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Message-ID: <1423713974.4942.9.camel@edumazet-glaptop2.roam.corp.google.com> Date: Wed, 11 Feb 2015 20:06:14 -0800 From: Eric Dumazet <eric.dumazet@...il.com> To: Tom Marshall <tom@...gn.com> Cc: netdev@...r.kernel.org Subject: Re: [PATCH] net: ip: Do not allow connection to remote port zero On Wed, 2015-02-11 at 16:58 -0800, Tom Marshall wrote: > Port zero is reserved according to IANA. > > Note UDP sendto is already disallowed if dport is zero. I have no idea why we should prevent such thing. There is nothing wrong sending a TCP frame with dport=0, even if practically it is not possible to setup a listener on such port using BSD API. Maybe some tools are actually using this already to send probes... -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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