servers.

2002-04-10 Thread Tilman Linneweh
Am Mi, 2002-04-10 um 17.33 schrieb Bromirski, Lukasz: > > > 2. If not, is it possible? > > I dunno. AFAIK, this requires L2TP to be available under FreeBSD. > > Why L2TP? Okay, i misunderstood this. Our VPN Server seems to be configured to connect only with L2TP/IPsec, but cisco websites says

RE: Cisco VPN servers.

2002-04-10 Thread Nelson, Trent .
> -Original Message- > From: Tilman Linneweh [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, April 10, 2002 2:57 PM > To: Nelson, Trent . > Cc: '[EMAIL PROTECTED]' > Subject: Re: Cisco VPN servers. > > Hi, > > Am Di, 2002-04-09 um 20.35 schrieb Nelson, Trent .: > > > > 3. Has anyone

Re: Cisco VPN servers.

2002-04-10 Thread Tilman Linneweh
Hi, Am Di, 2002-04-09 um 20.35 schrieb Nelson, Trent .: > > Few quick questions. > > 1. Has anyone been able to establish a successful VPN connection > between FreeBSD and a Cisco VPN server? Me not, but I would like to know too, if anyone got this running. > 2. If not,

Re: Need help. A system stops responding to network requests periodically.

2002-04-10 Thread Bill Vermillion
On Wed, Apr 10, 2002 at 11:06:09PM +1000, Arkadi Kosmynin spewed forth: > I really can not explain this. We are stress testing a server. We > use the following configuration: the server runs on a FreeBSD box > (or Linux, with a similar effect). A multithreaded tester program > runs on a Win2K box

Need help. A system stops responding to network requests periodically.

2002-04-10 Thread Arkadi Kosmynin
Hello people, I really can not explain this. We are stress testing a server. We use the following configuration: the server runs on a FreeBSD box (or Linux, with a similar effect). A multithreaded tester program runs on a Win2K box and emulates random multiuser activity. The FreeBSD box stops re

strange network conversation

2002-04-10 Thread Paulius Bulotas
Hello list, I'm seeing strange? networking behaviour with my FreeBSD server, and it seems that this list is tne right to ask ;) Suppose, there is outgoing connection for whom dynamic rule is created (that's how I noticed it - ipfw logs denied packets). My 4.4-Release FreeBSD is hostA, something o