86

我想使用客户端证书对每个目录身份验证进行故障排除。我特别想找出服务器发送哪些可接受的客户端证书。

如何调试 SSL 握手，最好使用 cURL？

4

7 回答 7

90

I have used this command to troubleshoot client certificate negotiation:

openssl s_client -connect www.test.com:443 -prexit

The output will probably contain "Acceptable client certificate CA names" and a list of CA certificates from the server, or possibly "No client certificate CA names sent", if the server doesn't always require client certificates.

于 2014-04-02T14:30:13.910 回答
43 
curl -iv https://your.domain.io

如果您不想使用 openssl 命令，这将为您提供证书和标头输出。

于 2015-07-06T20:33:50.077 回答
9

curl 可能确实有一些选项可以显示更多信息，但对于这样的事情，我总是使用openssl s_client

使用该-debug选项可以提供许多有用的信息

也许我应该补充一点，这也适用于非 HTTP 连接。因此，如果您正在执行“https”，请尝试下面建议的 curl 命令。如果您不是或想要第二个选择openssl s_client可能会很好

于 2013-07-19T09:03:49.040 回答
8
  1. 对于 TLS 握手故障排除，请使用openssl s_client而不是curl.
  2. -msg成功了！
  3. -debug有助于查看实际通过插座的内容。
  4. -statusOCSP 装订现在应该是标准的。
openssl s_client -connect example.com:443 -tls1_2 -status -msg -debug -CAfile <path to trusted root ca pem> -key <path to client private key pem> -cert <path to client cert pem>

其他有用的开关 -tlsextdebug -prexit -state

https://www.openssl.org/docs/man1.0.2/man1/s_client.html

于 2019-12-05T19:21:58.187 回答
5

curl有一个--trace(and --trace-ascii) 选项，它基本上打印所有内容，包括所有 SSL/TSL 握手。由于--trace取代了其他详细程度选项，您所需要的只是

curl --trace /path/to/trace.log https://example.com

然后，您可以阅读 ietf 以将日志中的消息与标准中的相应消息相匹配 - 例如TLS v1.2、TLS v1.3， curl 甚至打印来自标准的相应消息编号，例如：

== Info: TLSv1.3 (OUT), TLS handshake, Client hello (1):

其中(1)是消息编号。

--trace-ascii就像--trace但不打印二进制数据一样工作。

于 2021-05-07T13:11:58.587 回答
3

实际上openssl，命令是比curl检查和调试 SSL 更好的工具。这是一个例子openssl：

openssl s_client -showcerts -connect stackoverflow.com:443 < /dev/null

并且< /dev/null用于将 EOL 添加到STDIN否则它会挂在Terminal上。

但是如果你喜欢，你可以用（就像我用curlyopenssl做的那样）包装一些有用的命令，让它更易于阅读，如下所示：curl

# check if SSL is valid
>>> curly --ssl valid -d stackoverflow.com
Verify return code: 0 (ok)
issuer=C = US
O = Let's Encrypt
CN = R3
subject=CN = *.stackexchange.com

option: ssl
action: valid
status: OK

# check how many days it will be valid 
>>> curly --ssl date -d stackoverflow.com
Verify return code: 0 (ok)
from: Tue Feb  9 16:13:16 UTC 2021
till: Mon May 10 16:13:16 UTC 2021
days total:  89
days passed: 8
days left:   81

option: ssl
action: date
status: OK

# check which names it supports
curly --ssl name -d stackoverflow.com
*.askubuntu.com
*.blogoverflow.com
*.mathoverflow.net
*.meta.stackexchange.com
*.meta.stackoverflow.com
*.serverfault.com
*.sstatic.net
*.stackexchange.com
*.stackoverflow.com
*.stackoverflow.email
*.superuser.com
askubuntu.com
blogoverflow.com
mathoverflow.net
openid.stackauth.com
serverfault.com
sstatic.net
stackapps.com
stackauth.com
stackexchange.com
stackoverflow.blog
stackoverflow.com
stackoverflow.email
stacksnippets.net
superuser.com

option: ssl
action: name
status: OK

# check the CERT of the SSL
>>> curly --ssl cert -d stackoverflow.com
-----BEGIN CERTIFICATE-----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WFbLrlAJQOYfr52LFMLGMFUGCCsGAQUFBwEBBEkwRzAhBggrBgEFBQcwAYYVaHR0
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dGFja292ZXJmbG93LmNvbYIVKi5zdGFja292ZXJmbG93LmVtYWlsgg8qLnN1cGVy
dXNlci5jb22CDWFza3VidW50dS5jb22CEGJsb2dvdmVyZmxvdy5jb22CEG1hdGhv
dmVyZmxvdy5uZXSCFG9wZW5pZC5zdGFja2F1dGguY29tgg9zZXJ2ZXJmYXVsdC5j
b22CC3NzdGF0aWMubmV0gg1zdGFja2FwcHMuY29tgg1zdGFja2F1dGguY29tghFz
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bG93LmNvbYITc3RhY2tvdmVyZmxvdy5lbWFpbIIRc3RhY2tzbmlwcGV0cy5uZXSC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-----END CERTIFICATE-----

option: ssl
action: cert
status: OK
于 2021-02-18T10:30:12.183 回答
-2 
openssl s_client -connect 127.0.0.1:6379 -state
CONNECTED(00000003)
SSL_connect:before SSL initialization
SSL_connect:SSLv3/TLS write client hello
于 2021-01-26T19:38:27.700 回答