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Re: PF and States

2010-12-03 Thread Ryan McBride
On Thu, Dec 02, 2010 at 11:22:08PM -0500, Godesi wrote:
 1.  Do I need pf for relayd when I am not doing redirects?

I don't think so, but this is easy for you to test...


 2.  How much states can i really have on a box that has 4 gig ram?

More than 100,000. I havn't tested lately (planning to do so soo), but I
would expect somewhere closer to 500,000.


 Is it governed by how much mem is allocated to kernel?

Yes.

 Can I change that?

Not directly. In fact, having too much RAM in your box will COST you
memory, as more kernel memory is used up tracking all your RAM. So
cutting your ram to 2 GB will probably improve the upper limit, though
it doesn't seem that that's the limit you are hitting.


What does 'pfctl -vvsi' show when this problem is happening?



Re: Help with snmpd...

2010-12-03 Thread Pierre-Yves Ritschard
On Thu, Dec 2, 2010 at 10:33 PM, Bales, Tracy tracy.ba...@williams.com
wrote:
 I'm running 4.8 on an i386 platform.  I have snmpd running with 300 custom
 MIB's installed via snmpd.conf.  I've confirmed that they're installed
using
 net-snmp's snmpwalk program.  Each of my MIB's is an integer value...no
 strings.  Question:  Has anyone written their own C code to update/change
the
 MIB values?  If so, could you point me in the direction on how to do this?
 I'm really trying to figure this out for myself so I'm not looking for a
 full-blown solution, just a tip here and there or a simple example!
 FYI...I
 have been studying the OpenBSD C source files for snmpd.c, snmpe.c and
mps.c
 Thanks!



Which snmpd are you talking about ? If you're looking at net-snmp you
can try the pass or pass_persist directives for easy extensions, for
the snmpd that's shipped with openbsd you'll have to patch it.



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soekris + openbsd server buy question

2010-12-03 Thread shwegime
Hello, I'm considering buying a Soekris net5501-70 and install OpenBSD on 
it to make myself a small server and use it as a proxy (ssh tunnel), it 
might serve as backup file sever as well. I guess at the most there will 
be two-three computers connnected at the same time, and there might be 
some streaming video going through, like the videos you find on online 
newspapers. I have googled around, and read that this kind of hardware is 
fine as a router but not so much as a server. Is it true?
Thank you for any 
suggestions.
I was also considering using a netbook for the task. What 
about it?

Thanks in advance.



Re: soekris + openbsd server buy question

2010-12-03 Thread shwegime

On Fri, 3 Dec 2010, Matt Bettinger wrote:


On Fri, Dec 3, 2010 at 5:28 AM,  shweg...@gmail.com wrote:

Hello, I'm considering buying a Soekris net5501-70 and install OpenBSD on it
to make myself a small server and use it as a proxy (ssh tunnel), it might
serve as backup file sever as well. I guess at the most there will be
two-three computers connnected at the same time, and there might be some
streaming video going through, like the videos you find on online
newspapers. I have googled around, and read that this kind of hardware is
fine as a router but not so much as a server. Is it true?
Thank you for any suggestions.
I was also considering using a netbook for the task. What about it?
Thanks in advance.




Hi,

I have an net5501-70 myself and have been using it for last few years
as my gateway.  It can handle a couple of  ipsec connections and
handle  ~5-7 devices connected behind it.  It can get bogged down on
the network interrupts on the card.  Say,  for example when multiple
torrents are running off my DMZ.I really do not think it would act
as a good file server.  I would NOT use a laptop as a file server
either.  My file server I use is OpenBSD on an dell crap box with
mirror raid.  By the way,  I run current on everything.

re,

mb



So, if I use it only for ssh tunneling both soekris and netbook would be 
fine? Of course, it has to be on 24*7.




Re: soekris + openbsd server buy question

2010-12-03 Thread Adam M. Dutko
On Fri, Dec 3, 2010 at 5:28 AM,  shweg...@gmail.com wrote:

 Hello, I'm considering buying a Soekris net5501-70 and install OpenBSD on
 it
 to make myself a small server and use it as a proxy (ssh tunnel), it
 might
 serve as backup file sever as well. I guess at the most there will be
 two-three computers connnected at the same time, and there might be some
 streaming video going through, like the videos you find on online
 newspapers. I have googled around, and read that this kind of hardware is
 fine as a router but not so much as a server. Is it true?
 Thank you for any suggestions.
 I was also considering using a netbook for the task. What about it?
 Thanks in advance.



I own a 45xx series Soekris system which handles DMZ traffic (2 low load
production web servers + RCS repositories, and 3 build systems for MariaDB),
internal traffic (my home network for streaming movies and internet access)
and ssh access to my DMZ just fine.  The specifications for the Soekris
system you mentioned don't lead me to be believe they'd be great for file
server duty.  When I think of file servers I think of fast disk (5501 can
use SATA so that's a plus) coupled with a battery backed RAID controller
with gobs of cache and redundancy somewhere preserving my data in case of
disk failure.  If your disk goes on the 5501 I imagine you're toast unless
you have a continual backup process that doesn't chew your available
bandwidth to zero.


 So, if I use it only for ssh tunneling both soekris and netbook would be
 fine? Of course, it has to be on 24*7.


When I think of these machines and similar ones I think configuration file
backup and restore.  What I mean by that is you should be OK with waking up
one day and finding your machine dead but able to get backup and running in
a less than 20 minutes using a new device and your configuration file
backups.  I am NOT implying Soekris boards are unreliable, I love mine and
would buy more if I needed to, but I am saying that planning for failure
should be one of the first things considered when you're constructing a
critical piece of your home/business network.



Re: soekris + openbsd server buy question

2010-12-03 Thread Patrick Lamaiziere
Le Fri, 3 Dec 2010 19:28:19 +0800 (CST),
shweg...@gmail.com a icrit :

 Hello, I'm considering buying a Soekris net5501-70 and install
 OpenBSD on it to make myself a small server and use it as a proxy
 (ssh tunnel), it might serve as backup file sever as well. I guess at
 the most there will be two-three computers connnected at the same
 time, and there might be some streaming video going through, like the
 videos you find on online newspapers. I have googled around, and read
 that this kind of hardware is fine as a router but not so much as a
 server. Is it true? Thank you for any 
 suggestions.

It depends on the connection, do not expect a 100M/bits link.
I use a net5501 for my all-in-one box (file server (samba), printers
share, router, ...). The file server is not very speed but is enougth
for doing backups. (From time to time, backup the server to an external
usb disk).

 I was also considering using a netbook for the task. What 
 about it?

I don't think a netbook will be reliable running 24/24.

This was my only concern on the net5501, the reliablity of the internal
2.5 disk drive, looks good after 3 years.

Check the soekris-tech mailing list, questions about performances are
often asked.



Re: soekris + openbsd server buy question

2010-12-03 Thread Patrick Lamaiziere
Le Fri, 3 Dec 2010 08:44:43 -0500,
Adam M. Dutko dutko.a...@gmail.com a icrit :

 The specifications for the Soekris system you mentioned don't lead me
 to be believe they'd be great for file server duty.  When I think of
 file servers I think of fast disk (5501 can use SATA so that's a
 plus)

On the net5501 this is not a real SATA, the box uses a PATA-SATA adapter
behind the cs5536 chipset.



Re: soekris + openbsd server buy question

2010-12-03 Thread gimeshwe
On Fri, 3 Dec 2010, Patrick Lamaiziere wrote:

 Le Fri, 3 Dec 2010 19:28:19 +0800 (CST),
 shweg...@gmail.com a C)crit :

 Hello, I'm considering buying a Soekris net5501-70 and install
 OpenBSD on it to make myself a small server and use it as a proxy
 (ssh tunnel), it might serve as backup file sever as well. I guess at
 the most there will be two-three computers connnected at the same
 time, and there might be some streaming video going through, like the
 videos you find on online newspapers. I have googled around, and read
 that this kind of hardware is fine as a router but not so much as a
 server. Is it true? Thank you for any
 suggestions.

 It depends on the connection, do not expect a 100M/bits link.
 I use a net5501 for my all-in-one box (file server (samba), printers
 share, router, ...). The file server is not very speed but is enougth
 for doing backups. (From time to time, backup the server to an external
 usb disk).

 I was also considering using a netbook for the task. What
 about it?

 I don't think a netbook will be reliable running 24/24.

 This was my only concern on the net5501, the reliablity of the internal
 2.5 disk drive, looks good after 3 years.

 Check the soekris-tech mailing list, questions about performances are
 often asked.


Thank you all, I don't need cutting-edge speed, and from what 
you say, Soekris should just be fine. For file server I have not been 
clear, in fact I meant a backup server, so it should probably handle all 
of it quite fine. I'm also checking out a few fanless Atom mini-pcs, but 
at about the same price soekris is probably more fit for the job.



Re: soekris + openbsd server buy question

2010-12-03 Thread Axton
On Fri, Dec 3, 2010 at 8:13 AM, gimes...@gmail.com wrote:

 On Fri, 3 Dec 2010, Patrick Lamaiziere wrote:

  Le Fri, 3 Dec 2010 19:28:19 +0800 (CST),
  shweg...@gmail.com a C)crit :
 
  Hello, I'm considering buying a Soekris net5501-70 and install
  OpenBSD on it to make myself a small server and use it as a proxy
  (ssh tunnel), it might serve as backup file sever as well. I guess at
  the most there will be two-three computers connnected at the same
  time, and there might be some streaming video going through, like the
  videos you find on online newspapers. I have googled around, and read
  that this kind of hardware is fine as a router but not so much as a
  server. Is it true? Thank you for any
  suggestions.
 
  It depends on the connection, do not expect a 100M/bits link.
  I use a net5501 for my all-in-one box (file server (samba), printers
  share, router, ...). The file server is not very speed but is enougth
  for doing backups. (From time to time, backup the server to an external
  usb disk).
 
  I was also considering using a netbook for the task. What
  about it?
 
  I don't think a netbook will be reliable running 24/24.
 
  This was my only concern on the net5501, the reliablity of the internal
  2.5 disk drive, looks good after 3 years.
 
  Check the soekris-tech mailing list, questions about performances are
  often asked.
 

 Thank you all, I don't need cutting-edge speed, and from what
 you say, Soekris should just be fine. For file server I have not been
 clear, in fact I meant a backup server, so it should probably handle all
 of it quite fine. I'm also checking out a few fanless Atom mini-pcs, but
 at about the same price soekris is probably more fit for the job.

 I've been using one of these for the last couple of months and have been
happy with it's performance.  The IPMI capabilities are very nice.

http://www.supermicro.com/products/system/1U/#Atom
http://www.supermicro.com/products/system/1U/#Atom
http://www.supermicro.com/products/system/1U/5015/SYS-5015A-PHF.cfm

The only thing I don't care for on it is the trusted platform module chip.
 The boards have a jumper to disable the chip, but the pins on the
motherboard have been removed, so you can not disable it without some
soldering.



Re: soekris + openbsd server buy question

2010-12-03 Thread Ted Unangst
On Fri, Dec 3, 2010 at 6:28 AM,  shweg...@gmail.com wrote:
 Hello, I'm considering buying a Soekris net5501-70 and install OpenBSD on it
 to make myself a small server and use it as a proxy (ssh tunnel), it might
 serve as backup file sever as well. I guess at the most there will be
 two-three computers connnected at the same time, and there might be some
 streaming video going through, like the videos you find on online
 newspapers. I have googled around, and read that this kind of hardware is
 fine as a router but not so much as a server. Is it true?
 Thank you for any suggestions.
 I was also considering using a netbook for the task. What about it?

the only reason i don't/wouldn't use my soekris as a server (actually,
i do use it as a dns and dhcp server) is limited storage.  a single
2.5in disk is not my ideal backup server configuration.



Re: soekris + openbsd server buy question

2010-12-03 Thread Chris Smith
On Fri, Dec 3, 2010 at 9:37 AM, Axton axton.gr...@gmail.com wrote:
 http://www.supermicro.com/products/system/1U/5015/SYS-5015A-PHF.cfm

I've built up several of the EHF variety for both firewall and server
purposes. The EHF model supersedes the PHF with a smaller board that
provides room to make use of the included riser card. It is not
fanless but the fan can be virtually disabled via the BIOS. The
embedded IPMI support is really superb, providing serial over LAN,
virtual CD  floppy, etc. Intel NIC's with PXE support. Yada, yada,
yada...highly recommended.



Re: PF and States

2010-12-03 Thread dabheeruz
Thanks Ryan! Unfortunately when this happened I was remote and could not 
grab those stats.  But what should I be looking for in term of badness.  
Maybe I can quickly setup something to monitor for particular stat.  
Really appreciate your input.


Thx.

On 12/3/10 12:41 AM, Ryan McBride wrote:

On Thu, Dec 02, 2010 at 11:22:08PM -0500, Godesi wrote:

1.  Do I need pf for relayd when I am not doing redirects?

I don't think so, but this is easy for you to test...



2.  How much states can i really have on a box that has 4 gig ram?

More than 100,000. I havn't tested lately (planning to do so soo), but I
would expect somewhere closer to 500,000.



Is it governed by how much mem is allocated to kernel?

Yes.


Can I change that?

Not directly. In fact, having too much RAM in your box will COST you
memory, as more kernel memory is used up tracking all your RAM. So
cutting your ram to 2 GB will probably improve the upper limit, though
it doesn't seem that that's the limit you are hitting.


What does 'pfctl -vvsi' show when this problem is happening?




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Re: help gateway 4.8

2010-12-03 Thread david carrasco
hi, dear friend both cables ( cable 1 and 2 )  are crossover and is
conectic like this,
and no internet in client, help please

 ADSL (router ext)

 192.168.1.1 ( cable 1 )
|
|
  xl0
  192.168.1.101 ( cable 1)
 gatewayopenbsd4.8-
 xl1
  192.168.0.1( cable 2)
   |
   |
 Client
  192.168.0.10   ( cable 2)

*
2010/12/2, Jan Johansson janj+open...@wenf.org:
 david carrasco dacar...@gmail.com wrote:
 answer your question,
 i believe the problern is static routing setting on all
 cable is okey
 please help, with set up static client,gateway, and router (dsl ext)

 On gateway start tcpdump -i xl1
 
 gateway.my.domain (192.168.0.1) at 00:60:97:be:ca:2a on xl1 static
 ? (192.168.1.1) at 00:1d:0f:fc:95:de on xl0
 *


  then on client start ping
  192.168.0.1. Do you see the packets?
 /
 --- 192.168.0.1 ping statistics ---
 3 packets transmitted, 0 packets received, 100.0% packet loss
 ///


  After you stop the ping run arp -a on both client and gateway.
  Do you see an entry for the other host?
 in gateway
 
 gateway.my.domain (192.168.0.1) at 00:60:97:be:ca:2a on xl1 static
 ? (192.168.1.1) at 00:1d:0f:fc:95:de on xl0
 


 in client
 ///
 nothing out screen
 ///

 I am having a hard time following what you are saying.

 On the gateway run ping 192.168.0.10 when you stop that run
 arp -a in the output you should see one of thease lines:

 This one means your layer 2 such as cable is broken.
 ? (192.168.0.10) at (incomplete) on xl1

 This one means your layer 3 such as packet filter is broken.
  ? (192.168.0.10) at 00:0c:76:bb:00:5a on xl1

 But as another subscriber noted:

 vr0: flags=8843UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST mtu 1500
 media: Ethernet autoselect (none)
 status: no carrier

 and

 xl1: flags=8a43UP,BROADCAST,RUNNING,ALLMULTI,SIMPLEX,MULTICAST mtu 1500
 media: Ethernet autoselect (none)
 status: no carrier

 which means neither your gateway or your client has a working
 cable.

 Are you using a switch or are these machines connected to each
 other with a direct cable? If you are using a direct cable you
 will need a crossover cable as 100baseTX does not support auto
 MDI/MDI-X.



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Re: help gateway 4.8

2010-12-03 Thread Kenneth Gober
On Fri, Dec 3, 2010 at 8:02 PM, david carrasco dacar...@gmail.com wrote:

 hi, dear friend both cables ( cable 1 and 2 )  are crossover and is
 conectic like this,
 and no internet in client, help please

  ADSL (router ext)
 
  192.168.1.1 ( cable 1 )
 |
 |
   xl0
   192.168.1.101 ( cable 1)
  gatewayopenbsd4.8-
  xl1
   192.168.0.1( cable 2)
|
|
  Client
   192.168.0.10   ( cable 2)


I'm guessing the ADSL router is a typical NAT router, and that your OpenBSD
router is *not* configured for NAT.  as a result, the ADSL router is seeing
outbound packets from 192.168.0.10, but doesn't know how to deliver the
inbound responses.  it knows that the 192.168.1/24 network is reachable via
one of its own LAN ports, but I'm guessing that it doesn't know how to reach
the 192.168.0/24 network.

you need a static route defined on the ADSL router telling it that for the
192.168.0/24 network, the next hop router is at 192.168.1.101.

-ken



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Re: help gateway 4.8

2010-12-03 Thread Jan Johansson
david carrasco dacar...@gmail.com wrote:
 hi, dear friend both cables ( cable 1 and 2 )  are crossover
 and is conectic like this, and no internet in client, help
 please

From the ifconfig output it is obvious that there is a problem
with cable 2.

It is either the cable or the network interface card. They should
har lights that should be lit when everything is corret.

For instance are the lights the same on both of xl0
and xl1?

There could also be some kind of issue with auto negotiation. Do
you have any other network equipment at hand that you can use to
check the cable and network cards?

Are you really sure you are using cross over cables? In my
experience ADSL Modems are made like a switch and therefor
has no problem beeing connected to a host directly. Your other
connection is between hosts and therefor (in the 100MBit case)
must use a special cable. You can use 
http://en.wikipedia.org/wiki/Ethernet_crossover_cable 
to verify that you have an crossover cable.