Date: Fri, 28 Jan 2011 16:33:55 +0200 From: Ivo Vachkov <ivo.vachkov@gmail.com> To: FreeBSD Net <freebsd-net@freebsd.org> Cc: bz@freebsd.org Subject: Re: Proposed patch for Port Randomization modifications according to RFC6056 Message-ID: <AANLkTinvg5tft8xockuuV9g5QYd36ko9qO4YCvy5bkJ1@mail.gmail.com> In-Reply-To: <4D411CC6.1090202@gont.com.ar> References: <AANLkTi=rF%2BCYiNG7PurPtrwn-AMT9cYEe90epGAJDwDq@mail.gmail.com> <4D411CC6.1090202@gont.com.ar>
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--0015175cb99ae421ce049ae8f559 Content-Type: text/plain; charset=UTF-8 Hello, I would like to thank for the help and for the recommendations. I attach second version of the patch, I proposed earlier, including following changes: 1) All RFC6056 algorithms are implemented. 2) Both IPv4 and IPv6 stacks are modified to use the new port randomization code. 3) There are two variables that can be modified via sysctl: - net.inet.ip.portrange.rfc6056_algorithm - which allows the super user to choose one out of the five possible algorithms. - net.inet.ip.portrange.rfc6056_algorithm5_tradeoff - which allows the super user to modify the trade-off value used in algorithm 5. All values are explicitly checked for correctness before usage. Default values for those variables represent current/legacy port randomization algorithm and proposed values in the RFC itself. Thank you very much. Ivo Vachkov --0015175cb99ae421ce049ae8f559 Content-Type: text/x-patch; charset=US-ASCII; name="20110128-freebsd-RELENG_8-rfc6056.patch" Content-Disposition: attachment; filename="20110128-freebsd-RELENG_8-rfc6056.patch" Content-Transfer-Encoding: base64 X-Attachment-Id: f_gjh6hwl60 ZGlmZiAtciA0ZWEwNzdmNTQ2ZGQgc3JjL3N5cy9uZXRpbmV0L2luX3BjYi5jCi0tLSBhL3NyYy9z eXMvbmV0aW5ldC9pbl9wY2IuYwlGcmkgSmFuIDI4IDEyOjIxOjA4IDIwMTEgKzAyMDAKKysrIGIv c3JjL3N5cy9uZXRpbmV0L2luX3BjYi5jCUZyaSBKYW4gMjggMTY6MTA6MDggMjAxMSArMDIwMApA QCAtODEsNiArODEsOCBAQAogI2luY2x1ZGUgPG5ldGlwc2VjL2tleS5oPgogI2VuZGlmIC8qIElQ U0VDICovCiAKKyNpbmNsdWRlIDxzeXMvbWQ1Lmg+CQorCiAjaW5jbHVkZSA8c2VjdXJpdHkvbWFj L21hY19mcmFtZXdvcmsuaD4KIAogLyoKQEAgLTEwOSw2ICsxMTEsOCBAQAogVk5FVF9ERUZJTkUo aW50LCBpcHBvcnRfc3RvcHJhbmRvbSk7CQkvKiB0b2dnbGVkIGJ5IGlwcG9ydF90aWNrICovCiBW TkVUX0RFRklORShpbnQsIGlwcG9ydF90Y3BhbGxvY3MpOwogc3RhdGljIFZORVRfREVGSU5FKGlu dCwgaXBwb3J0X3RjcGxhc3Rjb3VudCk7CitWTkVUX0RFRklORSh1X2ludCwgaXBwb3J0X3JmYzYw 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