Secure usage of netfilter hooks

Abhishek Singh (abhi@cc.gatech.edu)
Thu, 30 Jan 2003 12:33:04 -0500 (EST)

Hi,
Is it possible for a netfilter hook registered during module insertion
time to be removed by a userspace application (such as iptables) without
the insertion of a new module?

What I am trying to do is implement a hook for secure packet processing
using netfilter. If however an attacker can remove this hook without
inserting a new module or compromising the kernel in some way then the
security level of this hook is compromised. 

-- 


Thanks and Regards,


  -abhi




-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/