页面限制IP访问？

[gzbhappy]

现在我有一个小系统，想增加点功能，限制ＩＰ访问，分为外网访问和内网访问，如何做到只内网访问外网不能访问？
还有一个问题就是如何做到限制用户量访问系统？谢谢

[子夜__]

问题一 可以配置IIS 、 也可以传送门

问题二 也是配置IIS 最大访问人数

[nocallstle]

可以根据判断登录的IP，若IP地址为服务器地址或回环口地址则为内网地址，否则为外地址

[gzbhappy]

我是想用程序来实现，不想配置IIS来实现

[ycproc]

       #region 获取结束IP
        private long GetEndIp()
        {
            //objfs.Seek(endIpOff,SeekOrigin.Begin);
            objfs.Position = endIpOff;
            byte[] buff = new Byte[5];
            objfs.Read(buff, 0, 5);
            this.endIp = Convert.ToInt64(buff[0]) + Convert.ToInt64(buff[1]) * 256 + Convert.ToInt64(buff[2]) * 256 * 256 + Convert.ToInt64(buff[3]) * 256 * 256 * 256;
            this.countryFlag = buff[4];
            return this.endIp;
        }
        #endregion

        #region 获取国家/区域偏移量
        private string GetCountry()
        {
            switch (this.countryFlag)
            {
                case 1:
                case 2:
                    this.country = GetFlagStr(this.endIpOff + 4);
                    this.local = (1 == this.countryFlag) ? " " : this.GetFlagStr(this.endIpOff + 8);
                    break;
                default:
                    this.country = this.GetFlagStr(this.endIpOff + 4);
                    this.local = this.GetFlagStr(objfs.Position);
                    break;
            }
            return " ";
        }
        #endregion

        #region 获取国家/区域字符串
        private string GetFlagStr(long offSet)
        {
            int flag = 0;
            byte[] buff = new Byte[3];
            while (1 == 1)
            {
                //objfs.Seek(offSet,SeekOrigin.Begin);
                objfs.Position = offSet;
                flag = objfs.ReadByte();
                if (flag == 1 || flag == 2)
                {
                    objfs.Read(buff, 0, 3);
                    if (flag == 2)
                    {
                        this.countryFlag = 2;
                        this.endIpOff = offSet - 4;
                    }
                    offSet = Convert.ToInt64(buff[0].ToString()) + Convert.ToInt64(buff[1].ToString()) * 256 + Convert.ToInt64(buff[2].ToString()) * 256 * 256;
                }
                else
                {
                    break;
                }
            }
            if (offSet < 12)
                return " ";
            objfs.Position = offSet;
            return GetStr();
        }
        #endregion

        #region GetStr
        private string GetStr()
        {
            byte lowC = 0;
            byte upC = 0;
            string str = "";
            byte[] buff = new byte[2];
            while (1 == 1)
            {
                lowC = (Byte)objfs.ReadByte();
                if (lowC == 0)
                    break;
                if (lowC > 127)
                {
                    upC = (byte)objfs.ReadByte();
                    buff[0] = lowC;
                    buff[1] = upC;
                    System.Text.Encoding enc = System.Text.Encoding.GetEncoding("GB2312");
                    str += enc.GetString(buff);
                }
                else
                {
                    str += (char)lowC;
                }
            }
            return str;
        }
        #endregion

        #region 获取IP的地理地址
        /// <summary>
        /// 获取IP的地理地址
        /// </summary>
        /// <returns></returns>
        public string IPLocation()
        {
            this.QQwry();
            return this.country + this.local.Replace("CZ88.NET", "");//删除垃圾信息
        }
        /// <summary>
        /// 获取IP的地理地址
        /// </summary>
        /// <param name="dataPath"></param>
        /// <param name="ip"></param>
        /// <returns></returns>
        public string IPLocation(string dataPath, string strip)
        {
            this.dataPath = dataPath;
            this.ip = strip;
            this.QQwry();
            return this.country + this.local.Replace("CZ88.NET", "");//删除垃圾信息
        }
        /// <summary>
        /// 获取IP的地理地址，专门給统计系统用的
        /// </summary>
        /// <param name="strip"></param>
        /// <returns></returns>
        public string IPCountry(string strip)
        {
            this.ip = strip;
            this.QQwry();
            return this.country;
        }
        public string IPLocal(string strip)
        {
            this.ip = strip;
            this.QQwry();

            if (this.local == null)
                return "";
            return this.local.Replace("CZ88.NET", "");//删除垃圾信息
        }

[wuyq11]

获取IP转long判断范围
通过Timer定时查询用户数
System.Net.IPAddress ipaddress = System.Net.IPAddress.Parse("");
long ip= ipaddress.Address;

a * 256 * 256 * 256 + b * 256 * 256 + c * 256 + d; 通过basepage,判断用户