[IPsec] Handling Redirect Loops

2009-07-30 Thread Tero Kivinen
Vijay Devarapalli writes: > 7. Handling Redirect Loops > >The client could end up getting redirected multiple times in a >sequence, either because of wrong configuration or a DoS attack. The >client could even end up in a loop with two or more gateways >redirecting the client to

[IPsec] Question regarding security considerations with NAT-T scenario in IKEv2

2009-07-30 Thread Tero Kivinen
Raj Singh writes: > 1. Initiator is behind N(P)AT and float the port to (4500, 4500) > > and send IKE_AUTH with source port 4500 now N(P)AT changes source port > as 1024 but there is a man-in-the-middle who changes the port to other > host behind N(P)AT's port say 1025, still IKE_AUTH packet is a

Re: [IPsec] Handling Redirect Loops

2009-07-30 Thread Yoav Nir
Vijar Devarapalli wrote: >Hi Yoav, > >On 7/29/09 9:13 PM, "Yoav Nir" wrote: > >> Hi Vijay. >> >> "default" is usually associated with a particular implementation or >> product. I think it would be better to say "suggested value" rather >> than "default value". > > "default value" is the right te

Re: [IPsec] Question regarding security considerations with NAT-T scenario in IKEv2

2009-07-30 Thread Raj Singh
Hi Tero, On Thu, Jul 30, 2009 at 2:16 PM, Tero Kivinen wrote: > Raj Singh writes: > > 1. Initiator is behind N(P)AT and float the port to (4500, 4500) > > > > and send IKE_AUTH with source port 4500 now N(P)AT changes source port > > as 1024 but there is a man-in-the-middle who changes the por

Re: [IPsec] Handling Redirect Loops

2009-07-30 Thread Vijay Devarapalli
On 7/30/09 1:36 AM, "Tero Kivinen" wrote: > Vijay Devarapalli writes: >> 7. Handling Redirect Loops >> >>The client could end up getting redirected multiple times in a >>sequence, either because of wrong configuration or a DoS attack. The >>client could even end up in a loop with t

[IPsec] I-D Action:draft-ietf-ipsecme-ikev2-redirect-12.txt

2009-07-30 Thread Internet-Drafts
A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the IP Security Maintenance and Extensions Working Group of the IETF. Title : Redirect Mechanism for IKEv2 Author(s) : V. Devarapalli, K. Weniger F