[Maprg] Fwd: Re: Filtering of TCP Keepalive Messages
Hannes Tschofenig <hannes.tschofenig@gmx.net> Sun, 27 March 2016 09:43 UTC
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From: Hannes Tschofenig <hannes.tschofenig@gmx.net>
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Subject: [Maprg] Fwd: Re: Filtering of TCP Keepalive Messages
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Lars kindly pointed me to this group. Maybe someone of you could provide feedback. Ciao Hannes -------- Forwarded Message -------- Subject: Re: Filtering of TCP Keepalive Messages Date: Sun, 27 Mar 2016 07:31:10 +0000 From: Eggert, Lars <lars@netapp.com> To: Hannes Tschofenig <hannes.tschofenig@gmx.net> CC: tsv-dir@ietf.org <tsv-dir@ietf.org> Also ask on MAPRG? On 2016-03-26, at 15:56, Hannes Tschofenig <hannes.tschofenig@gmx.net> wrote: > > Hi all, > > in the CORE working group we are developing a document that allows CoAP > to be run over TCP (and TLS) to deal with firewalls and NATs. To ensure > that state that these middleboxes is kept alive various techniques are > available, including > * TCP keep-alive messages, > * TLS heartbeat messages (obviously work only with TLS), > * application layer heartbeats. > > On the CORE list I was told that (based on personal experience) TCP > keepalive messages are often filtered by routers in cellular operator > networks. > > I was wondering whether there are some data points about this somewhere. > I am sure someone of you can point me to the right direction. > > Ciao > Hannes >
- [Maprg] Fwd: Re: Filtering of TCP Keepalive Messa… Hannes Tschofenig