From b0e92634d85a3bf7612a6ce0339b96e4aad1e0bb Mon Sep 17 00:00:00 2001 From: Mike Perry Date: Tue, 6 Sep 2016 11:35:53 -0700 Subject: Netflow record collapsing defense. This defense will cause Cisco, Juniper, Fortinet, and other routers operating in the default configuration to collapse netflow records that would normally be split due to the 15 second flow idle timeout. Collapsing these records should greatly reduce the utility of default netflow data for correlation attacks, since all client-side records should become 30 minute chunks of total bytes sent/received, rather than creating multiple separate records for every webpage load/ssh command interaction/XMPP chat/whatever else happens to be inactive for more than 15 seconds. The defense adds consensus parameters to govern the range of timeout values for sending padding packets, as well as for keeping connections open. The defense only sends padding when connections are otherwise inactive, and it does not pad connections used solely for directory traffic at all. By default it also doesn't pad inter-relay connections. Statistics on the total padding in the last 24 hours are exported to the extra-info descriptors. --- src/test/test.h | 1 + 1 file changed, 1 insertion(+) (limited to 'src/test/test.h') diff --git a/src/test/test.h b/src/test/test.h index 2bd58f51c8..1f12a9d6c2 100644 --- a/src/test/test.h +++ b/src/test/test.h @@ -181,6 +181,7 @@ extern struct testcase_t buffer_tests[]; extern struct testcase_t cell_format_tests[]; extern struct testcase_t cell_queue_tests[]; extern struct testcase_t channel_tests[]; +extern struct testcase_t channelpadding_tests[]; extern struct testcase_t channeltls_tests[]; extern struct testcase_t checkdir_tests[]; extern struct testcase_t circuitlist_tests[]; -- cgit v1.2.3-54-g00ecf