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Source: Suhas Desai - Posted by Benjamin D. Thomas
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In this paper, we describe and analyze a network based DoS at¬tack for IP based networks. It is known as SYN flooding. It works by an attacker sending many TCP connection re¬quests with spoofed source addresses to a victim's machine. Each request causes the targeted host to instantiate data structures out of a limited pool of resources to deny further legitimate access.
Part I
Part II
Part III
Part IV
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Posted by Pax Dickinson
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Hi, and welcome back. Today in Hacks From Pax we're going to shift
gears a little, step back for a higher level view and talk about the
year in security from a Linux standpoint, both the good and the bad, and
have a brief discussion of trends for the coming year.
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Source: Suhas Desai - Posted by Benjamin D. Thomas
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Service Providers are scrambling to offer voice, video, data and
innovative services such as gaming, interactive TV and messaging, on
a single pipe. At the same time, network equipment is being upgraded
to IPV6.But some Real-Time IPV6 Security overwhelms performance due
to the application intelligence which is the rapid inspection of
VoIP signaling SIP, H.323 and audio packets, and the prompt opening
and shutting of "pinholes" to allow the passage of valid voice traffic
over wireless networks. |
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Source: Dancho Danchev - Posted by Pax Dickinson
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Malware has truly evolved during the last couple of
years. Its potential for financial and network based abuse was
quickly realized, and thus, tactics changed, consolidation between
different parties occurred, and the malware scene became overly
monetized, with its services available on demand.
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Source: Suhas Desai - Posted by Benjamin D. Thomas
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When a normal TCP connection starts, a destination host receives
a SYN (synchronize/start) packet from a source host and sends back
a SYN ACK (synchronize acknowledge). The destination host must then
hear an ACK (acknowledge) of the SYN ACK before the connection is
established. This is referred to as the "TCP three-way handshake." |
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