Hi, nobody a idea ? I really need it .. I tried the syntax mentioned at the manual page but I don't see decrypted esp packets at all .. Usuall, it sould work with : tcpdump -w dump.log -vv -E des:sharedsecret esp host <dsthost> But all I get is : tcpdump: 'esp' modifier applied to host -Alex bleonhardt@analytek.de schrieb am 29.07.2004 14:25:12:
Hi all,
I guess it's OT, again.. but I need it quite quickly...
... I need to capture and decrypt esp packets to see, what's in ... anybody an idea ?
I already have downloaded and installed the latest libcrypt ( openssl ),
the latestet tcpdump ( I had to change the "configure" file to get "des_cbc_encrypt" implemented ) and the latest libpcap ...
Now, I tried following :
tcpdump -i eth0 -w dump.cap -n -vv -E des-cbc:shared-secret ip proto 50 or ip proto 51 or udp port 500 or udp port 4500
I see all the ESP packets but I can't see, if it's just a ping, or anything else...
I also tried :
tcpdump -i eth0 -w dump-cap -n -vv -E des-cbc:shared-secret esp host IPADDRESSOFTHEREMOTE-SECURED-HOST
but didn't work at all...
any ideas ?
Many thanks, Alex
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