{"id":405,"date":"2018-03-14T15:22:27","date_gmt":"2018-03-14T07:22:27","guid":{"rendered":"http:\/\/www.max-shu.com\/blog\/?p=405"},"modified":"2018-03-14T15:22:27","modified_gmt":"2018-03-14T07:22:27","slug":"%e4%bd%bf%e7%94%a8vmware%e8%99%9a%e6%9c%bacentos7-x%e5%ae%9e%e7%8e%b0%e7%bd%91%e5%85%b3%e3%80%81dhcp%e3%80%81%e4%bf%ae%e6%94%b9http-user-agent%e5%ad%97%e6%ae%b5%ef%bc%88%e7%bb%95%e8%bf%87%e6%b7%b1","status":"publish","type":"post","link":"http:\/\/www.max-shu.com\/blog\/?p=405","title":{"rendered":"\u4f7f\u7528VMWare\u865a\u673aCentos7.x\u5b9e\u73b0\u7f51\u5173\u3001DHCP\u3001\u4fee\u6539HTTP User-Agent\u5b57\u6bb5\uff08\u7ed5\u8fc7\u6df1\u4fe1\u670d\u3001\u7eff\u76df\u7b49\u5bf9\u8be5\u5b57\u6bb5\u7684\u68c0\u6d4b\uff09"},"content":{"rendered":"
\u8d77\u56e0\uff1a<\/span><\/b><\/div>\n
\u670b\u53cb\u516c\u53f8\u4e0a\u5916\u7f51\u6709\u9650\u5236\uff1a<\/div>\n
1. \u4e0d\u80fd\u5efa\u7acb\u5185\u7f51wifi\u7ed9\u624b\u673a\u4e0a\u7f51\u7528\uff1b<\/div>\n
2. \u5fc5\u987b\u5728\u4e0a\u5916\u7f51\u7684\u7535\u8111\u4e0a\u5b89\u88c5\u6df1\u4fe1\u670d\u6216\u7eff\u76df\u7684\u5ba2\u6237\u7aef\u3002<\/div>\n
<\/div>\n
\u89e3\u51b3\u65b9\u6848\uff1a<\/span><\/b><\/div>\n
\u4e3a\u4e86\u89e3\u51b3\u80fd\u7528\u624b\u673a\u901a\u8fc7\u5185\u7f51wifi\u4e0a\u7f51\uff0c\u7814\u7a76\u4e86\u4e0b\uff0c\u4ee5\u4e0b\u89e3\u51b3\u65b9\u6848\u53ef\u5b9e\u73b0\uff1a<\/div>\n
1. \u56e0\u4e3a\u4e0a\u5916\u7f51\u5fc5\u987b\u5b89\u88c5\u5ba2\u6237\u7aef\uff0c\u56e0\u6b64\u5fc5\u987b\u5728\u5df2\u7ecf\u5b89\u88c5\u4e86\u8fd9\u7c7b\u5ba2\u6237\u7aef\u7684\u5df2\u7ecf\u80fd\u4e0a\u5916\u7f51\u7684\u7535\u8111\u4e0a\u60f3\u529e\u6cd5\uff0c\u4e0d\u80fd\u76f4\u63a5\u4f7f\u7528wifi\u8def\u7531\u5668\u8fde\u63a5\u5230\u5185\u7f51\uff08\u4f1a\u63d0\u793a\u9700\u8981\u5b89\u88c5\u5ba2\u6237\u7aef\u624d\u80fd\u8bbf\u95ee\u5916\u7f51\uff09\uff0c\u6240\u4ee5\u4f7f\u7528\u5728\u8be5\u7535\u8111\u4e0a\u5b89\u88c5\u865a\u673a\uff0c\u628a\u8be5\u865a\u673a\u505a\u6210\u7f51\u5173\u548cDHCP\u670d\u52a1\u5668\u6765\u4f5c\u4e3a\u8def\u7531\u5668\u4f7f\u7528\u3002<\/div>\n
2. \u56e0\u4e3a\u6df1\u4fe1\u670d\u3001\u7eff\u76df\u8fd9\u7c7b\u6d41\u6c13\u4f1a\u68c0\u6d4bHTTP\u7684Header\u5b57\u6bb5User-Agent\uff0c\u4ece\u800c\u5224\u65ad\u662f\u624b\u673a\u4e0a\u7f51\u8fd8\u662f\u7535\u8111\u4e0a\u7f51\uff08\u6709\u624b\u673a\u4e0a\u7f51\u7684\u5305\u5219\u4f1a\u63d0\u793a\u516c\u53f8\u5185\u90e8\u4e0d\u51c6\u4f7f\u7528wifi\u8def\u7531\u5668\uff09\uff08\u522b\u95ee\u6211\u600e\u4e48\u77e5\u9053\u7684\uff0c\u731c\u7684\u884c\u4e0d\u884c\uff09\uff0c\u6240\u4ee5\u9700\u8981\u5728IP\u5305\u8fdb\u5165\u516c\u53f8\u5185\u7f51\u524d\u8fdb\u884cIP\u5305\u7684\u4fee\u6539\uff0c\u628a\u624b\u673a\u6765\u7684User-Agent\u6a21\u4eff\u6210\u7535\u8111\u6765\u7684\u3002<\/div>\n
<\/div>\n
\u4ee5\u4e0b\u662f\u5177\u4f53\u64cd\u4f5c\u548c\u4ee3\u7801\uff1a<\/span><\/b><\/div>\n
\u4e3b\u673a\u5fc5\u987b\u5177\u6709\u4e24\u4e2a<\/u><\/b>\u7f51\u5361<\/span>\uff1a<\/div>\n
\u4e00\u4e2a\u63a5\u5916\u7f51\uff0c\u540d\u4e3a\u201c\u672c\u5730\u8fde\u63a5\u201d\uff0c\u8bbe\u7f6e\u4e3a\u5171\u4eab\uff0c\u5171\u4eab\u7ed9VMware Network Adapter VMnet8\uff1b<\/div>\n
\u4e00\u4e2a\u63a5\u5185\u7f51\uff0c\u540d\u4e3a\u201c\u672c\u5730\u8fde\u63a52\u201d\uff0c\u5148\u4e0d\u914d\u7f6e\u3002<\/div>\n
<\/div>\n
\u5728VMWare\u91cc\u9762\u7f16\u8f91\u201c\u865a\u62df\u7f51\u7edc\u7f16\u8f91\u5668\u201d\uff1a<\/div>\n
VMnet0\u5bf9\u5e94\u6865\u63a5\u6a21\u5f0f\uff0c\u548c\u201c\u672c\u5730\u8fde\u63a52\u201d\u7684\u7f51\u53e3\u5361\u6865\u63a5\uff1b<\/div>\n
VMnet8\u5bf9\u5e94nat\u6a21\u5f0f\uff0c\u81ea\u52a8\u4f1a\u548c\u4e0a\u9762\u7684\u201c\u672c\u5730\u8fde\u63a5\u201d\u5171\u4eab\u4e0a\u7f51\u3002<\/div>\n
<\/div>\n
\u5efa\u7acbCentos7.x\u865a\u673a\uff0c\u5efa\u7acb\u4e24\u4e2a\u7f51\u5361\uff1a<\/div>\n
en16777736\uff1a \u4f7f\u7528nat\u65b9\u5f0f\uff0c\u63a5\u4e3b\u673a\u7684VMnet8\uff08VMWare\u7684nat\u65b9\u5f0f\u63a5\u53e3\uff0c\u901a\u8fc7\u4e3b\u673a\u7684\u201c\u672c\u5730\u8fde\u63a5\u201d\u4e0a\u5916\u7f51\uff09\uff1b<\/div>\n
en33554984\uff1a \u4f7f\u7528Bridge\u65b9\u5f0f\uff0c\u6865\u63a5\u4e3b\u673a\u7684VMnet0\uff08VMware\u7684Bridge\u65b9\u5f0f\u63a5\u53e3\uff0c\u901a\u8fc7\u4e3b\u673a\u7684\u201c\u672c\u5730\u8fde\u63a52\u201d\u63a5\u5185\u7f51\uff0c\u7ed9\u9700\u8981\u4e0a\u5916\u7f51\u7684\u7535\u8111\u4f7f\u7528\uff09\u3002<\/div>\n
<\/div>\n
\u914d\u7f6e\u865a\u673a\u7684\u7f51\u53e3\uff1a<\/b><\/div>\n
en16777736\uff1a\u4f7f\u7528dhcp client\u65b9\u5f0f\u53d6\u5f97ip\u5730\u5740\u3001\u7f51\u5173\u548cdns\u5373\u53ef\uff0c\u6b64\u65f6\u865a\u673a\u53ef\u4e0a\u7f51\uff1a<\/div>\n
# ping news.163.com<\/div>\n
<\/div>\n
en33554984\uff1a\u9759\u6001\u914d\u7f6e\uff1a<\/div>\n
# vi \/etc\/sysconfig\/network-scripts\/ifcfg-eno33554984<\/div>\n
TYPE=Ethernet<\/div>\n
DEVICE=eno33554984<\/div>\n
ONBOOT=yes<\/div>\n
BOOTPROTO=static<\/div>\n
IPADDR=192.168.211.1<\/div>\n
NETMASK=255.255.255.0<\/div>\n
GATEWAY=<\/div>\n
# systemctl restart NetworkManager<\/div>\n
\u914d\u7f6e\u4e3b\u673a\u7684\u201c\u672c\u5730\u8fde\u63a52\u201d\u7684IP\u4e3a192.168.211.2\uff0c\u7f51\u5173\u4e3a192.168.211.1\uff0c\u5728\u4e3b\u673a\u4e0a\u770b\u770b\u662f\u5426\u80fdping 192.168.211.1<\/div>\n
\u5728\u865a\u673a\u4e0a\u770b\u770b\u80fd\u5426ping 192.168.211.2<\/div>\n
<\/div>\n
\u914d\u7f6e\u865a\u673a\u4e3aDHCP\u670d\u52a1\u5668\uff1a<\/b><\/div>\n
# vi \/etc\/dhcp\/dhcpd.conf<\/div>\n
log-facility local7;<\/div>\n
subnet 192.168.211.0 netmask 255.255.255.0 {<\/div>\n
\u00a0 \u00a0 range 192.168.211.10 192.168.211.240;<\/div>\n
\u00a0 \u00a0 option domain-name-servers 202.96.134.133 8.8.4.4;<\/div>\n
\u00a0 \u00a0 option domain-name “www.maxshu.com”;<\/div>\n
\u00a0 \u00a0 option broadcast-address 192.168.211.255;<\/div>\n
\u00a0 \u00a0 default-lease-time 600;<\/div>\n
\u00a0 \u00a0 max-lease-time 7200;<\/div>\n
}<\/div>\n
# systemctl restart dhcpd<\/div>\n
# systemctl enable dhcpd<\/div>\n
\u5185\u90e8\u627e\u53f0\u7535\u8111\uff0c\u7528\u52a8\u6001\u5730\u5740\u65b9\u5f0f\u770b\u80fd\u5426\u53d6\u5230ip\u5730\u5740\u3001\u7f51\u5173\u3001dns\u5730\u5740\u3002<\/div>\n
<\/div>\n
\u914d\u7f6e\u865a\u673a\u4e3a\u5185\u90e8\u7535\u8111\u7684\u7f51\u5173\uff1a<\/b><\/div>\n
\u914d\u7f6e\u8f6c\u53d1\uff1a<\/div>\n
# vi \/etc\/sysctl.conf<\/div>\n
net.ipv4.ip_forward=1<\/div>\n
# sysctl -p<\/div>\n
\u914d\u7f6e\u9632\u706b\u5899\uff0c\u628a\u6240\u6709\u6d41\u91cfnat\u5230eno1677736\u8fd9\u4e2a\u53ef\u4e0a\u5916\u7f51\u7684\u7f51\u53e3\uff1a<\/div>\n
# firewall-cmd \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0–direct –add-rule ipv4 nat\u00a0 \u00a0 POSTROUTING 0 -o eno16777736 -j MASQUERADE<\/div>\n
# firewall-cmd –permanent –direct –add-rule ipv4 nat\u00a0 \u00a0 POSTROUTING 0 -o eno16777736 -j MASQUERADE<\/div>\n
\u914d\u7f6e\u9632\u706b\u5899\uff0c\u628a\u6240\u6709\u4eceeno33554984\u8fd9\u4e2a\u5185\u90e8\u7f51\u7edc\u6765\u7684\u6d41\u91cf\u524d\u8f6c\u5230ACCEPT\uff1a<\/div>\n
# firewall-cmd \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0–direct –add-rule ipv4 filter FORWARD 0\u00a0 \u00a0 \u00a0-i eno33554984 -j ACCEPT<\/div>\n
# firewall-cmd –permanent –direct –add-rule ipv4 filter FORWARD 0\u00a0 \u00a0 \u00a0-i eno33554984 -j ACCEPT<\/div>\n
\u6d4b\u8bd5\uff1a<\/div>\n
\u4e0a\u9762\u5df2\u7ecf\u53d6\u5f97\u5730\u5740\u7684\u7535\u8111\uff0c\u770b\u80fd\u5426ping 8.8.4.4<\/div>\n
<\/div>\n
\u4fee\u6539\u6240\u6709\u5185\u7f51\u6765\u7684\u624b\u673a\u4e0a\u7f51http\u5305\u7684User-Agent\u5b57\u6bb5\u4e3a\u7535\u8111\u4e0a\u7f51\u65b9\u5f0f\uff08\u53ef\u4ee5\u7ed5\u8fc7\u6df1\u4fe1\u670d\u3001\u7eff\u76df\u8fd9\u7c7b\u68c0\u6d4b\u5185\u7f51\u662f\u5426\u6709wifi\u8def\u7531\u5668\u7684\u529f\u80fd\uff09\uff1a<\/b><\/div>\n
\u5c31\u662f\u628ahttp\u5305\u91cc\u9762\u5e26\u6709Android\u4e4b\u7c7b\u7684User-Agent\u6539\u4e3a\uff1aMozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/54.0.2840.99 Safari\/537.36\\r\\n<\/b><\/div>\n
# yum install kernel-headers<\/div>\n
# yum install python-devel<\/div>\n
# yum install gcc<\/div>\n
\u4e0b\u8f7d\u5b89\u88c5\u51e0\u4e2a\u7f51\u7edc\u8fc7\u6ee4\u7684\u5305\uff1a<\/div>\n
# rpm -ivh libnfnetlink-1.0.1-4.el7.x86_64.rpm<\/div>\n
# rpm -ivh libnfnetlink-devel-1.0.1-4.el7.x86_64.rpm<\/div>\n
# rpm -ivh libnetfilter_queue-1.0.2-1.el7.x86_64.rpm<\/div>\n
# rpm -ivh libnetfilter_queue-devel-1.0.2-1.el7.x86_64.rpm<\/div>\n
\u4e0b\u8f7d\u5b89\u88c5python\u7684netfilterqueue\uff1a<\/div>\n
# yum install wget<\/div>\n
# wget\u00a0https:\/\/bootstrap.pypa.io\/get-pip.py<\/a><\/div>\n
# python get-pip.py<\/div>\n
# pip install\u00a0netfilterqueue<\/div>\n
# pip install scapy<\/div>\n
<\/div>\n
\u81ea\u5df1\u5199\u51e0\u4e2a\u811a\u672c\u6765\u4fee\u6539IP\u5305\uff08\u6700\u597d\u4e0d\u8981\u52a0\u5165\u81ea\u542f\u52a8\uff09\uff1a<\/b><\/div>\n
\u542f\u52a8\uff08\u5fc5\u987b\u5148\u542f\u52a8py\u811a\u672c\uff0c\u518d\u8bbe\u7f6e\u9632\u706b\u5899\uff0c\u5426\u5219\u4e00\u65e6\u9632\u706b\u5899\u8bbe\u7f6e\uff0c\u7f51\u7edc\u5305\u5c31\u51fa\u4e0d\u6765\u4e86\uff0c\u56e0\u4e3a\u8fd9\u6761\u89c4\u5219\u7684\u529f\u80fd\u5c31\u662f\u628a\u5305\u9001\u5f80py\u811a\u672c\u91cc\u9762\u7684NetfilterQueue\u53bb\u5904\u7406\uff0c\u8c03\u8bd5\u65f6\u53ef\u4f7f\u7528-d\u6307\u5b9a\u5177\u4f53\u7684\u76ee\u7684\u5730\u5740\u6765\u8fdb\u884c<\/b>\uff09\uff1a<\/div>\n
# cat http_modify_start.sh<\/div>\n
nohup .\/http_modify.py &<\/div>\n
echo “$!” > http_modify.pid<\/div>\n
firewall-cmd –direct –add-rule ipv4 mangle POSTROUTING 0 -j NFQUEUE<\/div>\n
# for DEBUG: \u00a0firewall-cmd –direct –add-rule ipv4 mangle POSTROUTING 0 -d 192.168.60.60 -j NFQUEUE<\/div>\n
# firewall-cmd –direct –remove-rule ipv4 mangle POSTROUTING 0 -j NFQUEUE<\/div>\n
<\/div>\n
\u505c\u6b62\uff08\u5fc5\u987b\u505c\u6b62\u9632\u706b\u5899\uff0c\u518dkill\u6389py\u811a\u672c\uff0c\u5426\u5219\u4e00\u65e6py\u811a\u672c\u88ab\u6740\uff0c\u7f51\u7edc\u5305\u5c31\u51fa\u4e0d\u6765\u4e86<\/b>\u00a0\uff09\uff1a<\/div>\n
# cat http_modify_stop.sh<\/div>\n
firewall-cmd –direct –remove-rule ipv4 mangle POSTROUTING 0 -j NFQUEUE<\/div>\n
kill `cat http_modify.pid`<\/div>\n
<\/div>\n
\u4fee\u6539http\u5305\u5185\u5bb9\uff08\u6ce8\u610fbind\u65f6\u4f7f\u7528\u7684\u662f\u9ed8\u8ba4\u9632\u706b\u5899\u961f\u5217num 0\uff0c\u4e0a\u9762\u9632\u706b\u5899\u89c4\u5219\u4e5f\u662f\u4f7f\u7528\u7684\u9ed8\u8ba4\u503c0\uff08\u6ca1\u914d\u7f6e\uff09<\/b>\uff09\uff1a<\/div>\n
# cat http_modify.py<\/div>\n
#!\/usr\/bin\/env python<\/div>\n
<\/div>\n
from netfilterqueue import NetfilterQueue<\/div>\n
import re<\/div>\n
from scapy.all import *<\/div>\n
def callback(payload):<\/div>\n
\u00a0 \u00a0 data = payload.get_payload()<\/div>\n
\u00a0 \u00a0 pkt = IP(data)<\/div>\n
\u00a0 \u00a0 #print “================================================”<\/div>\n
\u00a0 \u00a0 #ls(pkt)<\/div>\n
\u00a0 \u00a0 #print pkt.src<\/div>\n
\u00a0 \u00a0 #print pkt.dst<\/div>\n
<\/div>\n
\u00a0 \u00a0 if pkt.haslayer(TCP) and pkt.haslayer(Raw):<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 #print “Old IP Pkg:”<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 #ls(pkt[IP])<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 tcpPayload = re.sub(“User-Agent:.*Android.*\\r\\n”, “User-Agent: Mozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/54.0.2840.99 Safari\/537.36\\r\\n” , str(pkt[TCP].payload))<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 tcpPayload = re.sub(“User-Agent:.*iPhone.*\\r\\n”, “User-Agent: Mozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/54.0.2840.99 Safari\/537.36\\r\\n”, \u00a0tcpPayload)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 # print “=== HEX:TCP Payload:==>”<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 # print\u00a0 hexdump(tcpPayload)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 # print “<===”<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 rawPkt = Raw(tcpPayload)<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 # print “TCP Raw Pkg:”<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 # ls(rawPkt)<\/div>\n
<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 # pkt[IP].ttl = 40<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 # print ‘Modified TTL: ‘ + str(pkt[IP].ttl)<\/div>\n
<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ipPkt = IP()<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ipPkt.version = pkt[IP].version<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ipPkt.ihl = pkt[IP].ihl<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ipPkt.tos = pkt[IP].tos<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ipPkt.id = pkt[IP].id<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ipPkt.flags = pkt[IP].flags<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ipPkt.frag = pkt[IP].frag<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ipPkt.ttl = pkt[IP].ttl<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ipPkt.proto = pkt[IP].proto<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ipPkt.src = pkt[IP].src<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ipPkt.dst = pkt[IP].dst<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 ipPkt.options = pkt[IP].options<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 del ipPkt[IP].chksum\u00a0 \u00a0# for auto calculate<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 del ipPkt[IP].len\u00a0 \u00a0 \u00a0 # for auto calculate<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 tcpPkt = TCP()<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 tcpPkt.sport = pkt[TCP].sport<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 tcpPkt.sport = pkt[TCP].sport<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 tcpPkt.dport = pkt[TCP].dport<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 tcpPkt.seq = pkt[TCP].seq<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 tcpPkt.ack = pkt[TCP].ack<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 tcpPkt.dataofs = pkt[TCP].dataofs<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 tcpPkt.reserved = pkt[TCP].reserved<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 tcpPkt.flags = pkt[TCP].flags<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 tcpPkt.window = pkt[TCP].window<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 tcpPkt.urgptr = pkt[TCP].urgptr<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 tcpPkt.options = pkt[TCP].options<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 del tcpPkt[TCP].chksum\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 # for auto calculate<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 newPkt = ipPkt\/tcpPkt\/rawPkt<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 newPkt = newPkt.__class__(str(newPkt))\u00a0 # this will lead to auto calculate TCP checksum, IP checksum, IP length.<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 #print “New IP Pkg:”<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 #ls(newPkt)<\/div>\n
<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 payload.set_payload(str(newPkt))<\/div>\n
<\/div>\n
\u00a0 \u00a0 payload.accept()<\/div>\n
<\/div>\n
<\/div>\n
def main():<\/div>\n
\u00a0 \u00a0 q = NetfilterQueue()<\/div>\n
\u00a0 \u00a0 q.bind(0, callback)<\/div>\n
\u00a0 \u00a0 try:<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 print “Start http_modify.py …\\r\\n”<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 q.run() # Main loop<\/div>\n
\u00a0 \u00a0 except KeyboardInterrupt:<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 q.unbind()<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 print “Finished http_modify.py!\\r\\n”<\/div>\n
<\/div>\n
main()<\/div>\n","protected":false},"excerpt":{"rendered":"

\u8d77\u56e0\uff1a \u670b\u53cb\u516c\u53f8\u4e0a\u5916\u7f51\u6709\u9650\u5236\uff1a 1. \u4e0d\u80fd\u5efa\u7acb\u5185\u7f51wifi\u7ed9\u624b\u673a\u4e0a\u7f51\u7528\uff1b 2. \u5fc5\u987b\u5728\u4e0a\u5916\u7f51\u7684\u7535\u8111\u4e0a\u5b89\u88c5\u6df1\u4fe1\u670d …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[186],"tags":[128,162,91,342,339,189,282,340,341,170],"class_list":{"0":"post-405","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-186","7":"tag-centos","8":"tag-dhcp","9":"tag-ip","11":"tag-user-agent","12":"tag-vmware","13":"tag-282","14":"tag-340","15":"tag-341","16":"tag-170"},"views":2074,"_links":{"self":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/405","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=405"}],"version-history":[{"count":1,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/405\/revisions"}],"predecessor-version":[{"id":406,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/405\/revisions\/406"}],"wp:attachment":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=405"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=405"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=405"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}