Re: [mpls] Kathleen Moriarty's Discuss on draft-ietf-mpls-lsp-ping-reply-mode-simple-04: (with DISCUSS)
Mach Chen <mach.chen@huawei.com> Sat, 10 October 2015 02:40 UTC
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From: Mach Chen <mach.chen@huawei.com>
To: Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com>
Thread-Topic: Kathleen Moriarty's Discuss on draft-ietf-mpls-lsp-ping-reply-mode-simple-04: (with DISCUSS)
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Date: Sat, 10 Oct 2015 02:40:04 +0000
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Cc: "mpls@ietf.org" <mpls@ietf.org>, "draft-ietf-mpls-lsp-ping-reply-mode-simple.shepherd@ietf.org" <draft-ietf-mpls-lsp-ping-reply-mode-simple.shepherd@ietf.org>, "draft-ietf-mpls-lsp-ping-reply-mode-simple@ietf.org" <draft-ietf-mpls-lsp-ping-reply-mode-simple@ietf.org>, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, "draft-ietf-mpls-lsp-ping-reply-mode-simple.ad@ietf.org" <draft-ietf-mpls-lsp-ping-reply-mode-simple.ad@ietf.org>, The IESG <iesg@ietf.org>, "rcallon@juniper.net" <rcallon@juniper.net>
Subject: Re: [mpls] Kathleen Moriarty's Discuss on draft-ietf-mpls-lsp-ping-reply-mode-simple-04: (with DISCUSS)
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Hi Kathleen, Alvaro, Stephen and others, Many thanks for your valuable comments and suggestions! We have uploaded the verion-05 that addresses all the comments received so far, please take a look at it. Best regards, Mach PS: https://tools.ietf.org/html/draft-ietf-mpls-lsp-ping-reply-mode-simple-05 > -----Original Message----- > From: Kathleen Moriarty [mailto:kathleen.moriarty.ietf@gmail.com] > Sent: Friday, October 09, 2015 2:11 AM > To: Mach Chen > Cc: The IESG; draft-ietf-mpls-lsp-ping-reply-mode-simple.shepherd@ietf.org; > mpls-chairs@ietf.org; draft-ietf-mpls-lsp-ping-reply-mode-simple@ietf.org; > draft-ietf-mpls-lsp-ping-reply-mode-simple.ad@ietf.org; rcallon@juniper.net; > mpls@ietf.org > Subject: Re: Kathleen Moriarty's Discuss on > draft-ietf-mpls-lsp-ping-reply-mode-simple-04: (with DISCUSS) > > On Wed, Oct 7, 2015 at 10:34 PM, Mach Chen <mach.chen@huawei.com> > wrote: > > Hi Kathleen, > > > > Sorry for the delayed response, just returned from the National Day Holidays! > > > > We will upload the updated document that addresses all received DISSCUS > and comments so far. > > Thank you, I'll look for the update to come through. I hope you enjoyed your > holidays! > Kathleen > > > > > > Thanks, > > Mach > > > >> -----Original Message----- > >> From: Kathleen Moriarty [mailto:kathleen.moriarty.ietf@gmail.com] > >> Sent: Thursday, October 01, 2015 12:12 AM > >> To: Mach Chen > >> Cc: The IESG; > >> draft-ietf-mpls-lsp-ping-reply-mode-simple.shepherd@ietf.org; > >> mpls-chairs@ietf.org; > >> draft-ietf-mpls-lsp-ping-reply-mode-simple@ietf.org; > >> draft-ietf-mpls-lsp-ping-reply-mode-simple.ad@ietf.org; > >> rcallon@juniper.net; mpls@ietf.org > >> Subject: Re: Kathleen Moriarty's Discuss on > >> draft-ietf-mpls-lsp-ping-reply-mode-simple-04: (with DISCUSS) > >> > >> On Tue, Sep 29, 2015 at 11:13 PM, Mach Chen <mach.chen@huawei.com> > >> wrote: > >> > Hi Kathleen, > >> > > >> > Thanks for your prompt response! > >> > > >> > Please see my reply inline... > >> > > >> >> -----Original Message----- > >> >> From: Kathleen Moriarty [mailto:kathleen.moriarty.ietf@gmail.com] > >> >> Sent: Wednesday, September 30, 2015 10:39 AM > >> >> To: Mach Chen > >> >> Cc: The IESG; > >> >> draft-ietf-mpls-lsp-ping-reply-mode-simple.shepherd@ietf.org; > >> >> mpls-chairs@ietf.org; > >> >> draft-ietf-mpls-lsp-ping-reply-mode-simple@ietf.org; > >> >> draft-ietf-mpls-lsp-ping-reply-mode-simple.ad@ietf.org; > >> >> rcallon@juniper.net; mpls@ietf.org > >> >> Subject: Re: Kathleen Moriarty's Discuss on > >> >> draft-ietf-mpls-lsp-ping-reply-mode-simple-04: (with DISCUSS) > >> >> > >> >> Hi, > >> >> > >> >> Thanks for suggesting text quickly to address this. Inline > >> >> > >> >> Sent from my iPhone > >> >> > >> >> > On Sep 29, 2015, at 10:28 PM, Mach Chen <mach.chen@huawei.com> > >> >> wrote: > >> >> > > >> >> > Hi Kathleen, > >> >> > > >> >> > Thanks for reviewing the draft and the suggestion! > >> >> > > >> >> > Regarding the DISCUSS, how about the following update? > >> >> > > >> >> > OLD: > >> >> > Beyond those specified in [RFC4379] and [RFC7110], there are no > >> >> > further > >> >> security measures required. > >> >> > > >> >> > NEW: > >> >> > Those security considerations specified in [RFC4379] and > >> >> > [RFC7110] apply for > >> >> this document. > >> >> > In addition, this document introduces the Reply Mode Order TLV. > >> >> > It provides a > >> >> new way for an unauthorized source to gather more network > >> >> information, especially the potential return path(s) information > >> >> of an LSP. To protect against unauthorized sources using MPLS echo > >> >> request messages with the Reply Mode Order TLV to obtain network > >> >> information, similar to [RFC4379], it is RECOMMENDED that > >> >> implementations provide a means of checking the source addresses > >> >> of MPLS echo request messages against an access list before > >> >> accepting the > >> message. > >> >> > >> >> If the message is not encrypted, this content is still exposed > >> >> potentially, > >> right? > >> > > >> > Yes, but it is exposed within the MPLS domain. > >> > > >> >> This helps, but also mentioning lack of confidentiality protection > >> >> might be helpful too. > >> > > >> > I'm not sure whether this issue is specific to this document, seems > >> > this is a > >> common issue for MPLS OAM and control plane. > >> > > >> > If this is a concern, how about adding the following text: > >> > " > >> > Another potential security issue is that the MPLS echo request and > >> > reply messages are not encrypted, the content of the MPLS echo > >> > request and reply messages may be potentially exposed. Although the > >> > exposure is within the MPLS domain, if such exposure is a concern, > >> > some encryption mechanisms may be employed. > >> > " > >> > >> This additional text puts int he caveat that you are concerned with > >> and limits the scope to the MPLS domain, so I think that is helpful > >> on both fronts. The two combined would cover any additional > >> considerations for this draft nicely, thank you. > >> > >> Please let me know when the updated text has been incorporated and I > >> will clear. > >> > >> Thanks, > >> Kathleen > >> > > >> > Best regards, > >> > Mach > >> > > >> >> > >> >> Thank you, > >> >> Kathleen > >> >> > >> >> > > >> >> > > >> >> > Best regards, > >> >> > Mach > >> >> > > >> >> > > >> >> >> -----Original Message----- > >> >> >> From: Kathleen Moriarty > >> >> >> [mailto:Kathleen.Moriarty.ietf@gmail.com] > >> >> >> Sent: Tuesday, September 29, 2015 11:15 PM > >> >> >> To: The IESG > >> >> >> Cc: > >> >> >> draft-ietf-mpls-lsp-ping-reply-mode-simple.shepherd@ietf.org; > >> >> >> mpls-chairs@ietf.org; > >> >> >> draft-ietf-mpls-lsp-ping-reply-mode-simple@ietf.org; > >> >> >> draft-ietf-mpls-lsp-ping-reply-mode-simple.ad@ietf.org; > >> >> >> rcallon@juniper.net; mpls@ietf.org > >> >> >> Subject: Kathleen Moriarty's Discuss on > >> >> >> draft-ietf-mpls-lsp-ping-reply-mode-simple-04: (with DISCUSS) > >> >> >> > >> >> >> Kathleen Moriarty has entered the following ballot position for > >> >> >> draft-ietf-mpls-lsp-ping-reply-mode-simple-04: Discuss > >> >> >> > >> >> >> When responding, please keep the subject line intact and reply > >> >> >> to all email addresses included in the To and CC lines. (Feel > >> >> >> free to cut this introductory paragraph, however.) > >> >> >> > >> >> >> > >> >> >> Please refer to > >> >> >> https://www.ietf.org/iesg/statement/discuss-criteria.html > >> >> >> for more information about IESG DISCUSS and COMMENT positions. > >> >> >> > >> >> >> > >> >> >> The document, along with other ballot positions, can be found here: > >> >> >> https://datatracker.ietf.org/doc/draft-ietf-mpls-lsp-ping-reply > >> >> >> -mo > >> >> >> de- > >> >> >> simple/ > >> >> >> > >> >> >> > >> >> >> > >> >> >> --------------------------------------------------------------- > >> >> >> --- > >> >> >> --- > >> >> >> - > >> >> >> DISCUSS: > >> >> >> --------------------------------------------------------------- > >> >> >> --- > >> >> >> --- > >> >> >> - > >> >> >> > >> >> >> This should be easy to resolve. SInce this draft adds a new > >> >> >> capability to include the return path, this provides another > >> >> >> attack vector to observe path information that could be part of > >> >> >> reconnaissance gathering to later attack the network or path. > >> >> >> While the referenced RFC4379 mentions the following in the > >> >> >> security > >> >> considerations section: > >> >> >> > >> >> >> The third is an > >> >> >> unauthorized source using an LSP ping to obtain information about > the > >> >> >> network. > >> >> >> > >> >> >> The equivalent should be added for this new capability in this > >> >> >> draft, since now it's possible to gather the path information > >> >> >> from the new > >> feature. > >> >> > > >> > >> > >> > >> -- > >> > >> Best regards, > >> Kathleen > > > > -- > > Best regards, > Kathleen
- [mpls] Kathleen Moriarty's Discuss on draft-ietf-… Kathleen Moriarty
- Re: [mpls] Kathleen Moriarty's Discuss on draft-i… Mach Chen
- Re: [mpls] Kathleen Moriarty's Discuss on draft-i… Kathleen Moriarty
- Re: [mpls] Kathleen Moriarty's Discuss on draft-i… Mach Chen
- Re: [mpls] Kathleen Moriarty's Discuss on draft-i… Kathleen Moriarty
- Re: [mpls] Kathleen Moriarty's Discuss on draft-i… Mach Chen
- Re: [mpls] Kathleen Moriarty's Discuss on draft-i… Kathleen Moriarty
- Re: [mpls] Kathleen Moriarty's Discuss on draft-i… Mach Chen