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IPv6 and Tunnels

IPv6 and Tunnels. IPv6 and Tunnels in the same presentation?. The work for both was done around the same time Most IPv6 traffic at the time was still tunneled (and likely still is at most sites). 2. IPv6. It ’ s turned on like you ’ d expect it to be and you can ’ t turn it off

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IPv6 and Tunnels

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  1. IPv6 and Tunnels

  2. IPv6 and Tunnels in the same presentation? • The work for both was done around the same time • Most IPv6 traffic at the time was still tunneled (and likely still is at most sites) 2

  3. IPv6 • It’s turned on like you’d expect it to be and you can’t turn it off • Not overly exciting • Different addresses in your logs • Lots of strange edge cases supported 3

  4. Tunnels • Everyone has tunnels • Even if you don’t know it • Most tunnels are for locally enabling IPv6 on end hosts 4

  5. Tunnel Decapsulators • Teredo • IP-in-IP (includes 6to4) • AYIYA • GTPv1 • SOCKS • Yes, SOCKS is a proxy protocol but internally we treat it similar to a tunnel 5

  6. Tunnel Recursion • Tunnels in tunnels 6

  7. Forensic Logs - tunnel.log 7

  8. Forensic Logs - conn.log 8

  9. Forensic Logs - conn.log 9

  10. Summary • Awareness of IPv6 and Tunnels in Bro • Normally don’t need to worry about them 10

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