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We propose a more robust scheme to detect SYN flooding attacks. Existing methods for detecting SYN flooding are based on the protocol behavior of TCP SYN-FIN (RST) or SYN-ACK pairs, as normally the number of SYN packets is equal to that of FIN (added with RST) packets, or ACK packets in the handshake. When SYN flood starts, there will be more SYN packets. However, the attacker can avoid the detection...
Short flow first scheduling (SFF) strategy is effective in obtaining more stringent performance bounds for short flows in Internet. However, previous strict SFF approaches invested the short flows with excessive preference leading to the starvation of other long flows. Moreover, these SFFs are hard to be deployed due to either extreme complexity or the modification of TCP protocol. Inspired by the...
In order to reduce network congestion and fully use link bandwidth, when there are equal-cost-multi-paths (ECMPs) between a forwarding node and a destination subnet, traffic load should be balanced among ECMPs and packets of the same TCP flow should reach destination host in the same order. An algorithm called LRU-based caching with counting (LCC) is proposed. Packet length differentiation is considered...
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