Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Protecting Public-Access Sites Against Distributed Denial-of-Service
  Attacks   A distributed denial-of-service (DDoS) attack can flood a victim site with
malicious traffic, causing service disruption or even complete failure.
Public-access sites like amazon or ebay are particularly vulnerable to such
attacks, because they have no way of a priori blocking unauthorized traffic.
  We present Active Internet Traffic Filtering (AITF), a mechanism that
protects public-access sites from highly distributed attacks by causing
undesired traffic to be blocked as close as possible to its sources. We
identify filters as a scarce resource and show that AITF protects a significant
amount of the victim's bandwidth, while requiring from each participating
router a number of filters that can be accommodated by today's routers. AITF is
incrementally deployable, because it offers a substantial benefit even to the
first sites that deploy it.

11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an