--- Quoting [EMAIL PROTECTED] on 2005/08/24 at 18:35 +0200:

> 1) From Client1, I cannot ping its default gateway (.3.254) anymore. No ping 
> replies. ssh connection is frozen.

What machine and interface is .3.254 on? From the information below it
does not look like it's on PC_B. PC_B is .3.70.
 
> 2) If I run a tcpdump -i rl1, I see that the pings from Client1 to PC_B are 
> *routed* to PC_A!! Of course, PC_A doesn't know what to do with them; 
> something is getting back, however (encrypted) :
> # tcpdump -i rl1
> 17:54:15.803747 esp 10.0.0.6 > 10.0.0.1 spi 0x1F3A4307 seq 70 len 132 (DF)
> 17:54:15.810208 esp 10.0.0.1 > 10.0.0.6 spi 0x8A4C7C72 seq 58 len 132 (DF)

Doubtful. You have no idea what packets are encapsulated here. Do your
sniffing on enc0 instead.
 
> 6) Not all of PC_B 's traffic is going through the tunnel; for example, DNS 
> queries are still in clear:

netstat -rnf encap is your friend. You are not building a phase-2
connection that includes 10.0.0.x so no encryption for you. Same
reasoning applies to your ping from 10.0.0.1 to .6.



.joel

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