how to avoid ddos attack

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#!/bin/sh#date:2015-12-13#filename:fang-dos.sh #version: v1.0while truedo #awk ' {print $} ' Access_2015-12-15.log|grep-v "^$" |sort|uniq-c >/tmp/tmp.log netstat-an|grep est|awk-f ' [:]+ ' { Print $6} ' |sort|uniq-c >/tmp/tmp.log exec For more information, please visit Li Hing Lee BlogShell anti-DDoS attack principle

vswitch, it hides a serious risk in your virtual LAN. A site can easily prove that it is using an 802.1q-encapsulated switch, thus creating a relay link and becoming a member of all Virtual LAN. Thanks to Cisco's latest IOS operating system, this security vulnerability has been fixed. To avoid possible Virtual LAN jump attacks, do not use the "dynamic" mode at the interface level, and set the network to "relay" or "access" type. Address Resolution Pr

Problem Description:System: CentOS 6.xYum-y Install AnsibleRun ansible command, after error:Ansible all-m Ping/usr/lib64/python2.6/site-packages/crypto/util/number.py:57: Powminsecurewarning:not using Mpz_powm_sec. You should rebuild using LIBGMP >= 5 to avoid timing attack vulnerability._warn ("Not using MPZ_POWM_SEC. You should rebuild using LIBGMP >= 5 to avoid