SNMP代理配置windows/linux

问题描述 投票:0回答:1

我需要通过 snmp 检索信息,然后使用此信息在 Unity 中创建某种图形应用程序。

我找到了 SnmpSharpNet 库

我使用这个库统一创建了一个小程序,然后我在我的Windows机器上安装了snmp(使用Windows官方指南),在本地主机上它可以工作!

现在我的问题是 我如何连接到我的局域网网络上的其他代理? 如何在我的其他设备(例如 Linux 电脑)上安装代理? 我有点困惑,因为我尝试在其他 Windows 电脑上安装 snmp,但无法从中检索 snmp 信息;我尝试在 Linux 电脑上安装 snmp 代理,但我不明白如何正确安装必须通过我的局域网进行通信的代理

这是在本地主机上运行的代码

using UnityEngine;
using UnityEngine.UI;
using System.Collections;
using SnmpSharpNet;
using System.Net;


public class SNMP_walk : MonoBehaviour {

[SerializeField] public InputField community_str;
[SerializeField] public InputField agent_ip_address;
[SerializeField] public Button MyButton ;
string str_community  = null;
string ip  = null;
void Start () {
    //test button

    MyButton.onClick.AddListener (() => {
        str_community = community_str.text; 
        ip = agent_ip_address.text;
        Debug.Log (str_community);
        Debug.Log(ip);
        snmp_walk (str_community, ip);
    });
}

// Update is called once per frame
void Update () {

}

void snmp_walk(string str_community, string ip){

    OctetString community = new OctetString (str_community);
    // Define agent parameters class
    AgentParameters param = new AgentParameters (community);
    // Set SNMP version to 1 (or 2)
    // settare in base alla versione usata
    param.Version = SnmpVersion.Ver1;
    // Construct the agent address object
    // IpAddress class is easy to use here because
    //  it will try to resolve constructor parameter if it doesn't *
    //  parse to an IP address
    IpAddress agent = new IpAddress (ip);
    
    // Construct target
    // IP, port,timeout,retry
    UdpTarget target = new UdpTarget ((IPAddress)agent, 161, 4000, 2);
    //necessario per tutte le richieste
    Pdu pdu = new Pdu (PduType.Get);
    
    pdu.VbList.Add ("1.3.6.1.2.1.1.1.0"); //sysDescr
    pdu.VbList.Add("1.3.6.1.2.1.1.2.0"); //sysObjectID
    pdu.VbList.Add("1.3.6.1.2.1.1.3.0"); //sysUpTime
    pdu.VbList.Add("1.3.6.1.2.1.1.4.0"); //sysContact
    pdu.VbList.Add("1.3.6.1.2.1.1.5.0"); //sysName
    pdu.VbList.Add ("1.3.6.1.2.1.25.2.2.0"); //Load for one core
    //pdu.VbList.Add ("1.3.6.1.2.1.25.6.3.1.1.11"); //Memory ? occupata
    //pdu.VbList.Add ("1.3.6.1.2.1.25.3.3.1.2.4"); //CPU ?
    
    SnmpV1Packet result = (SnmpV1Packet)target.Request (pdu, param);
    
    
    // If result is null then agent didn't reply or we couldn't parse the reply.
    if (result != null) {
        // ErrorStatus other then 0 is an error returned by 
        // the Agent - see SnmpConstants for error definitions
        if (result.Pdu.ErrorStatus != 0) {
            // agent reported an error with the request
            Debug.Log ("Error in SNMP reply. Error {"+result.Pdu.ErrorStatus+"} " +
                       "index {"+result.Pdu.ErrorIndex+"}");
                   
        } else {
            // Reply variables are returned in the same order as they were added
            //  to the VbList
            Debug.Log ("sysDescr({"+result.Pdu.VbList [0].Oid.ToString ()+"}) " +
                "({"+SnmpConstants.GetTypeName (result.Pdu.VbList [0].Value.Type)+"}): " +
                "{"+result.Pdu.VbList [0].Value.ToString ()+"}"); 


            Debug.Log("sysObjectID({"+result.Pdu.VbList [1].Oid.ToString ()+"}) " +
                      "({"+SnmpConstants.GetTypeName (result.Pdu.VbList [1].Value.Type)+"}): " +
                      "{"+result.Pdu.VbList [1].Value.ToString ()+"}"); 
        
            Debug.Log("sysUpTime(({"+result.Pdu.VbList [2].Oid.ToString ()+"}) " +
                      "({"+SnmpConstants.GetTypeName (result.Pdu.VbList [2].Value.Type)+"}): " +
                      "{"+result.Pdu.VbList [2].Value.ToString ()+"}"); 

            Debug.Log("sysContact(({"+result.Pdu.VbList [3].Oid.ToString ()+"}) " +
                      "({"+SnmpConstants.GetTypeName (result.Pdu.VbList [3].Value.Type)+"}): " +
                      "{"+result.Pdu.VbList [3].Value.ToString ()+"}"); 
                              
            Debug.Log("sysName(({"+result.Pdu.VbList [4].Oid.ToString ()+"}) " +
                      "({"+SnmpConstants.GetTypeName (result.Pdu.VbList [4].Value.Type)+"}): " +
                      "{"+result.Pdu.VbList [4].Value.ToString ()+"}"); 

            Debug.Log("Total Mem ({"+result.Pdu.VbList [5].Oid.ToString ()+"}) " +
                      "({"+SnmpConstants.GetTypeName (result.Pdu.VbList [5].Value.Type)+"}): " +
                      "{"+result.Pdu.VbList [5].Value.ToString ()+"}"); 

        /*  Debug.Log("CPU ? " + result.Pdu.VbList[6].Oid.ToString()+
                      SnmpConstants.GetTypeName(result.Pdu.VbList[6].Value.Type)+
                      result.Pdu.VbList[6].Value.ToString());*/
                             
        }
    } else {
        Debug.Log ("No response received from SNMP agent.");
    }
    target.Close ();
}

}

感谢您的帮助,抱歉我的英语!

linux snmp net-snmp snmpd
1个回答
1
投票

默认情况下,安装后,Windows 上的 SNMP 代理仅允许来自本地主机的查询。

要允许远程 SNMP 查询,您需要设置 SNMP 服务:

  • 打开

    Windows Services Manager

  • 右键单击

    SNMP Service
    并编辑
    Properties

  • 选择

    Security
    选项卡

enter image description here

从此处添加允许查询 SNMP 代理的远程主机。


编辑:

我知道这只能回答你的部分问题: 无法从 localhost 以外的主机查询 Windows SNMP 代理。

如何在 Linux 上安装/配置 SNMP 代理将是一个完整的其他问题,描述您已尝试过的内容以及不起作用的内容。

C# 代码审查/调试应发布在 SF 姊妹网站上:stackoverflow

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