Just wondering how far everyone is going on filtering BGP sessions when peering with other content providers and carriers over an internet exchange. What are you doing. 1. Just filtering out IPv4 Reserved Space, RFC 1918, and Default Routes. 2. AS Path Filtering. Only filtering by the AS's that are present in the IRR Record. 3. Filtering by IP Prefix based on the IRR Record for the Peer. (Yes some Prefix Filter list can be a couple thousand lines) 4. Doing both #3 and 4 listed above. Besides Peering DB is there any software to help keep track of IX and Peering info. So far I have only found IXP-MANGER ________________________________ CONFIDENTIALITY NOTICE: This e-mail transmission, and any documents, files or previous e-mail messages attached to it may contain confidential information that is legally privileged. If you are not the intended recipient, or a person responsible for delivering it to the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of any of the information contained in or attached to this transmission is STRICTLY PROHIBITED. If you have received this transmission in error please notify the sender immediately by replying to this e-mail. You must destroy the original transmission and its attachments without reading or saving in any manner. Thank you.