<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Dear colleagues,<div class=""><br class=""></div><div class="">I’m sure some of you have read about this recent incident; <a href="https://bgpstream.com/event/144058" class="">https://bgpstream.com/event/144058</a> . Nowadays we’re talking about transport security, https-per-default, etc. but the most fundamental parts of the internet such as BGP, are basically broken from a security perspective. While RPKI/ROA/ROV could fix most of the current security-related struggles, their deployment currently competes somewhat with IPv6 - or even worse - and therefore won’t be a practical solution in the forseeable future. Strict IRRDB and route object filtering is complicated (or almost impossible) as well.</div><div class=""><br class=""></div><div class="">So I’m wondering, why can't we just have an automated blacklist like RBL's for mailservers, where all AS'es detected for hijacking prefixes are automatically blacklisted, similiar to Team Cymru's fullbogons feed? The list combined with some scripting could then be used for realtime AS-path filtering at border routers. Delisting of blacklisted ASNs should happen only after a pre-defined amount of time (eg. 14 days) or after paying a fee to a charity/non-profit and providing a statement on the issue which is publicy released. The idea is to hurt those who can’t get their stuff - especially prefix filtering - together.</div><div class=""><br class=""></div><div class="">I still remember the days where everyone complained about RBLs, nowadays almost every mailserver setup relies on them. Sometimes extreme problems require extrem solutions.</div><div class=""><br class=""></div><div class=""><div class=""><p style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;" class="">Mit besten Grüßen<br class="">Kind Regards</p><p style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; text-decoration: none;" class="">Dominic Schallert, BA</p><span style="caret-color: rgb(0, 0, 0); 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