BGP Session Teardown due to AS_CONFED_SEQUENCE in AS4_PATH

2009-01-16 Thread Rob Shakir
Strict RFC 4893 (4-byte ASN support) BGP4 implementations are vulnerable to a session reset by distant (not directly connected) ASes. This vulnerability is a feature of the standard, and unless immediate action is taken an increasingly significant number of networks will be open to attack. Accident

Re: Radius & Tacacs+ Clients

2009-01-16 Thread Diogo Montagner
Also there is the JRadius: http://coova.org/wiki/index.php/JRadius Very easy to run it and also it is developed in Java. But I never tested its scalability in large environments. regards, ./diogo -montagner On Thu, Jan 15, 2009 at 6:43 PM, Hugh Irvine wrote: > > Hello John - > > Radiator inc

Re: smtp.comcast.net self-signed certs

2009-01-16 Thread Florian Weimer
* Jeff Mitchell: > I've been seeing some odd behavior today with some of the servers that > respond to smtp.comcast.net on port 587. Some, but not all, of the > servers are presenting self-signed certs, causing my own server to > balk at making a connection. (The Organization is RTFM, Inc. -- it'd

Re: smtp.comcast.net self-signed certs

2009-01-16 Thread Adrian Chadd
On Fri, Jan 16, 2009, Florian Weimer wrote: > There's no PKI for Internet Mail routing, so I don't see what you get > by checking certificates at all. Function, non-broken Outlook integration. Adrian (Who is -fed up- with outlook just randomly spewing crap at you from time to time if you use

Re: smtp.comcast.net self-signed certs

2009-01-16 Thread Florian Weimer
* Adrian Chadd: > On Fri, Jan 16, 2009, Florian Weimer wrote: > >> There's no PKI for Internet Mail routing, so I don't see what you get >> by checking certificates at all. > > Function, non-broken Outlook integration. Oops, silly me. I assumed that this was about SMTP, it's about message submis

Re: BGP Session Teardown due to AS_CONFED_SEQUENCE in AS4_PATH

2009-01-16 Thread Tico
Comments below. Rob Shakir wrote: Strict RFC 4893 (4-byte ASN support) BGP4 implementations are vulnerable to a session reset by distant (not directly connected) ASes. This vulnerability is a feature of the standard, and unless immediate action is taken an increasingly significant number of netw

Re: smtp.comcast.net self-signed certs

2009-01-16 Thread Tony Finch
On Fri, 16 Jan 2009, Florian Weimer wrote: > > There's no PKI for Internet Mail routing, so I don't see what you get > by checking certificates at all. That's not entirely true. SMTP over TLS is intended to work for inter-domain SMTP, and it is in fact quite frequently used. However it is utterly

Re: smtp.comcast.net self-signed certs

2009-01-16 Thread Jeff Mitchell
Tony Finch wrote: That's not entirely true. SMTP over TLS is intended to work for inter-domain SMTP, and it is in fact quite frequently used. My understanding is that Comcast uses it simply for encryption, not for authentication. * Most SMTP software does not check certificates and many certifi

Re: smtp.comcast.net self-signed certs

2009-01-16 Thread Tony Finch
On Fri, 16 Jan 2009, Jeff Mitchell wrote: > You're right; certificate verification was turned on on my end simply because > I'd never had a reason to turn it off (since in recent times the majority of > my mail goes through their gateway, which has never presented an invalid > certificate to me be

Re: smtp.comcast.net self-signed certs

2009-01-16 Thread Eric Tow
I submitted a ticket to Comcast yesterday around 10:00 AM EST regarding this issue (ticket #151689315), received a standard reply last night, but as of yesterday 14:45 EST, the issue seems to have resolved itself. Here's the certificate I saw: Issued To Common Name (CN) - localhost Organization

Re: smtp.comcast.net self-signed certs

2009-01-16 Thread Jeff Mitchell
Eric Tow wrote: I submitted a ticket to Comcast yesterday around 10:00 AM EST regarding this issue (ticket #151689315), received a standard reply last night, but as of yesterday 14:45 EST, the issue seems to have resolved itself. I can verify that it was still happening as of about 12:10 AM EST t

Re: smtp.comcast.net self-signed certs

2009-01-16 Thread Owen DeLong
On Jan 16, 2009, at 8:54 AM, Tony Finch wrote: On Fri, 16 Jan 2009, Jeff Mitchell wrote: You're right; certificate verification was turned on on my end simply because I'd never had a reason to turn it off (since in recent times the majority of my mail goes through their gateway, which has

Weekly Routing Table Report

2009-01-16 Thread Routing Analysis Role Account
This is an automated weekly mailing describing the state of the Internet Routing Table as seen from APNIC's router in Japan. Daily listings are sent to bgp-st...@lists.apnic.net For historical data, please see http://thyme.apnic.net. If you have any comments please contact Philip Smith . Routing

Re: multicast meltdown?

2009-01-16 Thread Justin M. Streiner
On Thu, 15 Jan 2009, Antonio Querubin wrote: We've detected a large drop in the IPv4 multicast prefix count over the past few days. Anybody know what's going on? At this point I haven't seen any problems, nor have customers reported any to me. I did see my multicast prefix count drop from a

"Smart" hands around Dulles airport / northern VA.

2009-01-16 Thread Warren Kumari
Hi all, This is a mail that I have been meaning to send ever since I moved back to the NoVA area, but have only gotten around to now... Many years ago I used to provide emergency, smart hands type assistance to those in need, but had to give this up when I moved out of the area. Anyway, I

Circuit numbering scheme - best practice?

2009-01-16 Thread Jay Hennigan
We've grown to the point that "The MCI T-1 in Ontario" or "Bob's ethernet to port 6/23 on switch 7" aren't scaling. Also in working with carriers we are frequently asked to provide our internal circuit number. I've seen a lot of the the LEC scheme NN--NN where has some significan

Re: Circuit numbering scheme - best practice?

2009-01-16 Thread Alex H. Ryu
I think it is really depending on what kind of provisioning system you have. Circuit ID is determined by your provisioning system for CLR/DLR reference. As long as you can find circuit info quickly, it doesn't matter that much. Alex Jay Hennigan wrote: > We've grown to the point that "The MCI T-

Re: Circuit numbering scheme - best practice?

2009-01-16 Thread Justin M. Streiner
On Fri, 16 Jan 2009, Jay Hennigan wrote: Any suggestions from those who have been down this road as to a schema that makes sense and is scalable? Are there documented best practices? Many of the RBOCs (if they can be called that anymore) use the Common Language Circuit Identifier (CLCI) nome

BGPSEC & soBGP

2009-01-16 Thread Naveen Nathan
I came across this article on /.: http://www.networkworld.com/news/2009/011509-bgp.html?page=1 I'm not too familiar with security of routing protocols, but it became immediately evident as I read this article that much of the work has been accomplished with soBGP. I'm wondering why there is a new

Re: Circuit numbering scheme - best practice?

2009-01-16 Thread Scott Weeks
- j...@west.net wrote: -- thing and horrendously long circuit numbers including CLLI codes such as 101/T3/SNLOCAGTH07/SNLOCA01K15. --- That is what's used by the transport section (I'm in the IP section) in the company where I work. Even though the descrip

Re: Circuit numbering scheme - best practice?

2009-01-16 Thread Peter Wohlers
Jay Hennigan wrote: We've grown to the point that "The MCI T-1 in Ontario" or "Bob's ethernet to port 6/23 on switch 7" aren't scaling. Also in working with carriers we are frequently asked to provide our internal circuit number. I've seen a lot of the the LEC scheme NN--NN where XXX

Re: BGPSEC & soBGP

2009-01-16 Thread Steven M. Bellovin
On Sat, 17 Jan 2009 00:14:17 + Naveen Nathan wrote: > I came across this article on /.: > http://www.networkworld.com/news/2009/011509-bgp.html?page=1 > > I'm not too familiar with security of routing protocols, but it became > immediately evident as I read this article that much of the work

Re: "Smart" hands around Dulles airport / northern VA.

2009-01-16 Thread Randy Bush
warren, way cool and deeply generous of you. i wish i was clueful enough about where colos are and how things work in otemachi to offer to help folk who have kit here. fwiw, the seattle/westin community is very helpful in this way, with the seattle internet exchange lists a good place to beg

Re: "Smart" hands around Dulles airport / northern VA.

2009-01-16 Thread Brandon Galbraith
On 1/16/09, Warren Kumari wrote: > > Hi all, > > This is a mail that I have been meaning to send ever since I moved back to > the NoVA area, but have only gotten around to now... > > Many years ago I used to provide emergency, smart hands type assistance to > those in need, but had to give this up