AI BriefingApplying First AS Verification in BGP AS_PATH
·2026.06.04 02:00
Key point
A mechanism to verify the first AS in the AS_PATH is needed to prevent BGP routing hijacks and path leaks.
Details
BGP is vulnerable to routing hijacks and path leaks, which can negatively impact internet traffic.
RPKI helps address part of this problem, but it has limitations in defending against forged paths. To complement this, a simpler mechanism called 'First AS enforcement,' which verifies the first AS in the AS_PATH, should be utilized.
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