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Egress filters dropping traffic
- Subject: Egress filters dropping traffic
- From: peterehiwe at gmail.com (Peter Ehiwe)
- Date: Sun, 30 Jun 2013 18:08:57 +0100
- In-reply-to: <CAPLq3UNbRFBj=ay5KUbUoFQgk7LJU=-oEq7+woiw-rH-XiVu+g@mail.gmail.com>
- References: <CAPLq3UNbRFBj=ay5KUbUoFQgk7LJU=-oEq7+woiw-rH-XiVu+g@mail.gmail.com>
I usually do ingress acl on CE facing PE interfaces , that way I can provide one level of anti spoofing on IPs "I control" . I've not had the need for an egress ACL yet but then again I think it depends on network design and habits from Day 1.
One use case though may be to mitigate DDOS attack on a customer facing link.
Sent from my iPhone
On Jun 30, 2013, at 5:34 PM, Glen Kent <glen.kent at gmail.com> wrote:
> Hi,
>
> Under what scenarios do providers install egress ACLs which could say for
> eg.
>
> 1. Allow all IP traffic out on an interface foo if its coming from source
> IP x.x.x.x/y
> 2. Drop all other IP traffic out on this interface.
>
> Glen