RE: [IMail Forum] OT: what's a bogon?
HYPERLINK "http://en.wikipedia.org/wiki/Bogon_filtering"http://en.wikipedia.org/wiki/B ogon_filtering Vincent Toussaint From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of David E. Smith Sent: Thursday, December 04, 2008 2:55 PM To: Imail_Forum@list.ipswitch.com Subject: Re: [IMail Forum] OT: what's a bogon? Sanford Whiteman wrote: Basically, it means they think you're using IP address space that isn't yours. Without more details, I can't be sure. No, that's not it. See my e-mail. Aha. I mis-read some of the original form-letter. Sandy's right and I'm silly. David Smith MVN.net No virus found in this incoming message. Checked by AVG. Version: 7.5.552 / Virus Database: 270.9.13/1828 - Release Date: 12/4/2008 8:05 AM No virus found in this outgoing message. Checked by AVG. Version: 7.5.552 / Virus Database: 270.9.13/1828 - Release Date: 12/4/2008 8:05 AM
Re: [IMail Forum] OT: what's a bogon?
That makes sense! They could have used your one paragraph and skipped their lengthy email, plus all the web pages I looked up and just repeated themselves. I know that in our systems, we have no references to 173.x.x.x. However, we do have a managed router from our upstream ISP. So the blockage is likely there. Or else it's further upstream in the ISP. Either way, I just need to let them know that it's their problem. Thanks very much, Ben - Original Message - From: "Sanford Whiteman" <[EMAIL PROTECTED]> To: "Imail Admin" Sent: Thursday, December 04, 2008 12:00 PM Subject: Re: [IMail Forum] OT: what's a bogon? This is off-topic, but we got this message (see below) regarding a web site we host. I can't make heads or tails of it. I search the web and looked at the relevant explanations and they still don't make sense. It's one of those things where if you already understand it, what you're saying makes sense. But if you don't already understand it, you're not going to learn. Can anyone explain it to me? Mediacom has begun allocating IPs in 173.0.0.0/8 to its customers. At least one of your upstream routers has that source network blocked as known-bogus -- which it was until early this year, when IANA freed it up for use by Mediacom and other providers. Legitimate traffic can now originate from that network, but the routers in question are not getting dynamic updates to the bogon list. They are still stuck with a list that predates the Feb 2008 "legitimization" of that network. So they still block the traffic based on having an illegitimate source. The question is, as BC Web, do you maintain your own routing equipment all the way up the line to the Net at large -- or do you get your uplink from a datacenter or ISP, with a managed router? The answer will determine who has to fix the router(s). --Sandy Sanford Whiteman, Chief Technologist Broadleaf Systems, a division of Cypress Integrated Systems, Inc. e-mail: [EMAIL PROTECTED] SpamAssassin plugs into Declude! http://www.imprimia.com/products/software/freeutils/SPAMC32/download/release/ Defuse Dictionary Attacks: Turn Exchange or IMail mailboxes into IMail Aliases! http://www.imprimia.com/products/software/freeutils/exchange2aliases/download/release/ http://www.imprimia.com/products/software/freeutils/ldap2aliases/download/release/ To Unsubscribe: http://imailserver.com/support/discussion_list/ List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://imailserver.com/support/kb.html To Unsubscribe: http://imailserver.com/support/discussion_list/ List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://imailserver.com/support/kb.html
Re: [IMail Forum] OT: what's a bogon?
Sanford Whiteman wrote: Basically, it means they think you're using IP address space that isn't yours. Without more details, I can't be sure. No, that's not it. See my e-mail. Aha. I mis-read some of the original form-letter. Sandy's right and I'm silly. David Smith MVN.net
Re: [IMail Forum] OT: what's a bogon?
> This is off-topic, but we got this message (see below) regarding a > web site we host. I can't make heads or tails of it. I search the > web and looked at the relevant explanations and they still don't > make sense. It's one of those things where if you already understand > it, what you're saying makes sense. But if you don't already > understand it, you're not going to learn. Can anyone explain it to > me? Mediacom has begun allocating IPs in 173.0.0.0/8 to its customers. At least one of your upstream routers has that source network blocked as known-bogus -- which it was until early this year, when IANA freed it up for use by Mediacom and other providers. Legitimate traffic can now originate from that network, but the routers in question are not getting dynamic updates to the bogon list. They are still stuck with a list that predates the Feb 2008 "legitimization" of that network. So they still block the traffic based on having an illegitimate source. The question is, as BC Web, do you maintain your own routing equipment all the way up the line to the Net at large -- or do you get your uplink from a datacenter or ISP, with a managed router? The answer will determine who has to fix the router(s). --Sandy Sanford Whiteman, Chief Technologist Broadleaf Systems, a division of Cypress Integrated Systems, Inc. e-mail: [EMAIL PROTECTED] SpamAssassin plugs into Declude! http://www.imprimia.com/products/software/freeutils/SPAMC32/download/release/ Defuse Dictionary Attacks: Turn Exchange or IMail mailboxes into IMail Aliases! http://www.imprimia.com/products/software/freeutils/exchange2aliases/download/release/ http://www.imprimia.com/products/software/freeutils/ldap2aliases/download/release/ To Unsubscribe: http://imailserver.com/support/discussion_list/ List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://imailserver.com/support/kb.html
Re: [IMail Forum] OT: what's a bogon?
Imail Admin wrote: This is off-topic, but we got this message (see below) regarding a web site we host. I can't make heads or tails of it. I search the web and looked at the relevant explanations and they still don't make sense. It's one of those things where if you already understand it, what you're saying makes sense. But if you don't already understand it, you're not going to learn. Can anyone explain it to me? Basically, it means they think you're using IP address space that isn't yours. Without more details, I can't be sure. Feel free to send me a copy of the full emails and such off-list; I'd be glad to try to make sense of it for you. David Smith MVN.net To Unsubscribe: http://imailserver.com/support/discussion_list/ List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://imailserver.com/support/kb.html
