Re: [midcom] [I2nsf] Comparing MIDCOM, PCP with I2NSF
🔓Dan Wing <dwing@cisco.com> Mon, 09 February 2015 23:46 UTC
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From: 🔓Dan Wing <dwing@cisco.com>
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Date: Mon, 09 Feb 2015 15:46:07 -0800
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To: Linda Dunbar <linda.dunbar@huawei.com>
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Cc: "i2nsf@ietf.org" <i2nsf@ietf.org>, "midcom@ietf.org" <midcom@ietf.org>, Melinda Shore <melinda.shore@gmail.com>, "pcp@ietf.org" <pcp@ietf.org>
Subject: Re: [midcom] [I2nsf] Comparing MIDCOM, PCP with I2NSF
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PCP deals with an incoming connection (with its MAP opcode) and with timeouts of a connection (with its PEER opcode). As they are, those don't seem to help much a subscriber choosing some network services function for their traffic. MAP does have a FILTER option, which provides some filtering (ACL) capabilities, but I expect i2nsf is looking at more advanced functionality than that? -d On 09-Feb-2015 11:38 AM, Linda Dunbar <linda.dunbar@huawei.com> wrote: > Melinda, > > (CC’ed PCP group and MIDCOM group for wider review. ) > > After studying RFCs/Charter of MIDCOM and PCP, it seems to me that PCP is a lot more closely tied with MIDCOM than I2NSF. > “ The PCP working group is chartered to standardize a client/server Port > Control Protocol (PCP) to enable an explicit dialog with a middlebox > such as a NAT or a firewall to open up and/or forward TCP or UDP port, > regardless of the location of that middlebox” > > > MIDCOM “focuses its attention on communication with firewalls and network address translators (including translation between IPv6 and IPv4).” > > I noticed that the detailed protocols developed by MIDCOM is quite different from PCP. For example, the MDCOM protocol is tied closely with the SIP agent (SIP/RTSP Proxy) to send “INVITE”, respond to “180Ringing” or “Port-BIND” reply to Middle Boxes. The MIDCOM protocol is very much SIP protocol oriented, whereas the PCP is more FW/NAT device oriented. > > > I2NSF will focus on management of many instances of security functions (virtual security functions), i.e. the use case described by http://datatracker.ietf.org/doc/draft-pastor-i2nsf-access-usecases/ <http://datatracker.ietf.org/doc/draft-pastor-i2nsf-access-usecases/>: > > Among the 3 actions listed in the Use Case draft, I can see that #2 below can utilize some of the mechanisms developed by PCP and MIDCOM. > > > 1. Customer enrollment and cancellation of the subscription to a > vNSF. ( > > 2. Configuration of the vNSF, based on specific configurations or > derived from common security policies defined by the operator. > > 3. Retrieve and list of the vNSF functionalities, extracted from a > manifest or a descriptor. The network operator management systems > can demand this information to offer detailed information through > the commercial channels to the customer. > > > What messages & protocols by MIDCOM & PCP do you see that can be used for I2NSF purpose? > > > Linda > > _______________________________________________ > I2nsf mailing list > I2nsf@ietf.org > https://www.ietf.org/mailman/listinfo/i2nsf
- Re: [midcom] [I2nsf] Comparing MIDCOM, PCP with I… 🔓Dan Wing