Hello,
Pardon me for posting on both netfilter and netfilter_devel, because i
am unsure of which list would be more appropriate for my question.
I am writing an application using libnetfilter_queue that should perform
the following function
- Receives packets from NFQUEUE
- Apply a decryption algorithm to packets
- Issue an ACCEPT verdict for decrypted packets
These packets are destined to another box behind the firewall running
the above mentioned application.
Based on Fig 14-1 from the link below
http://www.linuxhomenetworking.com/wiki/index.php/Quick_HOWTO_:_Ch14_:_Linux_Firewalls_Using_iptablesI
I intend on siphoning out network packets at the PREROUTING chain of the
Mangle table by using
iptables -t mangle -A PREROUTING -i eth0 -p 1234 -j NFQUEUE
1) I would like to know if the PREROUTING chain in the mangle table is
an appropriate place to pick off the encrypted packets ?
2) Once the ACCEPT verdict is issued will the modified packets resume
processing along the PREROUTING chain of the mangle table ?
3) Is there a well documented reference for API's that i will need to
use while developing this application ?
Thanks in advance,
Regards,
Vikram.
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