IP dynamic address hack-port v0.03
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This stuff allows diald ONESHOT connections to get established by
dynamically changing packet source address (and socket's if local procs).
It is implemented for TCP diald-box connections(1) and IP_MASQuerading(2).

If enabled[*] and forwarding interface has changed:
 1)  Socket (and packet) source address is rewritten ON RETRANSMISSIONS
     while in SYN_SENT state (diald-box processes).
 2)  Out-bounded MASQueraded source address changes ON OUTPUT (when
     internal host does retransmission) until a packet from outside is
     received by the tunnel.

This is specially helpful for auto dialup links (diald), where the
``actual'' outgoing address is unknown at the moment the link is
going up. So, the *same* (local AND masqueraded) connections requests that
bring the link up will be able to get established.

[*] At boot, by default no address rewriting is attempted.
 To enable:
    # echo 1 > /proc/sys/net/ipv4/ip_dynaddr
 To enable verbose mode:
    # echo 2 > /proc/sys/net/ipv4/ip_dynaddr
 To disable (default)
    # echo 0 > /proc/sys/net/ipv4/ip_dynaddr

Enjoy!

-- Juanjo  <[email protected]>

You are viewing proxied material from ftp.icm.edu.pl. The copyright of proxied material belongs to its original authors. Any comments or complaints in relation to proxied material should be directed to the original authors of the content concerned. Please see the disclaimer for more details.