今天有个客户要求在内网里限制下访问，根据ip端，自己就粗略写了一些，方法比较笨，不过很实用，代码如下：
// 限制ip段访问 public static bool CheckIp() { bool fig = false; // 首先获得客户端ip string clientIp = GetIP(); if (clientIp.Substring( 0, clientIp.LastIndexOf( " . ")) == " 10.57.70 ") { // 判断最后一位数字的范围 int lastNum = Convert.ToInt32(clientIp.Substring(clientIp.LastIndexOf( " . ") + 1)); if (lastNum <= 255 && lastNum > 0) { fig = true; } } else if (clientIp.Substring( 0, clientIp.LastIndexOf( " . ")) == " 10.57.74 ") { int lastNum = Convert.ToInt32(clientIp.Substring(clientIp.LastIndexOf( " . ") + 1)); if (lastNum <= 191 && lastNum >= 0) { fig = true; } } else if (clientIp.Substring( 0, clientIp.LastIndexOf( " . ")) == " 10.57.75 ") { int lastNum = Convert.ToInt32(clientIp.Substring(clientIp.LastIndexOf( " . ") + 1)); if (lastNum <= 63 && lastNum >= 0) { fig = true; } } else if (clientIp.Substring( 0, clientIp.LastIndexOf( " . ")) == " 10.57.76 ") { int lastNum = Convert.ToInt32(clientIp.Substring(clientIp.LastIndexOf( " . ") + 1)); if (lastNum <= 63 && lastNum >= 0) { fig = true; } } else if (clientIp.Substring( 0, clientIp.LastIndexOf( " . ")) == " 10.57.74 ") { int lastNum = Convert.ToInt32(clientIp.Substring(clientIp.LastIndexOf( " . ") + 1)); if (lastNum <= 191 && lastNum >= 128) { fig = true; } } return fig; } public static string GetIP() { // 优先取得代理IP string userHostAddress = HttpContext.Current.Request.ServerVariables[ " HTTP_X_FORWARDED_FOR "]; if ( string.IsNullOrEmpty(userHostAddress)) { // 没有代理IP则直接取客户端IP userHostAddress = HttpContext.Current.Request.ServerVariables[ " REMOTE_ADDR "]; } if ((userHostAddress != null) && !(userHostAddress == string.Empty)) { return userHostAddress; } return " 0.0.0.0 "; }
然后在限制的页面里调用这段代码即可，呵呵，时间关系，没考虑太多，大家可以在简便一些，思路大概就是这样！