You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
29 lines
1.2 KiB
29 lines
1.2 KiB
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 <jjciarla@raiz.uncu.edu.ar>
|
|
|