DNSCrypt似乎不加密查询

Question

我正在尝试在Raspberry上安装一个DNS缓存服务器，使用Unbound和DNSCrypt。

Raspberry运行最新的Jessie Lite (无头Debian 8)。

我使用以下流行脚本设置DNSCrypt：https://github.com/simonclausen/dnscrypt-autoinstall

Unbound和DNSCrypt都运行良好:我的主计算机(192.168.1.64)成功地使用了Raspberry上的DNS服务器(192.168.1.65)，我可以通过日志文件看到使用DNSCrypt的Unbound。

我的问题是，当我dig一个网站并通过Wireshark捕获时，我没有看到任何加密，只是返回标准查询。

我遗漏了什么？

下面是dig的响应：

$ dig  debug.opendns.com  txt

; <<>> DiG 9.9.5-9+deb8u8-Raspbian <<>> debug.opendns.com txt
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 17686
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; ENDS: version: 0, flags:; upd: 4096
;; QUESTION SECTION:
;debug.opendns.com.             IN      TXT

;; AUTHORITY SECTION:
opendns.com.            2560    IN      SOA     auth1.opendns.com. noc.opendns.com. 1483610050 16384 2048 1048576 2560

;; Query time: 143 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Thu Jan 05 11:02:24 CET 2017
;; MSG SIZE  rcvd: 92

下面是Wireshark截图中的截图：

这是未绑定的日志：

[1483616499] unbound[5098:0] debug: module config: "iterator"
[1483616499] unbound[5098:0] notice: init module 0: iterator
[1483616499] unbound[5098:0] debug: target fetch policy for level 0 is 3
[1483616499] unbound[5098:0] debug: target fetch policy for level 1 is 2
[1483616499] unbound[5098:0] debug: target fetch policy for level 2 is 1
[1483616499] unbound[5098:0] debug: target fetch policy for level 3 is 0
[1483616499] unbound[5098:0] debug: target fetch policy for level 4 is 0
[1483616499] unbound[5098:0] debug: Forward zone server list:
[1483616499] unbound[5098:0] info: DelegationPoint<.>: 0 names (0 missing), 1 addrs (0 result, 1 avail) parentNS
[1483616499] unbound[5098:0] debug: cache memory msg=33040 rrset=33040 infra=1304 val=0
[1483616499] unbound[5098:0] info: start of service (unbound 1.4.22).
[1483616505] unbound[5098:0] debug: iterator[module 0] operate: extstate:module_state_initial event:module_event_new
[1483616505] unbound[5098:0] info: resolving www.google.com. A IN
[1483616505] unbound[5098:0] info: processQueryTargets: www.google.com. A IN
[1483616505] unbound[5098:0] info: sending query: www.google.com. A IN
[1483616505] unbound[5098:0] debug: sending to target: <.> 127.0.0.1#40
[1483616505] unbound[5098:0] debug: cache memory msg=33040 rrset=33040 infra=1533 val=0
[1483616505] unbound[5098:0] debug: iterator[module 0] operate: extstate:module_wait_reply event:module_event_reply
[1483616505] unbound[5098:0] info: iterator operate: query www.google.com. A IN
[1483616505] unbound[5098:0] info: response for www.google.com. A IN
[1483616505] unbound[5098:0] info: reply from <.> 127.0.0.1#40
[1483616505] unbound[5098:0] info: query response was ANSWER
[1483616505] unbound[5098:0] info: finishing processing for www.google.com. A IN

以下是未绑定的配置文件：

server:
        auto-trust-anchor-file: "/var/lib/unbound/root.key"

server:
        username: unbound
        port: 53
        logfile: "/var/log/unbound/unbound.log"
        log-time-ascii: no
        use-syslog: no
        verbosity: 3
        module-config: "iterator"
        do-not-query-localhost: no
        interface: 0.0.0.0
        access-control: 127.0.0.1 allow
        access-control: 192.168.1.0/24 allow
        access-control: 10.8.0.0/24 allow

forward-zone:
        name: "."
        forward-addr: 127.0.0.1@40
        forward-first: no

remote-control:
        control-enable: no

下面是脚本生成的DNSCrypt的配置：

DNSCRYPT_LOCALIP=127.0.0.1
DNSCRYPT_LOCALPORT=40
DNSCRYPT_USER=dnscrypt
DNSCRYPT_RESOLVER=ns0.dnscrypt.is

Answer 1

Wireshark捕获显示源和目的地都是本地IP地址。

因此，这只是记录您的计算机和Raspberry Pi之间的流量。这是正常的DNS流量。加密的流量在Raspberry和ns0.dnscrypt.is解析器之间，即互联网上的内容。

这是你应该做包捕获的地方。

或者，如果您希望验证计算机与Raspberry Pi之间的通信量，则客户端代理需要在您的计算机上运行，而在Raspberry上则需要运行一个DNSCrypt服务器(dnscrypt包装器或dnsdist)。