使用 google 提高的 gopacket 库包进行抓包, 拿到的数据往一个 channel 里面怼,如果队列满,则直接抛弃,可以理解为采样。 如何监听多个网卡 google golang gopacket 库默认只能 openlive 一个网卡,没找到可以 openlive 多个设备网卡的相关方法。 那么在 gopacket 如何实现多个设备网卡监听?实例化多个 openlive 实例不就行了,我居然还还提了 issue 询问该问题,当然没人回复我了。 CPU的开销主要在 google gopacket 调用上, cgo 的调用一点也不便宜, 暂时没有好的方法来优化。另外, 进程的流量监控无需太细致,粗粒度采样足够了。 ----
Capturing How can it be used What is libpcap Debug Tools: tcpdump & WinPcap & snoop What is BPF What is gopacket " "github.com/google/gopacket/layers" "github.com/google/gopacket/pcap" ) func main() { fmt.Println " "github.com/google/gopacket/layers" "github.com/google/gopacket/pcap" ) func main(){ handle, err " "github.com/google/gopacket/layers" "github.com/google/gopacket/pcap" "log" "net" buffer = gopacket.NewSerializeBuffer() gopacket.SerializeLayers(buffer, options, &layers.Ethernet
gopacket是什么? gopacket是google出品的golang三方库,质量还是靠的住,项目地址为:github.com/google/gopacket gopacket到底是什么呢? 打开一个设备进行抓包 package main import ( "fmt" "github.com/google/gopacket" "github.com/google/gopacket Layers包是gopacket的Go库中的新功能,在底层libpcap库中不存在。它是gopacket库的非常有用的一部分。它允许我们轻松地识别数据包是否包含特定类型的层。 package main import ( "fmt" "github.com/google/gopacket" "github.com/google/gopacket/layers /gopacket/pcap" "github.com/google/gopacket/tcpassembly" "github.com/google/gopacket/tcpassembly/tcpreader
/content/packet-capture-injection-and-analysis-gopacket 子包: github.com/google/gopacket github.com/google /gopacket/pcap github.com/google/gopacket/layers :解析包用的最多的就是这个包 github.com/google/gopacket/pcapgo 类型: ( packet, layers.LayerTypeEthernet, gopacket.Default) // 复制一份包 // 解析 IP 层 ipPacket := gopacket.NewPacket ( packet, layers.LayerTypeIPv6, gopacket.NoCopy) // 不复制,所以不要修改 // 解析 TCP 层 tcpPacket := gopacket.NewPacket ( data, MyLayerType, gopacket.Default, ) 构造包 buffer = gopacket.NewSerializeBuffer() options := gopacket.SerializeOptions
Codepackage mainimport ("fmt""log""net""github.com/google/gopacket""github.com/google/gopacket/layers = nil {log.Fatal(err)}// handle packetpacketSource := gopacket.NewPacketSource(handle, handle.LinkType := gopacket.NewDecodingLayerParser(layers.LayerTypeEthernet,ðLayer,&ipLayer,&icmpLayer,&payload,) {ComputeChecksums: true, FixLengths: true}buffer := gopacket.NewSerializeBuffer()gopacket.SerializeLayers {ComputeChecksums: true, FixLengths: true}buffer := gopacket.NewSerializeBuffer()gopacket.SerializeLayers
源码相关: https://github.com/timest/goscan 文章关键词 go/golang gopacket 抓包 pcap/libpcap arp nbns mdns manuf gopacket有封装好的ARP报文: type ARP struct { BaseLayer AddrType LinkType // 硬件类型 Protocol net.HardwareAddr{0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, DstProtAddress: dstIp, } buffer := gopacket.NewSerializeBuffer () var opt gopacket.SerializeOptions gopacket.SerializeLayers(buffer, opt, ether, a) outgoingPacket log.Fatal("pcap打开失败:", err) } defer handle.Close() handle.SetBPFFilter("arp") ps := gopacket.NewPacketSource
得益于谷歌的包: github.com/google/gopacket github.com/google/gopacket/layers github.com/google/gopacket/pcap } else { log.Infoln("Start listen the device ", device) packetSource := gopacket.NewPacketSource tcp := &layers.TCP{} err := tcp.DecodeFromBytes(tran.LayerContents(), gopacket.NilDecodeFeedback
go-internals - 深入理解Go语言 The Little Go Book - Google Go语言编程书 book - 雨痕Go 学习笔记 Hacking-with-Go - Golang黑客编程 库 gopacket
在上面分析中知道了,Masscan和Zmap都使用了pcap,pfring这些组件来原生发包,值得高兴的是go官方也有原生支持这些的包 https://github.com/google/gopacket package main import ( "fmt" "github.com/google/gopacket" "github.com/google/gopacket/layers" "github.com /google/gopacket/pcap" "log" "net" "sync" "time" ) var ( SrcIP string = "10.x.x.x" // promiscuous, timeout) // Use the handle as a packet source to process all packets packetSource := gopacket.NewPacketSource () err := gopacket.SerializeLayers( buf, gopacket.SerializeOptions{
其抓包原理是基于https://github.com/google/gopacket包实现的。
Cyber-Security: IPv6 & Security Cyber-Security: 中国香港警务处网络安全与科技罪案调查科 浅谈基于数据分析的网络态势感知 网络数据包的捕获与分析(libpcap、BPF及gopacket
介绍 k8spacket 是用 Golang 编写的一个工具,它使用 gopacket 第三方库来嗅探工作负载上的 TCP 数据包(传入和传出),它在运行的容器网络接口上创建 TCP 监听器。
以然后安装gopacket,即针对libpcap的Go封装器。
goreplay(https://github.com/buger/goreplay)是基于libpcap的流量录制工具,它依赖包https://github.com/google/gopacket ,而gopacket是对libpcap和npcap的go封装。
强悍的抓包能力 采用 gopacket 和 pcap 技术栈,FastMonitor 能够高效捕获网络数据包,并自动按照五元组会话进行分类。
cd $GOPATH"/src/vxlan-to-http-request" go mod init vxlan-to-http-request go get "github.com/google/gopacket
一个开源的流量回放工具,支持多种类型流量的实时及离线回放; Sharingan:基于Golang的流量录制回放工具,通过修改Golang源码,加钩子拦截并镜像流量; GoReplay:Golang编写的开源工具,利用gopacket
kubernetes 的TCP 数据包可视化介绍k8spacket是用 Golang 编写的工具,它使用gopacket第三方库来嗅探工作负载(传入和传出)上的 TCP 数据包。 listen refreshPeriod: "10s" assembler: ## See: https://pkg.go.dev/github.com/google/gopacket
Preview SDN 技术指南(七):产业联盟与标准化组织 Preview SDN 技术指南(八):案例 浅谈基于数据分析的网络态势感知 网络数据包的捕获与分析(libpcap、BPF及gopacket
即数据包捕获函数库,tcpdump也是基于这个库实现的,Libpcap是C语言写的,Go语言不能直接调用C语言,需要使用CGo,所以goreplay可以直接使用谷歌的包github.com/google/gopacket