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From "David Allsopp (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-3462) Determine IP address of Message sender from the socket, rather than trusting the sender
Date Tue, 08 Nov 2011 12:20:51 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-3462?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13146243#comment-13146243
] 

David Allsopp commented on CASSANDRA-3462:
------------------------------------------

Ah, yes :-).  Given that the parent issue has been closed there's probably no point pursuing
this.

Validating forwarded messages end-to-end is possible using a 'chain of trust' where each forwarding
node vouches for the originator, but it seems the inter-node encryption achieves the same
goal and more!
                
> Determine IP address of Message sender from the socket, rather than trusting the sender
> ---------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-3462
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3462
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: Core
>         Environment: All.
>            Reporter: David Allsopp
>            Assignee: David Allsopp
>              Labels: authentication, security
>             Fix For: 1.0.3
>
>         Attachments: Cassandra-3462-v2.patch, Cassandra-3462.patch
>
>
> A prerequisite for preventing malicious nodes from joining a cluster (parent issue https://issues.apache.org/jira/browse/CASSANDRA-2274)
is that we can determine the IP of the sender (setting aside the fact that this may be spoofed
by a determined attacker). 
> Currently we deserialize the "from" IP address from the incoming message header, using
Header.deserialize() and CompactEndpointSerializationHelper.deserialize() i.e. we trust the
sender to supply a true IP address.
> We could stop storing the IP address in the message Header at all (saving a small amount
of space) and set the 'true' sender IP upon receipt of the message, in org.apache.cassandra.net.IncomingTcpConnection,
using socket.getInetAddress().

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