TCP Sequence numbers changing

2009-10-12 Thread Oliver Humpage
Hi, I have a suspicion that route-to is changing sequence numbers on TCP packets. My pf-based router is set up so that packets travelling between internal hosts and the internet get routed through a separate IPS box: imagine the IPS as basically a plugin to the router, and packets get

Re: NAT *before* routing decision

2004-10-27 Thread Oliver Humpage
, in which case do some kind of binat? Or perhaps I missed the point. I usually do :) Oliver. -- Oliver Humpage ICT Co-ordinator, Watershed Media Centre -- +44 (0)117 9276444 E-mails received are assumed to be for my attention, to do with as I wish. No responsibility is accepted if communications

Re: Keep State

2004-10-18 Thread Oliver Humpage
on 18/10/04 1:35 am, Trevor Talbot at [EMAIL PROTECTED] wrote: On Sunday, Oct 17, 2004, at 14:15 US/Pacific, [EMAIL PROTECTED] wrote: On So, 17 Okt 2004, Oliver Humpage wrote: State only works on the interface on which it was created. You will need another keep state rule on the external

Re: FTP clients behind PF can connect to ftp serves but cannot list files why?

2004-09-29 Thread Oliver Humpage
between passive and active FTP. Then make sure that you're allowing all the ports out from both interfaces (49152 to 65534 is standard, but you may want to open all high-numbered ports) for the ftp-proxy user. Oliver. -- Oliver Humpage ICT Co-ordinator, Watershed Media Centre -- +44 (0)117 9276444 E

Re: How do I change my firewall ports to stealth mode?

2004-09-28 Thread Oliver Humpage
, how else can it know if there's an existing relationship with the remote server...? Oliver. -- Oliver Humpage ICT Co-ordinator, Watershed Media Centre -- +44 (0)117 9276444 E-mails received are assumed to be for my attention, to do with as I wish. No responsibility is accepted if communications

Routing out of 1-host networks

2004-09-08 Thread Oliver Humpage
missing something obvious - any takers? Thanks, Oliver. -- Oliver Humpage ICT Co-ordinator, Watershed Media Centre -- +44 (0)117 9276444 E-mails received are assumed to be for my attention, to do with as I wish. No responsibility is accepted if communications are sent to me in error

Re: Routing out of 1-host networks

2004-09-08 Thread Oliver Humpage
on 8/9/04 12:18 pm, Oliver Humpage at [EMAIL PROTECTED] wrote: I'm sure I'm missing something obvious - any takers? I was - I was keeping state on packets from $adsl_if, so they totally bypassed my route-to rule on the way out of $leased_line_if. Oliver. -- Oliver Humpage ICT Co-ordinator

Re: scrub and state questions

2004-09-06 Thread Oliver Humpage
server behind your firewall), then you'll need to use port forwarding or a rdr. Or have I misunderstood? Oliver. -- Oliver Humpage ICT Co-ordinator, Watershed Media Centre -- +44 (0)117 9276444 E-mails received are assumed to be for my attention, to do with as I wish. No responsibility

Re: scrub and state questions

2004-09-06 Thread Oliver Humpage
on 6/9/04 11:18 am, Mipam at [EMAIL PROTECTED] wrote: On Mon, 6 Sep 2004, Oliver Humpage wrote: on 6/9/04 9:21 am, Mipam at [EMAIL PROTECTED] wrote: Hmm i see, so for outbound traffic over $ext_if 1) nat 2) filtering And for inbound traffic first filtering and then nat. For ipf its

Re: scrub and state questions

2004-09-05 Thread Oliver Humpage
yet :) Oliver. -- Oliver Humpage ICT Co-ordinator, Watershed Media Centre -- +44 (0)117 9276444 E-mails received are assumed to be for my attention, to do with as I wish. No responsibility is accepted if communications are sent to me in error. This disclaimer has as much legal status as yours.

2 Masters despite advskew

2004-08-26 Thread Oliver Humpage
and internally) using tcpdump. Has anyone got *any* ideas why internally there's only one master, yet externally there are two? This is driving me nuts :) Many thanks, Oliver. -- Oliver Humpage ICT Co-ordinator, Watershed Media Centre -- +44 (0)117 9276444 E-mails received are assumed to be for my

Re: 2 Masters despite advskew

2004-08-26 Thread Oliver Humpage
on 26/8/04 5:27 pm, Ryan McBride at [EMAIL PROTECTED] wrote: On Thu, Aug 26, 2004 at 04:29:04PM +0100, Oliver Humpage wrote: Has anyone got *any* ideas why internally there's only one master, yet externally there are two? This is driving me nuts :) You might get some indication as to what