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Re: [tor-bugs] #19792 [Core Tor/TorDNSEL]: Exiting through undocumented nodes (IPs not listed)

#19792: Exiting through undocumented nodes (IPs not listed)
-------------------------------+-------------------------------
 Reporter:  cypherpunks        |          Owner:
     Type:  defect             |         Status:  closed
 Priority:  Medium             |      Milestone:
Component:  Core Tor/TorDNSEL  |        Version:  Tor: 0.2.5.12
 Severity:  Normal             |     Resolution:  not a bug
 Keywords:                     |  Actual Points:
Parent ID:                     |         Points:
 Reviewer:                     |        Sponsor:
-------------------------------+-------------------------------
Changes (by teor):

 * status:  new => closed
 * resolution:   => not a bug
 * component:  Core Tor/Tor => Core Tor/TorDNSEL


Comment:

 It is a supported configuration for an Exit to use a different IP address
 for its ORPort/DirPort and exit traffic.

 This is likely due to an Exit using the OutboundBindAddress option, or
 doing the moral equivalent using iptables, NAT, or a VPN.

 From the tor manual page:

        OutboundBindAddress IP
            Make all outbound connections originate from the IP address
            specified. This is only useful when you have multiple network
            interfaces, and you want all of Tor's outgoing connections to
 use a
            single one. This option may be used twice, once with an IPv4
            address and once with an IPv6 address. This setting will be
 ignored
            for connections to the loopback addresses (127.0.0.0/8 and
 ::1).

 Therefore, the source IP of exit traffic is not something we tend to worry
 about. (And if the exit has enough consensus weight, we will pick it up
 eventually in the exit list.)

 https://exonerator.torproject.org/

 But if you have evidence that the content of Exit traffic is being
 modified or inspected, please write to bad-relays@xxxxxxxxxxxxxxxxxxxx

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19792#comment:1>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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