Cedric Brandily 1d776bc16c Allow to request metadata proxy only with redirection ... metadata service should be requested on 169.254.169.254:80 and router namespace iptables rules redirect the request to the metadata-ns-proxy on 127.0.0.1:$metadata_port. But currently the metadata-ns-proxy can be requested directly on $router-ip:$metadata_port. To avoid such behavior, this change marks packets redirection in mangle table (PREROUTING), redirects (PREROUTING) them in nat table, accepts them in filter table (INPUT) using the mark. Packets send to the metadata proxy port without mark (so directly) are dropped. The mark can be configured through the new option metadata_access_mark. Remark: redirected packets are not local packets (in general), so setting metadata proxy server host to 127.0.0.1 will disallow direct queries but so redirected queries. DocImpact Partial-Bug: #1187102 Change-Id: I6a9bb12c8bf68c6fcf4e4060f8dfe44a309a41da		2015-01-30 09:34:49 +00:00
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__init__.py	Revert "Revert "Add metadata proxy L3 agent driver""	2015-01-06 21:41:39 +00:00
test_driver.py	Allow to request metadata proxy only with redirection	2015-01-30 09:34:49 +00:00