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dnsmasq国内外域名分流系统搭建

發布時間:2024/3/26 windows 42 豆豆
生活随笔 收集整理的這篇文章主要介紹了 dnsmasq国内外域名分流系统搭建 小編覺得挺不錯的,現在分享給大家,幫大家做個參考.

一、域名分流系統原理? ??

? ? dnscrypt-proxy是一個搭建DNS服務器的程序,但它也并非僅僅是一個程序這么簡單,它還是一個為了防止域名污染公益項目。由OpenDNS主導(思科公司的子公司),它在全球部署了許多可靠的DNS服務器,彼此間通過加密通道傳輸信息。dnsmasq支持dns及dns緩存、dhcp、tftp等服務,為了實現國內外域名分流,使用dnscrypt-proxy搭配dnsmasq。我們在訪問國內網站的時候,dnscrypt-proxy服務器在國外,域名解析速度比較慢,因此訪問國內網站的時候可以通過dnsmasq來進行訪問。

? ? 因此所有域名,首先都發送到dnsmasq通道,如果是國內域名,dnsmasq調用上層國內DNS服務器返回國內域名所對應的IP,達到高速解析的效果。如果dnsmasq發現是國外域名,則放棄解析,轉交給dnscrypt,通過加密通道訪問其部署在全球的可靠的DNS服務器,返回沒有污染的、真實的IP。

? ? ?dnsmasq無法識別國內外域名,但是可以通過GFW列入黑名單的國外域名清單gfwlist來分流,gfwlist中的域名走國外路線,其余域名走國內路線

? ? ?本系統在Ubuntu20.04和CentOS8.2系統上都搭建成功過,原文是在CentOS系統上實現的,因此,本文記錄Ubantu系統搭建過程

二、系統搭建

1、安裝dnscrypt-proxy

apt update apt install dnscrypt-porxy

配置dnscrypt-proxy,主要修改dnscrypt-proxy.toml和dnscrypt-proxy.socket

vi /etc/dnscrypt-proxy/dnscrypt-proxy.toml

將listen_addresses中的地址刪除,改為listen_addresses = []

# Empty listen_addresses to use systemd socket activation listen_addresses = [] server_names = ['cloudflare'][query_log]file = '/var/log/dnscrypt-proxy/query.log'[nx_log]file = '/var/log/dnscrypt-proxy/nx.log'[sources][sources.'public-resolvers']url = 'https://download.dnscrypt.info/resolvers-list/v2/public-resolvers.md'cache_file = '/var/cache/dnscrypt-proxy/public-resolvers.md'minisign_key = 'RWQf6LRCGA9i53mlYecO4IzT51TGPpvWucNSCh1CBM0QTaLn73Y7GFO3'refresh_delay = 72prefix = ''

修改dnscrypt-proxy.socket中Socket小節

vi /usr/lib/systemd/system/dnscrypt-proxy.socket

修改成以下內容:

[Unit] Description=dnscrypt-proxy listening socket Documentation=https://github.com/DNSCrypt/dnscrypt-proxy/wiki Before=nss-lookup.target Wants=nss-lookup.target Wants=dnscrypt-proxy-resolvconf.service[Socket] ListenStream= ListenDatagram= ListenStream=127.0.0.1:53 ListenStream=[::1]:53 ListenDatagram=127.0.0.1:53 ListenDatagram=[::1]:53 #ListenStream=127.0.2.1:53 #ListenDatagram=127.0.2.1:53 NoDelay=true DeferAcceptSec=1[Install] WantedBy=sockets.target

保存完后,執行以下命令讓他們開機自啟:

systemctl daemon-reload systemctl start dnscrypt-proxy.socket systemctl enable dnscrypt-proxy.socket systemctl start dnscrypt-proxy.service systemctl enable dnscrypt-proxy.service

2.安裝dnsmasq

apt install dnsmasq

修改dnsmasq.conf.文件

vi /etc/dnsmasq.conf

?修改以下參數:

log-queries?
log-facility=/var/log/dnsmasq.log (記錄查詢請求,并通過log-facility指定記錄日志)
no-hosts (直接查詢上游DNS,忽略hosts文件)
domain=dns.test(設置局域網域名)
listen-address=127.0.0.1,10.10.10.1
listen-address=::1,2600::1(監控本機,以及內網IP地址)
address=/dns.test/10.10.10.1?(將域名與IP綁定)
address=/dns.test/2600::1?(將域名與IP綁定)
expand-hosts (刪掉這行前面的#號,即: 取消注釋讓其生效)
server=2400:3200::1
server=114.114.114.114?(因為dnsmasq對應的是國內域名,因此我們采用阿里ipv6DNS,百度ipv4DNS)

conf-dir=/etc/dnsmasq.d
conf-dir=/etc/dnsmasq.d,.bak
conf-dir=/etc/dnsmasq.d/,*.conf (只要保證conf-dir沒有被注釋,/etc/dnsmasq.d這個路徑包含在設置清單內即可)

# Configuration file for dnsmasq. # # Format is one option per line, legal options are the same # as the long options legal on the command line. See # "/usr/sbin/dnsmasq --help" or "man 8 dnsmasq" for details.# Listen on this specific port instead of the standard DNS port # (53). Setting this to zero completely disables DNS function, # leaving only DHCP and/or TFTP. port=53# The following two options make you a better netizen, since they # tell dnsmasq to filter out queries which the public DNS cannot # answer, and which load the servers (especially the root servers) # unnecessarily. If you have a dial-on-demand link they also stop # these requests from bringing up the link unnecessarily.# Never forward plain names (without a dot or domain part) #domain-needed # Never forward addresses in the non-routed address spaces. #bogus-priv# Uncomment these to enable DNSSEC validation and caching: # (Requires dnsmasq to be built with DNSSEC option.) #conf-file=%%PREFIX%%/share/dnsmasq/trust-anchors.conf #dnssec# Replies which are not DNSSEC signed may be legitimate, because the domain # is unsigned, or may be forgeries. Setting this option tells dnsmasq to # check that an unsigned reply is OK, by finding a secure proof that a DS # record somewhere between the root and the domain does not exist. # The cost of setting this is that even queries in unsigned domains will need # one or more extra DNS queries to verify. #dnssec-check-unsigned# Uncomment this to filter useless windows-originated DNS requests # which can trigger dial-on-demand links needlessly. # Note that (amongst other things) this blocks all SRV requests, # so don't use it if you use eg Kerberos, SIP, XMMP or Google-talk. # This option only affects forwarding, SRV records originating for # dnsmasq (via srv-host= lines) are not suppressed by it. #filterwin2k# Change this line if you want dns to get its upstream servers from # somewhere other that /etc/resolv.conf #resolv-file=# By default, dnsmasq will send queries to any of the upstream # servers it knows about and tries to favour servers to are known # to be up. Uncommenting this forces dnsmasq to try each query # with each server strictly in the order they appear in # /etc/resolv.conf #strict-order# If you don't want dnsmasq to read /etc/resolv.conf or any other # file, getting its servers from this file instead (see below), then # uncomment this. #no-resolv# If you don't want dnsmasq to poll /etc/resolv.conf or other resolv # files for changes and re-read them then uncomment this. #no-poll# Add other name servers here, with domain specs if they are for # non-public domains. #server=/localnet/192.168.0.1server=2400:3200::1 server=114.114.114.114# Example of routing PTR queries to nameservers: this will send all # address->name queries for 192.168.3/24 to nameserver 10.1.2.3 #server=/3.168.192.in-addr.arpa/10.1.2.3# Add local-only domains here, queries in these domains are answered # from /etc/hosts or DHCP only. #local=/localnet/# Add domains which you want to force to an IP address here. # The example below send any host in double-click.net to a local # web-server. #address=/double-click.net/127.0.0.1 address=/dns.test/10.10.10.1 address=/dns.test/2600::1# --address (and --server) work with IPv6 addresses too. #address=/www.thekelleys.org.uk/fe80::20d:60ff:fe36:f83# Add the IPs of all queries to yahoo.com, google.com, and their # subdomains to the vpn and search ipsets: #ipset=/yahoo.com/google.com/vpn,search# You can control how dnsmasq talks to a server: this forces # queries to 10.1.2.3 to be routed via eth1 # server=10.1.2.3@eth1# and this sets the source (ie local) address used to talk to # 10.1.2.3 to 192.168.1.1 port 55 (there must be an interface with that # IP on the machine, obviously). # server=10.1.2.3@192.168.1.1#55# If you want dnsmasq to change uid and gid to something other # than the default, edit the following lines. #user= #group=# If you want dnsmasq to listen for DHCP and DNS requests only on # specified interfaces (and the loopback) give the name of the # interface (eg eth0) here. # Repeat the line for more than one interface. #interface= # Or you can specify which interface _not_ to listen on #except-interface= # Or which to listen on by address (remember to include 127.0.0.1 if # you use this.) listen-address=127.0.0.1,10.10.10.1 listen-address=::1,2600::1# If you want dnsmasq to provide only DNS service on an interface, # configure it as shown above, and then use the following line to # disable DHCP and TFTP on it. #no-dhcp-interface=# On systems which support it, dnsmasq binds the wildcard address, # even when it is listening on only some interfaces. It then discards # requests that it shouldn't reply to. This has the advantage of # working even when interfaces come and go and change address. If you # want dnsmasq to really bind only the interfaces it is listening on, # uncomment this option. About the only time you may need this is when # running another nameserver on the same machine. #bind-interfaces# If you don't want dnsmasq to read /etc/hosts, uncomment the # following line. no-hosts# or if you want it to read another file, as well as /etc/hosts, use # this. #addn-hosts=/etc/banner_add_hosts# Set this (and domain: see below) if you want to have a domain # automatically added to simple names in a hosts-file. expand-hosts# Set the domain for dnsmasq. this is optional, but if it is set, it # does the following things. # 1) Allows DHCP hosts to have fully qualified domain names, as long # as the domain part matches this setting. # 2) Sets the "domain" DHCP option thereby potentially setting the # domain of all systems configured by DHCP # 3) Provides the domain part for "expand-hosts" #domain=thekelleys.org.uk domain=dns.test# Set a different domain for a particular subnet #domain=wireless.thekelleys.org.uk,192.168.2.0/24# Same idea, but range rather then subnet #domain=reserved.thekelleys.org.uk,192.68.3.100,192.168.3.200# Uncomment this to enable the integrated DHCP server, you need # to supply the range of addresses available for lease and optionally # a lease time. If you have more than one network, you will need to # repeat this for each network on which you want to supply DHCP # service. #dhcp-range=192.168.0.50,192.168.0.150,12h# This is an example of a DHCP range where the netmask is given. This # is needed for networks we reach the dnsmasq DHCP server via a relay # agent. If you don't know what a DHCP relay agent is, you probably # don't need to worry about this. #dhcp-range=192.168.0.50,192.168.0.150,255.255.255.0,12h# This is an example of a DHCP range which sets a tag, so that # some DHCP options may be set only for this network. #dhcp-range=set:red,192.168.0.50,192.168.0.150# Use this DHCP range only when the tag "green" is set. #dhcp-range=tag:green,192.168.0.50,192.168.0.150,12h# Specify a subnet which can't be used for dynamic address allocation, # is available for hosts with matching --dhcp-host lines. Note that # dhcp-host declarations will be ignored unless there is a dhcp-range # of some type for the subnet in question. # In this case the netmask is implied (it comes from the network # configuration on the machine running dnsmasq) it is possible to give # an explicit netmask instead. #dhcp-range=192.168.0.0,static# Enable DHCPv6. Note that the prefix-length does not need to be specified # and defaults to 64 if missing/ #dhcp-range=1234::2, 1234::500, 64, 12h# Do Router Advertisements, BUT NOT DHCP for this subnet. #dhcp-range=1234::, ra-only# Do Router Advertisements, BUT NOT DHCP for this subnet, also try and # add names to the DNS for the IPv6 address of SLAAC-configured dual-stack # hosts. Use the DHCPv4 lease to derive the name, network segment and # MAC address and assume that the host will also have an # IPv6 address calculated using the SLAAC algorithm. #dhcp-range=1234::, ra-names# Do Router Advertisements, BUT NOT DHCP for this subnet. # Set the lifetime to 46 hours. (Note: minimum lifetime is 2 hours.) #dhcp-range=1234::, ra-only, 48h# Do DHCP and Router Advertisements for this subnet. Set the A bit in the RA # so that clients can use SLAAC addresses as well as DHCP ones. #dhcp-range=1234::2, 1234::500, slaac# Do Router Advertisements and stateless DHCP for this subnet. Clients will # not get addresses from DHCP, but they will get other configuration information. # They will use SLAAC for addresses. #dhcp-range=1234::, ra-stateless# Do stateless DHCP, SLAAC, and generate DNS names for SLAAC addresses # from DHCPv4 leases. #dhcp-range=1234::, ra-stateless, ra-names# Do router advertisements for all subnets where we're doing DHCPv6 # Unless overridden by ra-stateless, ra-names, et al, the router # advertisements will have the M and O bits set, so that the clients # get addresses and configuration from DHCPv6, and the A bit reset, so the # clients don't use SLAAC addresses. #enable-ra# Supply parameters for specified hosts using DHCP. There are lots # of valid alternatives, so we will give examples of each. Note that # IP addresses DO NOT have to be in the range given above, they just # need to be on the same network. The order of the parameters in these # do not matter, it's permissible to give name, address and MAC in any # order.# Always allocate the host with Ethernet address 11:22:33:44:55:66 # The IP address 192.168.0.60 #dhcp-host=11:22:33:44:55:66,192.168.0.60# Always set the name of the host with hardware address # 11:22:33:44:55:66 to be "fred" #dhcp-host=11:22:33:44:55:66,fred# Always give the host with Ethernet address 11:22:33:44:55:66 # the name fred and IP address 192.168.0.60 and lease time 45 minutes #dhcp-host=11:22:33:44:55:66,fred,192.168.0.60,45m# Give a host with Ethernet address 11:22:33:44:55:66 or # 12:34:56:78:90:12 the IP address 192.168.0.60. Dnsmasq will assume # that these two Ethernet interfaces will never be in use at the same # time, and give the IP address to the second, even if it is already # in use by the first. Useful for laptops with wired and wireless # addresses. #dhcp-host=11:22:33:44:55:66,12:34:56:78:90:12,192.168.0.60# Give the machine which says its name is "bert" IP address # 192.168.0.70 and an infinite lease #dhcp-host=bert,192.168.0.70,infinite# Always give the host with client identifier 01:02:02:04 # the IP address 192.168.0.60 #dhcp-host=id:01:02:02:04,192.168.0.60# Always give the InfiniBand interface with hardware address # 80:00:00:48:fe:80:00:00:00:00:00:00:f4:52:14:03:00:28:05:81 the # ip address 192.168.0.61. The client id is derived from the prefix # ff:00:00:00:00:00:02:00:00:02:c9:00 and the last 8 pairs of # hex digits of the hardware address. #dhcp-host=id:ff:00:00:00:00:00:02:00:00:02:c9:00:f4:52:14:03:00:28:05:81,192.168.0.61# Always give the host with client identifier "marjorie" # the IP address 192.168.0.60 #dhcp-host=id:marjorie,192.168.0.60# Enable the address given for "judge" in /etc/hosts # to be given to a machine presenting the name "judge" when # it asks for a DHCP lease. #dhcp-host=judge# Never offer DHCP service to a machine whose Ethernet # address is 11:22:33:44:55:66 #dhcp-host=11:22:33:44:55:66,ignore# Ignore any client-id presented by the machine with Ethernet # address 11:22:33:44:55:66. This is useful to prevent a machine # being treated differently when running under different OS's or # between PXE boot and OS boot. #dhcp-host=11:22:33:44:55:66,id:*# Send extra options which are tagged as "red" to # the machine with Ethernet address 11:22:33:44:55:66 #dhcp-host=11:22:33:44:55:66,set:red# Send extra options which are tagged as "red" to # any machine with Ethernet address starting 11:22:33: #dhcp-host=11:22:33:*:*:*,set:red# Give a fixed IPv6 address and name to client with # DUID 00:01:00:01:16:d2:83:fc:92:d4:19:e2:d8:b2 # Note the MAC addresses CANNOT be used to identify DHCPv6 clients. # Note also that the [] around the IPv6 address are obligatory. #dhcp-host=id:00:01:00:01:16:d2:83:fc:92:d4:19:e2:d8:b2, fred, [1234::5]# Ignore any clients which are not specified in dhcp-host lines # or /etc/ethers. Equivalent to ISC "deny unknown-clients". # This relies on the special "known" tag which is set when # a host is matched. #dhcp-ignore=tag:!known# Send extra options which are tagged as "red" to any machine whose # DHCP vendorclass string includes the substring "Linux" #dhcp-vendorclass=set:red,Linux# Send extra options which are tagged as "red" to any machine one # of whose DHCP userclass strings includes the substring "accounts" #dhcp-userclass=set:red,accounts# Send extra options which are tagged as "red" to any machine whose # MAC address matches the pattern. #dhcp-mac=set:red,00:60:8C:*:*:*# If this line is uncommented, dnsmasq will read /etc/ethers and act # on the ethernet-address/IP pairs found there just as if they had # been given as --dhcp-host options. Useful if you keep # MAC-address/host mappings there for other purposes. #read-ethers# Send options to hosts which ask for a DHCP lease. # See RFC 2132 for details of available options. # Common options can be given to dnsmasq by name: # run "dnsmasq --help dhcp" to get a list. # Note that all the common settings, such as netmask and # broadcast address, DNS server and default route, are given # sane defaults by dnsmasq. You very likely will not need # any dhcp-options. If you use Windows clients and Samba, there # are some options which are recommended, they are detailed at the # end of this section.# Override the default route supplied by dnsmasq, which assumes the # router is the same machine as the one running dnsmasq. #dhcp-option=3,1.2.3.4# Do the same thing, but using the option name #dhcp-option=option:router,1.2.3.4# Override the default route supplied by dnsmasq and send no default # route at all. Note that this only works for the options sent by # default (1, 3, 6, 12, 28) the same line will send a zero-length option # for all other option numbers. #dhcp-option=3# Set the NTP time server addresses to 192.168.0.4 and 10.10.0.5 #dhcp-option=option:ntp-server,192.168.0.4,10.10.0.5# Send DHCPv6 option. Note [] around IPv6 addresses. #dhcp-option=option6:dns-server,[1234::77],[1234::88]# Send DHCPv6 option for namservers as the machine running # dnsmasq and another. #dhcp-option=option6:dns-server,[::],[1234::88]# Ask client to poll for option changes every six hours. (RFC4242) #dhcp-option=option6:information-refresh-time,6h# Set option 58 client renewal time (T1). Defaults to half of the # lease time if not specified. (RFC2132) #dhcp-option=option:T1,1m# Set option 59 rebinding time (T2). Defaults to 7/8 of the # lease time if not specified. (RFC2132) #dhcp-option=option:T2,2m# Set the NTP time server address to be the same machine as # is running dnsmasq #dhcp-option=42,0.0.0.0# Set the NIS domain name to "welly" #dhcp-option=40,welly# Set the default time-to-live to 50 #dhcp-option=23,50# Set the "all subnets are local" flag #dhcp-option=27,1# Send the etherboot magic flag and then etherboot options (a string). #dhcp-option=128,e4:45:74:68:00:00 #dhcp-option=129,NIC=eepro100# Specify an option which will only be sent to the "red" network # (see dhcp-range for the declaration of the "red" network) # Note that the tag: part must precede the option: part. #dhcp-option = tag:red, option:ntp-server, 192.168.1.1# The following DHCP options set up dnsmasq in the same way as is specified # for the ISC dhcpcd in # http://www.samba.org/samba/ftp/docs/textdocs/DHCP-Server-Configuration.txt # adapted for a typical dnsmasq installation where the host running # dnsmasq is also the host running samba. # you may want to uncomment some or all of them if you use # Windows clients and Samba. #dhcp-option=19,0 # option ip-forwarding off #dhcp-option=44,0.0.0.0 # set netbios-over-TCP/IP nameserver(s) aka WINS server(s) #dhcp-option=45,0.0.0.0 # netbios datagram distribution server #dhcp-option=46,8 # netbios node type# Send an empty WPAD option. This may be REQUIRED to get windows 7 to behave. #dhcp-option=252,"\n"# Send RFC-3397 DNS domain search DHCP option. WARNING: Your DHCP client # probably doesn't support this...... #dhcp-option=option:domain-search,eng.apple.com,marketing.apple.com# Send RFC-3442 classless static routes (note the netmask encoding) #dhcp-option=121,192.168.1.0/24,1.2.3.4,10.0.0.0/8,5.6.7.8# Send vendor-class specific options encapsulated in DHCP option 43. # The meaning of the options is defined by the vendor-class so # options are sent only when the client supplied vendor class # matches the class given here. (A substring match is OK, so "MSFT" # matches "MSFT" and "MSFT 5.0"). This example sets the # mtftp address to 0.0.0.0 for PXEClients. #dhcp-option=vendor:PXEClient,1,0.0.0.0# Send microsoft-specific option to tell windows to release the DHCP lease # when it shuts down. Note the "i" flag, to tell dnsmasq to send the # value as a four-byte integer - that's what microsoft wants. See # http://technet2.microsoft.com/WindowsServer/en/library/a70f1bb7-d2d4-49f0-96d6-4b7414ecfaae1033.mspx?mfr=true #dhcp-option=vendor:MSFT,2,1i# Send the Encapsulated-vendor-class ID needed by some configurations of # Etherboot to allow is to recognise the DHCP server. #dhcp-option=vendor:Etherboot,60,"Etherboot"# Send options to PXELinux. Note that we need to send the options even # though they don't appear in the parameter request list, so we need # to use dhcp-option-force here. # See http://syslinux.zytor.com/pxe.php#special for details. # Magic number - needed before anything else is recognised #dhcp-option-force=208,f1:00:74:7e # Configuration file name #dhcp-option-force=209,configs/common # Path prefix #dhcp-option-force=210,/tftpboot/pxelinux/files/ # Reboot time. (Note 'i' to send 32-bit value) #dhcp-option-force=211,30i# Set the boot filename for netboot/PXE. You will only need # this if you want to boot machines over the network and you will need # a TFTP server; either dnsmasq's built-in TFTP server or an # external one. (See below for how to enable the TFTP server.) #dhcp-boot=pxelinux.0# The same as above, but use custom tftp-server instead machine running dnsmasq #dhcp-boot=pxelinux,server.name,192.168.1.100# Boot for iPXE. The idea is to send two different # filenames, the first loads iPXE, and the second tells iPXE what to # load. The dhcp-match sets the ipxe tag for requests from iPXE. #dhcp-boot=undionly.kpxe #dhcp-match=set:ipxe,175 # iPXE sends a 175 option. #dhcp-boot=tag:ipxe,http://boot.ipxe.org/demo/boot.php# Encapsulated options for iPXE. All the options are # encapsulated within option 175 #dhcp-option=encap:175, 1, 5b # priority code #dhcp-option=encap:175, 176, 1b # no-proxydhcp #dhcp-option=encap:175, 177, string # bus-id #dhcp-option=encap:175, 189, 1b # BIOS drive code #dhcp-option=encap:175, 190, user # iSCSI username #dhcp-option=encap:175, 191, pass # iSCSI password# Test for the architecture of a netboot client. PXE clients are # supposed to send their architecture as option 93. (See RFC 4578) #dhcp-match=peecees, option:client-arch, 0 #x86-32 #dhcp-match=itanics, option:client-arch, 2 #IA64 #dhcp-match=hammers, option:client-arch, 6 #x86-64 #dhcp-match=mactels, option:client-arch, 7 #EFI x86-64# Do real PXE, rather than just booting a single file, this is an # alternative to dhcp-boot. #pxe-prompt="What system shall I netboot?" # or with timeout before first available action is taken: #pxe-prompt="Press F8 for menu.", 60# Available boot services. for PXE. #pxe-service=x86PC, "Boot from local disk"# Loads <tftp-root>/pxelinux.0 from dnsmasq TFTP server. #pxe-service=x86PC, "Install Linux", pxelinux# Loads <tftp-root>/pxelinux.0 from TFTP server at 1.2.3.4. # Beware this fails on old PXE ROMS. #pxe-service=x86PC, "Install Linux", pxelinux, 1.2.3.4# Use bootserver on network, found my multicast or broadcast. #pxe-service=x86PC, "Install windows from RIS server", 1# Use bootserver at a known IP address. #pxe-service=x86PC, "Install windows from RIS server", 1, 1.2.3.4# If you have multicast-FTP available, # information for that can be passed in a similar way using options 1 # to 5. See page 19 of # http://download.intel.com/design/archives/wfm/downloads/pxespec.pdf# Enable dnsmasq's built-in TFTP server #enable-tftp# Set the root directory for files available via FTP. #tftp-root=/var/ftpd# Do not abort if the tftp-root is unavailable #tftp-no-fail# Make the TFTP server more secure: with this set, only files owned by # the user dnsmasq is running as will be send over the net. #tftp-secure# This option stops dnsmasq from negotiating a larger blocksize for TFTP # transfers. It will slow things down, but may rescue some broken TFTP # clients. #tftp-no-blocksize# Set the boot file name only when the "red" tag is set. #dhcp-boot=tag:red,pxelinux.red-net# An example of dhcp-boot with an external TFTP server: the name and IP # address of the server are given after the filename. # Can fail with old PXE ROMS. Overridden by --pxe-service. #dhcp-boot=/var/ftpd/pxelinux.0,boothost,192.168.0.3# If there are multiple external tftp servers having a same name # (using /etc/hosts) then that name can be specified as the # tftp_servername (the third option to dhcp-boot) and in that # case dnsmasq resolves this name and returns the resultant IP # addresses in round robin fashion. This facility can be used to # load balance the tftp load among a set of servers. #dhcp-boot=/var/ftpd/pxelinux.0,boothost,tftp_server_name# Set the limit on DHCP leases, the default is 150 #dhcp-lease-max=150# The DHCP server needs somewhere on disk to keep its lease database. # This defaults to a sane location, but if you want to change it, use # the line below. #dhcp-leasefile=/var/lib/misc/dnsmasq.leases# Set the DHCP server to authoritative mode. In this mode it will barge in # and take over the lease for any client which broadcasts on the network, # whether it has a record of the lease or not. This avoids long timeouts # when a machine wakes up on a new network. DO NOT enable this if there's # the slightest chance that you might end up accidentally configuring a DHCP # server for your campus/company accidentally. The ISC server uses # the same option, and this URL provides more information: # http://www.isc.org/files/auth.html #dhcp-authoritative# Set the DHCP server to enable DHCPv4 Rapid Commit Option per RFC 4039. # In this mode it will respond to a DHCPDISCOVER message including a Rapid Commit # option with a DHCPACK including a Rapid Commit option and fully committed address # and configuration information. This must only be enabled if either the server is # the only server for the subnet, or multiple servers are present and they each # commit a binding for all clients. #dhcp-rapid-commit# Run an executable when a DHCP lease is created or destroyed. # The arguments sent to the script are "add" or "del", # then the MAC address, the IP address and finally the hostname # if there is one. #dhcp-script=/bin/echo# Set the cachesize here. #cache-size=150# If you want to disable negative caching, uncomment this. #no-negcache# Normally responses which come from /etc/hosts and the DHCP lease # file have Time-To-Live set as zero, which conventionally means # do not cache further. If you are happy to trade lower load on the # server for potentially stale date, you can set a time-to-live (in # seconds) here. #local-ttl=# If you want dnsmasq to detect attempts by Verisign to send queries # to unregistered .com and .net hosts to its sitefinder service and # have dnsmasq instead return the correct NXDOMAIN response, uncomment # this line. You can add similar lines to do the same for other # registries which have implemented wildcard A records. #bogus-nxdomain=64.94.110.11# If you want to fix up DNS results from upstream servers, use the # alias option. This only works for IPv4. # This alias makes a result of 1.2.3.4 appear as 5.6.7.8 #alias=1.2.3.4,5.6.7.8 # and this maps 1.2.3.x to 5.6.7.x #alias=1.2.3.0,5.6.7.0,255.255.255.0 # and this maps 192.168.0.10->192.168.0.40 to 10.0.0.10->10.0.0.40 #alias=192.168.0.10-192.168.0.40,10.0.0.0,255.255.255.0# Change these lines if you want dnsmasq to serve MX records.# Return an MX record named "maildomain.com" with target # servermachine.com and preference 50 #mx-host=maildomain.com,servermachine.com,50# Set the default target for MX records created using the localmx option. #mx-target=servermachine.com# Return an MX record pointing to the mx-target for all local # machines. #localmx# Return an MX record pointing to itself for all local machines. #selfmx# Change the following lines if you want dnsmasq to serve SRV # records. These are useful if you want to serve ldap requests for # Active Directory and other windows-originated DNS requests. # See RFC 2782. # You may add multiple srv-host lines. # The fields are <name>,<target>,<port>,<priority>,<weight> # If the domain part if missing from the name (so that is just has the # service and protocol sections) then the domain given by the domain= # config option is used. (Note that expand-hosts does not need to be # set for this to work.)# A SRV record sending LDAP for the example.com domain to # ldapserver.example.com port 389 #srv-host=_ldap._tcp.example.com,ldapserver.example.com,389# A SRV record sending LDAP for the example.com domain to # ldapserver.example.com port 389 (using domain=) #domain=example.com #srv-host=_ldap._tcp,ldapserver.example.com,389# Two SRV records for LDAP, each with different priorities #srv-host=_ldap._tcp.example.com,ldapserver.example.com,389,1 #srv-host=_ldap._tcp.example.com,ldapserver.example.com,389,2# A SRV record indicating that there is no LDAP server for the domain # example.com #srv-host=_ldap._tcp.example.com# The following line shows how to make dnsmasq serve an arbitrary PTR # record. This is useful for DNS-SD. (Note that the # domain-name expansion done for SRV records _does_not # occur for PTR records.) #ptr-record=_http._tcp.dns-sd-services,"New Employee Page._http._tcp.dns-sd-services"# Change the following lines to enable dnsmasq to serve TXT records. # These are used for things like SPF and zeroconf. (Note that the # domain-name expansion done for SRV records _does_not # occur for TXT records.)#Example SPF. #txt-record=example.com,"v=spf1 a -all"#Example zeroconf #txt-record=_http._tcp.example.com,name=value,paper=A4# Provide an alias for a "local" DNS name. Note that this _only_ works # for targets which are names from DHCP or /etc/hosts. Give host # "bert" another name, bertrand #cname=bertand,bert# For debugging purposes, log each DNS query as it passes through # dnsmasq. log-queries log-facility=var/log/dnsmasq.log# Log lots of extra information about DHCP transactions. #log-dhcp# Include another lot of configuration options. #conf-file=/etc/dnsmasq.more.conf conf-dir=/etc/dnsmasq.d# Include all the files in a directory except those ending in .bak conf-dir=/etc/dnsmasq.d,.bak# Include all files in a directory which end in .conf conf-dir=/etc/dnsmasq.d/,*.conf# If a DHCP client claims that its name is "wpad", ignore that. # This fixes a security hole. see CERT Vulnerability VU#598349 #dhcp-name-match=set:wpad-ignore,wpad #dhcp-ignore-names=tag:wpad-ignore

保存之后通過dnsmasq --test檢查語法是否有問題,如果沒有問題則啟動dnsmasq

systemctl start dnsmasq systemctl enable dnsmasq

?3.設置dnsmasq和本機dns的關聯

修改/etc/resolv.conf

nameserver 127.0.0.1 nameserver ::1

修改etc/hosts文件

127.0.0.1 dnsmasq ::1 dnsmasq

4.配置gfwlist

? ? ? gfwlist是一個公益項目,它把被GFW屏蔽的網站做了一個匯總,并以文件的方式提供給大家,項目地址:https://github.com/gfwlist/gfwlist

? ? ? ?gfwlist下載下來的文本格式不是dnsmasq能使用的格式,因此需要將其轉化為能識別的文件,可以通過python程序將原始gfwlist文件轉換為dnsmasq能讀懂的格式。

vi dns-gfwlist.py #!/usr/bin/env python #coding=utf-8 # # Generate a list of dnsmasq rules with ipset for gfwlist # # Copyright (C) 2014 http://www.shuyz.com # Ref https://code.google.com/p/autoproxy-gfwlist/wiki/Rulesimport urllib2 import re import os import datetime import base64 import shutilmydnsip = '8.8.8.8' mydnsipv6 = '2001:4860:4860::8888' mydnsport = '53'# the url of gfwlist baseurl = 'https://raw.githubusercontent.com/gfwlist/gfwlist/master/gfwlist.txt' # match comments/title/whitelist/ip address comment_pattern = '^\!|\[|^@@|^\d+\.\d+\.\d+\.\d+' domain_pattern = '([\w\-\_]+\.[\w\.\-\_]+)[\/\*]*' tmpfile = '/tmp/gfwlisttmp' # do not write to router internal flash directly outfile = '/tmp/gfwlist.conf' rulesfile = '/etc/dnsmasq.d/gfwlist.conf'fs = file(outfile, 'w') fs.write('# gfw list ipset rules for dnsmasq\n') fs.write('# updated on ' + datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S") + '\n') fs.write('#\n')print 'fetching list...' content = urllib2.urlopen(baseurl, timeout=15).read().decode('base64')# write the decoded content to file then read line by line tfs = open(tmpfile, 'w') tfs.write(content) tfs.close() tfs = open(tmpfile, 'r')print 'page content fetched, analysis...'# remember all blocked domains, in case of duplicate records domainlist = []for line in tfs.readlines():if re.findall(comment_pattern, line):print 'this is a comment line: ' + line#fs.write('#' + line)else:domain = re.findall(domain_pattern, line)if domain:try:found = domainlist.index(domain[0])print domain[0] + ' exists.'except ValueError:print 'saving ' + domain[0]domainlist.append(domain[0])fs.write('server=/.%s/%s#%s\n'%(domain[0],mydnsip,mydnsport))fs.write('server=/.%s/%s#%s\n'%(domain[0],mydnsipv6,mydnsport))else:print 'no valid domain in this line: ' + linetfs.close() fs.close();print 'moving generated file to dnsmasg directory' shutil.move(outfile, rulesfile)print 'restart dnsmasq...' print os.popen('/etc/init.d/dnsmasq restart').read()print 'done!'

執行python程序

apt install python2.7 python2.7 dns-gfwlist.py

?檢查/etc/dnsmasq.d/gfwlist.conf文件

如果有一大堆的

server=/.phobos.apple.com/8.8.8.8#53
server=/.phobos.apple.com/2001:4860:4860::8888#53

表示文件沒有問題,系統搭建成功

三、系統測試

測試國內的域名

nslookup qq.com

查看/var/log/dnsmasq.log發現的是國內的dns解析

Nov 22 16:27:24 dnsmasq[23591]: query[A] qq.com from 127.0.0.1
Nov 22 16:27:24 dnsmasq[23591]: forwarded qq.com to 114.114.114.114
Nov 22 16:27:25 dnsmasq[23591]: query[A] qq.com from ::1
Nov 22 16:27:25 dnsmasq[23591]: forwarded qq.com to 114.114.114.114
Nov 22 16:27:30 dnsmasq[23591]: query[A] qq.com from 127.0.0.1
Nov 22 16:27:30 dnsmasq[23591]: forwarded qq.com to 114.114.114.114
Nov 22 16:27:31 dnsmasq[23591]: query[A] qq.com from ::1
Nov 22 16:27:31 dnsmasq[23591]: forwarded qq.com to 114.114.114.114
Nov 22 16:27:36 dnsmasq[23591]: query[A] qq.com from 127.0.0.1
Nov 22 16:27:36 dnsmasq[23591]: forwarded qq.com to 114.114.114.114
Nov 22 16:27:37 dnsmasq[23591]: query[A] qq.com from ::1
Nov 22 16:27:37 dnsmasq[23591]: forwarded qq.com to 114.114.114.114

測試國外的域名

nslookup google.com

查看log走的是國外的dns解析

Nov 22 16:31:43 dnsmasq[23591]: query[A] google.com from 127.0.0.1
Nov 22 16:31:43 dnsmasq[23591]: forwarded google.com to 8.8.8.8
Nov 22 16:31:43 dnsmasq[23591]: forwarded google.com to 2001:4860:4860::8888
Nov 22 16:31:43 dnsmasq[23591]: forwarded google.com to 8.8.8.8
Nov 22 16:31:43 dnsmasq[23591]: forwarded google.com to 127.0.0.1
Nov 22 16:31:43 dnsmasq[23591]: ipset add gfwlist 142.251.32.110 google.com
Nov 22 16:31:43 dnsmasq[23591]: reply google.com is 142.251.32.110
Nov 22 16:31:43 dnsmasq[23591]: query[AAAA] google.com from 127.0.0.1
Nov 22 16:31:43 dnsmasq[23591]: forwarded google.com to 8.8.8.8
Nov 22 16:31:43 dnsmasq[23591]: forwarded google.com to 2001:4860:4860::8888
Nov 22 16:31:43 dnsmasq[23591]: forwarded google.com to 8.8.8.8
Nov 22 16:31:43 dnsmasq[23591]: forwarded google.com to 127.0.0.1
Nov 22 16:31:43 dnsmasq[23591]: ipset add gfwlist 2607:f8b0:4006:81d::200e google.com
Nov 22 16:31:43 dnsmasq[23591]: reply google.com is 2607:f8b0:4006:81d::200e

結果顯示分流成功,此系統搭建完成?

總結

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