DNS timeouts while running massdns

blacklanternsecurity / bbot

A recursive internet scanner for hackers.

https://www.blacklanternsecurity.com/bbot/

GNU General Public License v3.0

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DNS timeouts while running massdns #357

Closed TheTechromancer closed 1 year ago

TheTechromancer commented 1 year ago

If BBOT's main DNS resolver exists in the list of resolvers used by massdns, this can cause DNS timeouts (due to rate limiting) and lead to missed data due to unresolved hosts. (I have run into this exact issue with 8.8.8.8)

A possible solution might be to determine the furthest upstream DNS server (e.g. via whoami.akami.net) and ensure to exclude that from the massdns resolver list.

TheTechromancer commented 1 year ago

Haven't run into this for a while, will reopen if it appears.