Re: [strongSwan] Strongswan responds to scan attack

2018-12-06 Thread Tobias Brunner
Hi Naveen,

> The vulnerability is : ISAKMP endpoint allows short key lengths or
> insecure encryption algorithms to be negotiated. This could allow remote
> attackers to compromise the confidentiality and integrity of the data by
> decrypting and modifying individual ESP and AH packets. 

I don't understand what exactly you are referring to.  How is the above
related to responding to unsolicited IKE requests?

Regards,
Tobias



Re: [strongSwan] Strongswan responds to scan attack

2018-12-05 Thread Naveen Neelakanta
Thanks Tobias

The vulnerability is : ISAKMP endpoint allows short key lengths or insecure
encryption algorithms to be negotiated. This could allow remote attackers
to compromise the confidentiality and integrity of the data by decrypting
and modifying individual ESP and AH packets.

Thanks,
Naveen


On Wed, Dec 5, 2018 at 3:03 AM Tobias Brunner  wrote:

> Hi Naveen,
>
> > Is there a configuration to avoid strongswan from responding
> > to unsolicited request from scans, even when strongswan is not
> > configured with an endpoint configuration,
>
> What kind of request is sent, what kind response?  And what exactly
> makes a request unsolicited?
>
> Anyway, there is the charon.initiator_only option to ignore any initial
> IKE messages.
>
> Regards,
> Tobias
>


Re: [strongSwan] Strongswan responds to scan attack

2018-12-05 Thread Tobias Brunner
Hi Naveen,

> Is there a configuration to avoid strongswan from responding
> to unsolicited request from scans, even when strongswan is not
> configured with an endpoint configuration, 

What kind of request is sent, what kind response?  And what exactly
makes a request unsolicited?

Anyway, there is the charon.initiator_only option to ignore any initial
IKE messages.

Regards,
Tobias


[strongSwan] Strongswan responds to scan attack

2018-12-04 Thread Naveen Neelakanta
Hi

Is there a configuration to avoid strongswan from responding to
unsolicited request
from scans, even when strongswan is not configured with an
endpoint configuration,

This was detected with PCI auditing tools

Thanks,
Naveen