Bypassing Port-Security In 2018: Defeating MacSEC and 802.1x-2010Priyanka Aash
"Existing techniques for bypassing wired port security are limited to attacking 802.1x-2004, which does not provide encryption or the ability to perform authentication on a packet-by-packet basis [1][2][3][4]. The development of 802.1x-2010 mitigates these issues by using MacSEC to provide Layer 2 encryption and packet integrity check to the protocol [5]. Since MacSEC encrypts data on a hop-by-hop basis, it successfully protects against the bridge-based attacks pioneered by the likes of Steve Riley, Abb, and Alva Duckwall [5][6].
In addition to the development of 802.1x-2010, improved 802.1x support by peripheral devices such as printers also poses a challenge to attackers. Gone are the days in which bypassing 802.1x was as simple as finding a printer and spoofing address, as hardware manufacturers have gotten smarter.
In this talk, we will introduce a novel technique for bypassing 802.1x-2010 by demonstrating how MacSEC fails when weak forms of EAP are used. Additionally, we will discuss how improved 802.1x support by peripheral devices does not necessarily translate to improved port-security due to the widespread use of weak EAP. Finally, we will consider how improvements to the Linux kernel have made bridge-based techniques easier to implement and demonstrate an alternative to using packet injection for network interaction. We have packaged each of these techniques and improvements into an open source tool called Silent Bridge, which we plan on releasing at the conference."
Bypassing Port-Security In 2018: Defeating MacSEC and 802.1x-2010Priyanka Aash
"Existing techniques for bypassing wired port security are limited to attacking 802.1x-2004, which does not provide encryption or the ability to perform authentication on a packet-by-packet basis [1][2][3][4]. The development of 802.1x-2010 mitigates these issues by using MacSEC to provide Layer 2 encryption and packet integrity check to the protocol [5]. Since MacSEC encrypts data on a hop-by-hop basis, it successfully protects against the bridge-based attacks pioneered by the likes of Steve Riley, Abb, and Alva Duckwall [5][6].
In addition to the development of 802.1x-2010, improved 802.1x support by peripheral devices such as printers also poses a challenge to attackers. Gone are the days in which bypassing 802.1x was as simple as finding a printer and spoofing address, as hardware manufacturers have gotten smarter.
In this talk, we will introduce a novel technique for bypassing 802.1x-2010 by demonstrating how MacSEC fails when weak forms of EAP are used. Additionally, we will discuss how improved 802.1x support by peripheral devices does not necessarily translate to improved port-security due to the widespread use of weak EAP. Finally, we will consider how improvements to the Linux kernel have made bridge-based techniques easier to implement and demonstrate an alternative to using packet injection for network interaction. We have packaged each of these techniques and improvements into an open source tool called Silent Bridge, which we plan on releasing at the conference."
بحث يناقش القراصنة أو الهاكرز من حيث التعريف والتاريخ والنشأة والأقسام . ثم يعرض ابرز المخترقين الأفراد على مر التاريخ وأبرز الهاكرز المجموعات أيضاً . عرض بوربوينت عن الهكر والإختراق ونشأته
Arista Networks - Building the Next Generation Workplace and Data Center Using SDN Architectures
Topics Include:
Enterprise Workplace and Data Center Networking Trend
Arista Networks Introduction
Arista Datacenter Solution
Arista and Aruba joint SDN Solution
بحث يناقش القراصنة أو الهاكرز من حيث التعريف والتاريخ والنشأة والأقسام . ثم يعرض ابرز المخترقين الأفراد على مر التاريخ وأبرز الهاكرز المجموعات أيضاً . عرض بوربوينت عن الهكر والإختراق ونشأته
Arista Networks - Building the Next Generation Workplace and Data Center Using SDN Architectures
Topics Include:
Enterprise Workplace and Data Center Networking Trend
Arista Networks Introduction
Arista Datacenter Solution
Arista and Aruba joint SDN Solution
1. PENYIMPANGAN KDM PNY.ABLASIO RETINA
TRAUMA
Non trauma :
- Retinopati
- Massa di koloid
- Toxomigravidarum
Robekan Pada Retina
Cairan masuk ke belakang mendorong retina
Penimbunan eksudat dibawah retina
Retina terangkat
Peningkatan TIO
(Non Retmatogen)
ABLASIO
Nyeri
Kerusakan Retina
Sel Kerucut dan Batang Retina terpisah
Dan sel epitel pigmen retina
Tidak mampu menerima gelombang cahaya
Ketakutan/ansietas
Ggn.sensori persepsi/visual
Resiko thd cedera
Kurang perawatan diri
Harga diri rendah
Isoslasi Sosial
