Re: Question about IP

2007-03-10 Thread Steve Welham
Akin Nomad wrote: Which of these IP addresses you will not find allocated to PC, which can work in internet through IP protocol? (you can choose only one variant) a: 192.168.0.3 b: 230.30.3.3 c: 2001:16c8:ffd7::b:33.255.3.2 d: 2001:16d8:ffd7::405 e: 10.40.20.0 f: fe80::2c0:26ff:2001:16d8

Re: Crash Report - Desired Info Quality?

2006-09-25 Thread Steve Welham
Would this be acceptable for filing a crash report, or is this out of your scope? If you can type in the text, that should be fine. Don't expect multiple developers to try and make head or tail of a .jpg though... As mentioned here recently, if the machine is rebooted rather than

Re: ftp-proxy

2006-09-14 Thread Steve Welham
In the passive modes session, i counted 4 pf rules being added, as also in the active modes. But reading ftp-proxy(8) i can see the following reference: snip excerpt from man page I.e., two rules for active mode and three for passive mode. I could not understand what happened to the others

Re: pf table confusion

2006-09-09 Thread Steve Welham
I'm stuck on some obvious pf table error but I can't see it. snip ## Tables (File content shown in brackets) table admins file /etc/tAdmins ( 192.168.0.3 ) table managers file /etc/tManagers (192.168.0.2) table operators file /etc/tOperators (192.168.0.128) table http-managers file

Re: RDR and NAT Combination with a single interface

2006-08-10 Thread Steve Welham
The painless way to do this is with webservers on non-routable addresses, NAT and two interfaces. Is that out of the question? In any case man pf.conf says: Redirections cannot reflect packets back through the interface they arrive on, they can only be redirected to hosts connected to different

Re: Need help with dns/pf/tcpdump

2006-07-24 Thread Steve Welham
ns.foo.bar is a dns slave that makes AXFR zone transfer from my server (mybox). Why is the traffic blocked on the first lines? What kind of traffic is that? Perhaps I don't understand DNS fully, but I thought zone transfers were made using TCP only, and ordinary queries UDP. Zone transfers

Re: scrub reassemble tcp and nat causes problems with some sites

2006-07-24 Thread Steve Welham
Get tcpdumps on both router interfaces with and without the reassemble tcp option. Do this for a similar file on both a working website and broken (ebay) website. On both router interfaces? Wouldn't the external if be enough? You're probably right. But my theory is that if you're going to

Re: scrub reassemble tcp and nat causes problems with some sites

2006-07-19 Thread Steve Welham
Unfortunately I cannot determine why only some sites have troubles and that's why I seeking advice here on howto further diagnose the problem. Any hints are appreciated! It's a stab in the dark but I would start with the assumption that some sites are using server load balancing and that

Re: Change MTU size TCP/IP Packets for 'black hole routers' withi n B SD 3.8 possible ?

2006-06-28 Thread Steve Welham
so, the ping is ok when its not going trough the tunnel...but via the tunnel, the MTU size sinks to 1330 max. How to get that not to sink ? You probably can't - your VPN tunnel is adding IP and IPsec headers which cause packets to grow beyond the DSL provider's MTU. (BTW some DSL services

Re: To forward, or not to forward

2006-05-13 Thread Steve Welham
My goal with the bridge is to filter all traffic coming in from the outside world, while allowing servers my servers behind the bridge to connect freely even if their traffic has to travel out to the router and back(keep state?). My point of confusion is whether or not to turn on

Re: PF question : set block-policy drop : spoofed ip (NAT'ed) elicits icmp unreachable

2006-05-10 Thread Steve Welham
# tcpdump -n -i sis2 'icmp' 19:21:05.848459 wan_if.ip external.host: icmp: echo request 19:21:05.868202 external.host wan_if.ip: icmp: echo reply 19:21:05.868499 wan_if.ip external.host: icmp: host wan_if.ip unreachable I was obviously expecting the first two lines but I assumed that PF

Re: Transparent Bridge fail-over?

2006-05-05 Thread Steve Welham
I have never setup STP but if you were to use a hub you are only moving the convegence problem to the devices on the end, be it a router or clients. Instead of a few next hop mac updates between a switch and the STP bridges , all the devices would need to update thus increasing total

Re: Transparent ISP proxy problem or PF problem

2005-12-07 Thread Steve Welham
I tried to connect the cable for the internet directly to one of the client machines behind the firewall (Debian GNU/Linux 3.1) and the site loads perfectly, so I came to the conclusion that my PF rules are blocking the packets. So, I left a minimal PF setup (pass all keep state + NAT),

Re: read-only storage media

2005-07-01 Thread Steve Welham
Some hard disks have a write protect jumper. I've got an old Seagate Barracuda (ST3217N) that has this - although it's not something I've ever tried to use. Steve -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Matt Garman Sent: 01 July 2005 16:06 To: