什么是DDOS攻击及怎么抵抗DDOS攻击?

一、为何要DDOS? 随着Internet互联网络带宽的增加和多种DDOS黑客工具的不断发布,DDOS拒绝服务攻击的实施越来越容易,DDOS攻击事件正在成上升趋势。出于商业竞争、打击报复和网络敲诈等多种因素,导致很多IDC托管机房、商业站点、游戏服务器、聊天网络等网络服务商长期以来一直被DDOS攻击所困扰,随之而来的是客户投诉、同虚拟主机用户受牵连、法律纠纷、商业损失等一系列问题,因此,解决DDOS攻击问题成为网络服务商必须考虑的头等大事。 二、什么是DDOS? DDOS是英文Distributed Denial of Read More

[总结]Squid服务在实际工作的应用、优化和流量监控

一、squid的推荐学习及基础配置 1.Squid学习指南(彭勇华) http://blog.s135.com/book/squid/ 二,Squid2.6基础配置重要语法详解(抚琴煮酒) http://hi.baidu.com/yuhongchun02 … 523c1c8618bf2e.html 3.squid3.0做反向代理服务器(冷锋) http://hi.baidu.com/billdkj/blog … f379d1f2d38599.html 4.squid3.0与squid.26的区别(NetSeeK,推荐) http://bbs.linuxtone.org/thread-2746-1-1.html 5.squid2.6做反向代理模型(王斌斌 抚琴煮酒) http://hi.baidu.com/yuhongchun02 … 826da4cd1166ac.html 6.squid+iptables透明代理+防火墙终极配置(赵兵) http://hi.baidu.com/yuhongchun02 … Read More

Installing and Configuring Windows Server 2008 SMTP

Installing SMTP Server Feature on Windows 2008 is an easy process requiring only few steps to complete. On this article we will describe a step by step configuration and installation of the SMTP Server feature and how to enable the smtp to relay from local server. Step 1: Opening Server Manager Console and under Features select Add Features Step 2: Selecting SMTP Server option Step 3: Click on Install wait until finish and click close Step 4: Waiting for installation to finish and clicking on Close Step 5: Opening IIS 6.0 Manager under Administrative Tools -> Internet Information Services 6.0 Step 6: Under [SMTP Virtual Server] second mouse click and properties Step 7: Select Relay under Read More

WebsitePanel not creating DNS entries in secondary name server

You must add an IP Address to each Name Server under Configuration > Servers > Click on the name of the first name server and then choose IP Address, then type an IP address (192.168.0.101) and then add. Do the same for the second Name Server (192.168.0.102). Then, in the SimpleDNS Server Service Properties look for the section called “Listening IP Address” , choose the IP Address that you assigned this server and then click the Add button. Do this for BOTH Name Servers and BOTH SimpleDNS Server Services. These IP Addresses are used to tell SimpleDNS which IPs to allow zone transfers from…if they arent specified then SimpleDNS wont allow a zone transfer from your Read More

Websitepanel无法新建网站的解决办法

今天在转移WEBSITEPANEL的时候遇到以下问题,无法新建网站: [8/16/2010 6:35:19 PM] ERROR: ‘Internet Information Services 7.0’ UpdateSite System.NullReferenceException: Object reference not set to an instance of an object. at WebsitePanel.Providers.Web.IIs70.SetWebSiteApplicationPool(WebSite site, Boolean createAppPools) at WebsitePanel.Providers.Web.IIs70.UpdateSite(WebSite site) at WebsitePanel.Server.WebServer.UpdateSite(WebSite site) 将BackupCatelog.xml文件中的对应<AspNetInstalled />字段改成<AspNetInstalled>2</AspNetInstalled>即可正常恢复。   Read More

实战Squid的反向代理在共享IP的VPS上的应用

实战Squid的反向代理在共享IP的VPS上的应用 Web, 服务器 Add comments 八 252009Squid作为一款相当优秀的代理、负载均衡软件,其反向代理功能在提高网站性能上有极大的推动作用,并兼有保护Web服务器、自动负载均衡等功能。今有一服务器,装有VMWare server,其上带着几个VPS,只有一个IP可用。VPS通过NAT访问外网,外网通过IP Forwading访问VPS,IP Read More

wordpress IIRF伪静态规则

将以下规则保存为iirf.ini放到网站根目录即可实现伪静态。 RewriteBase / #store original URL in custom header (substitute for missing REQUEST_URI header in IIS) RewriteHeader X-REWRITE-URL: ^$ %{REQUEST_URI} #uploaded files RewriteRule ^(.*/)?files/$ index.php [L] RewriteCond %{REQUEST_URI} !.*wp-content/plugins.* RewriteRule ^(.*/)?files/(.*) wp-content/blogs.php?file=$2 [L] # add a trailing slash to /wp-admin RewriteCond %{REQUEST_URI} ^.*/wp-admin$ RedirectRule ^(.+)$ $1/ [R=301] RewriteCond %{REQUEST_FILENAME} -f [OR] RewriteCond %{REQUEST_FILENAME} -d RewriteRule . – [L] RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-.*) $2 [L] RewriteRule Read More

防止服务器网卡被禁用

  防止网卡被意外禁用,这个对大家可能没有多大的用途,但如果你有服务器托管在外面,那可就有用了,如果你那天不小心点到了“禁用”,呵呵,那后果我就不用说了吧,你的服务器马上就跟你说拜拜了,而且必须进入机房去重新启用网卡才可以(我就碰到了这样的倒霉事啊)。   闲话不多说,下面说重点:   实现的方法,用组策略来实现。   步骤:   1、运行——》gpedit.msc   2、导航至:用户配置——》管理模板——》网络——》网络连接   3.1、找到“禁止启用/禁用 LAN Read More

iis限制,流量限制与cpu限制的对比

流量限制就是直接限制网络流量,这种限制通常是最严厉的一种流量限制,10个g的流量大体支持50人在线以内.当月流量超过后,在一个月内网站都不能正常访问了,解决办法是升级空间或加大流量!二:cpu限制 cpu限制看起来没有限iis或网络流量,但由于每一个程序运行都需要一定的cpu配额,也是变相的流量限制,通常网页显示在线过多都是由于cpu限额过小引起的!通过刷新或15秒后可以得到暂时的正常运行,通常1%的cpu限额相当于20个iis连接!这对于论坛空间很重要,论坛的cpu限额一旦过小就会不能正常运行!三:iis限制 Read More