[Swan] What is the meaning of "leftprotoport=17/0" ?

Paul Wouters paul at nohats.ca
Sun Nov 1 21:33:38 UTC 2015

The protoport= is a selector that narrows down the IP ranges specified in left/right (or leftsubnet/rightsubnet). 

The example you quote had type=passthrough so it defines what will not be used for IPSec. The default is type=tunnel which means what to include for IPSec.

Sent from my iPhone

> On Nov 1, 2015, at 12:53, ChenHao <earthlovepython at outlook.com> wrote:
> Hi All:
> Based on example of /etc/ipsec.d/v6neighbor-hole.conf , the traffic of "ICMPv6 Neighbor Solicitation" or "ICMPv6 Neighbor Solicitation" in encrypted.  Right ? 
> So I think "leftprotoport=17/0" means all UDP traffic is NOT protected by IPSec. Right? 
> Thanks and regards
> Hao Chen
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> Swan at lists.libreswan.org
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