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authorMicah Anderson <micah@leap.se>2014-04-29 14:39:15 -0400
committerMicah Anderson <micah@leap.se>2014-04-29 14:39:15 -0400
commite3e44973d6290a0228375135adf88d3271fc4242 (patch)
tree3637bfdbee71545533d81f36a8d53888e9567289 /doc/under-the-hood.md
parent9574bf2b8a87d32f799c80bf37818d62be6b7c15 (diff)
block DNS traffic at the OpenVPN gateway (#4164)
There are many different edge cases where mac and windows clients (and maybe android too) will revert to using a different DNS server than the one specified by openvpn. This is bad news for security reasons. The client is being designed so it doesn't leak DNS, however we don't want to put all of our eggs in one basket, so this will block outgoing port 53 (udp and tcp) on the gateway's firewall from any of the EIP interfaces (thus not blocking DNS access on the gateway itself). Change-Id: I84dcfec7fb591cf7e6b356b66b9721feda188177
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