Thank you, Comcast.
Jason_Livingood at comcast.com
Fri Feb 26 19:32:10 UTC 2016
On 2/26/16, 11:44 AM, "Blake Hudson" <blake at ispn.net<mailto:blake at ispn.net>> wrote:
Jason, how do you propose to block SSDP without also blocking legitimate traffic as well (since SSDP uses a port > 1024 and is used as part of the ephemeral port range on some devices) ?
As Roland suggested, very likely via UDP/1900. This will obviously be disclosed in advance to customers and tested thoroughly. I believe a few other ISPs have already taken this step.
And is this practice Open Internet friendly?
Port blocking is considered a form of reasonable network management provided it can be justified by security or operational stability reasons. Of course it must also be transparently disclosed and so on.
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