Re: NKEs
Re: NKEs
- Subject: Re: NKEs
- From: "Justin C. Walker" <email@hidden>
- Date: Tue, 20 Aug 2002 10:39:57 -0700
On Monday, August 19, 2002, at 09:30 , devdrvr.net Multi-Platform SW
wrote:
Need to write one for on the fly encryption commercial project. Are
there
examples for how I might hook into the running packet stream and be in
kernel space?
There are several NKE examples in the Darwin repository:
TCPLogger - an example of a "socket NKE" that grabs every incoming
and outgoing TCP connection, and logs the start and
termination time, along with the number of packets
(as best it can tell) and bytes transmitted in each
direction
SharedIP - an "interface filter" NKE that is used to support the
sharing of an IP address between Mac OS X and Classic
to allow Classic to use its own IP stack without (much)
modification. This NKE grabs all incoming and outgoing
traffic that uses a specified network device (ethernet).
VLan - a "psuedo network device" NKE that grabs all the traffic
through a specified device, acting like a protocol on the
bottom,
and a device on the top, to emulate a (port on a) VLAN switch.
IPFirewall - a "port" of the freebsd "ipfw" implementation, to work
with Darwin and the SharedIP implementation, so it
protects Classic networking as well as Mac OS X/Darwin
traffic.
There's also documentation in
file://Developer/Documentation/Darwin/Extensions/NKE.pdf.
Regards,
Justin
--
Justin C. Walker, Curmudgeon-At-Large *
Institute for General Semantics | Men are from Earth.
| Women are from Earth.
| Deal with it.
*--------------------------------------*-------------------------------*
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| | >NKEs (From: "devdrvr.net Multi-Platform SW" <email@hidden>) |