Curl check SSL certificate

Now we see a list of revoked certificates. IMHO, using curl is not enough, another program is required to check certificates. By doing a simple. strace curl https://www.google.com -v we see that curl is not checking revocations (not even connecting to the relevant places). It just say In the most simple form we pass the SSL certificate and private key via arguments on the command line. If there is a password associated with the cert you can append it to the cert name separated by a colon or else the curl command will prompt you for the password once the command is run 1. Here is my replacement batch file, using openssl instead of curl: @echo off nslookup %1 (openssl s_client -showcerts -servername %1 -connect %1:443 <nul |openssl x509 -text |findstr /I DNS After) 2>nul. This gives me this output (TLS) By default, every SSL connection curl makes is verified to be secure. This option allows curl to proceed and operate even for server connections otherwise considered insecure. The server connection is verified by making sure the server's certificate contains the right name and verifies successfully using the cert store curl by default will verify each SSL connection to be secure on every connection. You'll get the following SSL verification error when running cURL against https -based websites with the SSL certificates that are either misconfigured, expired, or self-signed

linux - how to use curl to verify if a site's certificate

• al. As an example, we will try to access https://www.wikipedia.com and we will get an error lik
• The -p 443 specifies to scan port 443 only. All ports will be scanned if it is omitted, and the certificate details for any SSL service that is found will be displayed. The --script ssl-cert tells the Nmap scripting engine to run only the ssl-cert script. From the doc, this script (r)etrieves a server's SSL certificate
• You need to pass the -k or --insecure option to the curl command. This option explicitly allows curl to perform insecure SSL connections and transfers. All SSL connections are attempted to be made secure by using the CA certificate bundle installed by default. Does curl have a -no-check-certificate option like wget command on Linux
• Can a wget like application check the SSL fingerprint? wget does not have such a functionality. Using wget --ca-certificate or curl --cacert I would have to run my own local certificate authority, which I'd like to prevent, because that adds a lot complexity. It's also ultra difficult and no one did that ever before. Isn't there any tool, like download --tlsv1 --serial-number xx:yy:zz.

12. Mai 2020. Keine Kommentare. zu Check SSL certificate expiry with PHP and curl. Today I wanted to create a simple way to check the expiry date of my SSL certificates to avoid getting hit by unexpected error messages in the browser (although I'm using Lets Encrypt auto-renew features, I sometimes get a container with an expired certificate) If this HTTPS server uses a certificate signed by a CA represented in the bundle, the certificate verification probably failed due to a problem with the certificate (it might be expired, or the name might not match the domain name in the URL). If you'd like to turn off curl's verification of the certificate, use the -k (or --insecure) option The basic syntax for ignoring certificate errors with the curl command is: curl --insecure [URL] Alternatively, you can use: curl -k [URL] A website is insecure if it has an expired, misconfigured, or no SSL certificate ensuring a safe connection libcurl performs peer SSL certificate verification by default. This is done by using a CA certificate store that the SSL library can use to make sure the peer's server certificate is valid There are other useful operations like checking the remote server port, download files etc can be performed using curl command in Linux. curl command supports different protocols like HTTP, HTTPS, TLS, FTP, SSL, SMTP, POP3, SCP, LDAP, IMAP etc. We will check the usage of curl command in various places using different examples

Testing client certificates with Curl - Mostly Copy and Past

Ignore SSL warnings in curl. Sometimes your testing scenario or cycle is so far ahead of your infrastructure that you don't even have time or opportunity to procure proper SSL certificates for you website To check the SSL certificate expiration date, we are going to use the OpenSSL command-line client. OpenSSL client provides tons of data, including validity dates, expiry dates, who issued the TLS/SSL certificate, and much more. Check the expiration date of an SSL or TLS certificate Open the Terminal application and then run the following command Web browser SSL information One of the most traditional ways to extract SSL data from a certificate is by using your web browser. In this case we performed the test with Google Chrome ⁴ and as expected, it was kind enough to give us the right information about our SSL certificate From this article you will learn how to connect to a website over HTTPS and check its SSL certificate expiration date from the Linux command-line.. Besides of validity dates, i'll show how to view who has issued an SSL certificate, whom is it issued to, its SHA1 fingerprint and the other useful information.. Linux users can easily check an SSL certificate from the Linux command-line, using.

(Schannel) This option tells curl to ignore certificate revocation checks when they failed due to missing/offline distribution points for the revocation check lists. Added in 7.70.0. --ssl (FTP IMAP POP3 SMTP) Try to use SSL/TLS for the connection. Reverts to a non-secure connection if the server doesn't support SSL/TLS. See also --ftp-ssl-control and --ssl-reqd for different levels of. Also using the CURLOPT_SSL_VERIFYPEER option in the cURL request need a valid SSL certificate. Here the self-signed certificate may not work. Here the self-signed certificate may not work. So we ask the users to use a valid certificate for a secure connection This will open an SSL connection to example.com with port 443 and print the SSL certificate used by the service. After connecting you can manually send http requests. This is similar to using telnet to connect to an http service and manually sending an http, i.e GET, OPTIONS or TRACE request. OPTIONS / HTTP/1.1 Host: example.com. Press Enter Twice: 2. Test with CURL - CURL is the another. Specify the name of the file you want to save the SSL certificate to, keep the X.509 Certificate (PEM) format and click the Save button; Cool Tip: Check the expiration date of the SSL Certificate from the Linux command line! The fastest way! Read more → Internet Explorer. Download and save the SSL certificate of a website using Internet. As you see, there's a whole lot of misinformation about how to deal with these SSL certificate problem, verify that the CA cert is OK errors with cURL. Nearly everyone advises you to turn off CURLOPT_SSL_VERIFYPEER, and in fact, countless comments on the PHP manual page for curl_setopt tell you to do this

cURL is a command-line tool to get or send data using URL syntax. If you are working as a developer or in the support function, you must be aware of cURL command usage to troubleshoot web applications. cURL is cross-platform utility means you can use on Windows, MAC, and UNIX.. The following are some of the most used syntaxes with an example to help you I did this I have curl configured to use both CApath and CAfile options. When ca-certificates.crt is valid, curl works. For testing, we deleted ca-certificates.crt. I expected the following After ca-certificates.crt is deleted from the f.. $ curl -1 https://192.168.101.1 curl: (60) SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed In this case, since we are using the ip-address, which doesn't match the SSL certificate that is installed on the webserver. So, we are getting the above SSL3_GET_SERVER_CERTIFICATE:certificate verify.

ssl - Display received cert with curl? - Stack Overflo

• SSL Certificate Error Fix [Tutorial].SSL certificates are used on millions of websites to provide security and confidentiality for online transactions. Howev..
• curl, or an application that uses libcurl, may have a problem with an SSL certificate that works fine when using a web browser to access the same URL. Typical error output from curl looks like this: $ curl -v https://my-subdomain.mysecuresite.com Trying xxx.xxx.xxx.xxx:443 TCP_NODELAY set Connected to my-subdomain.mysecuresite.com (xxx.xxx.xxx.xxx) port 443 (#0) ALPN, offering h2 ALPN, offering http/1.1 successfully set certificate verify locations: CAfile: /etc/ssl/certs/ca.
• In a process whereby cURL received an untrusted self-signed certificate, CA, the sever secure connection request will trigger an error because the certificate's legitimacy could not be verified during the SSL handshake. Thus the communication with the server will be disrupted leading to an error with SSL

If there's a certificate missing or expired, or a domain name mismatch in the certificate of the website you're connecting to, most of browsers and command line tools will warn you. For instance, curl will show you something like this There are two ways to fix SSL certificate problem with PHP curl module. Specify the valid CA certificate to curl client Checking Certificates. You can check if the correct root certificate is installed by querying our platform using the following cURL command: curl --verbose https://live.cardeasexml.com/ultradns.php. If the connection is successful and verified by the root certificate, you will see the following entry below

cURL has not been properly installed or set up to identify trusted certificates in the OS' store In Windows, you will need to use a special version or cURL that uses Secure Channel (WinSSL) or specify the certificate everytime you run the program; Certificate is not specified when running the cURL comman Connect HTTPS/SSL URL and ignore any SSL certificate error. When you try to access SSL/TLS cert secured URL and if that is having the wrong cert or CN doesn't match, then you will get the following error. curl: (51) Unable to communicate securely with peer: requested domain name does not match the server's certificate. Good news, you can instruct cURL to ignore the cert error with --insecure flag Hi @bagder Ok so I just tried with an empty file, so the expected behavior should be to fail validation on CAfile and move on to CApath. However I get the same error: $ ll -rw-r--r-- 1 root root 0 Oct 15 21:24 /etc/ssl/certs/ca-certificates.crt $ curl -v https://ipinfo.io * Trying 216.239.38.21:443..

Does curl have a --no-check-certificate option like wget

I recently needed to put together a PowerShell script that would check the expiration of some external and internal certificates for my company and let me know when they are close to expiring. Since some of the hosts were IP addresses, and some certs were not trusted by the machine running the check, I had to have a way to disable certificate chain validation (equivalent to the curl option -k ) SSL Certificate Error Fix [Tutorial].SSL certificates are used on millions of websites to provide security and confidentiality for online transactions The problem: Using Digital Certificates issued by a Certification Authority (CA) with curl.. The situation: I have a .cer (Digital Certificate) file, .pfx (Personal Information Exchange file i.e., the private key for the certificate).I cannot use either of these to authenticate to the web service as curl would not accept these formats. The solution certificate verification if the chain ends with an intermediate certificate: and not with a root cert. (Added in 7.68.0). IP CURLSSLOPT_REVOKE_BEST_EFFORT: Tells libcurl to ignore certificate revocation checks in case of missing or: offline distribution points for those SSL backends where such behavior is: present. This option is only supported for Schannel (the native Windows SSL

SSL certificate problem: unable to get local issuer certificate. (cURL error code 60) This is a common error that occurs whenever you attempt to use PHP's cURL functions to connect to a HTTPS website. Essentially, your cURL client has not been configured to connect to SSL-enabled websites In this recipe, curl uses the -k argument that makes an HTTPS connection (on port 443) but doesn't check the details of SSL certificate. If it's broken, outdated, or there's a web server misconfiguration, this request will still go through but no trust will be established. Use SSL Version 1 curl -1 https://catonmat.ne By default, each cURL request can access only SSL certified websites. However, at times it is required to access those sites which are self-signed. To verify that your cURL request is able to access self-signed websites or not, use below command: curl <URL of the domain to be access> The curl error 77 problem with the SSL CA cert can occur when SSL chain certificate files are missing or broken on the server

Curl by default performs the SSL cert verification. If you are using a CA authority bundle, then the default bundle name is curl-ca-bundle.crt. You can specify a different bundle using the -cacert option. But, in our case, we want to use the TLSv1 protocol, but without the SSL certificate verification Sometimes, when we make a curl call to third party services, we get an error curl: (60) SSL certificate : unable to get local issue The plugin uses cURL to open your webpage to check if the site can load over SSL, to test if your certificate is valid, and to connect to really-simple-ssl.com to activate your Really Simple SSL Pro license. cURL works fine on the vast majority of webservers

How to ignore SSL error in cURL - Simplified Guid

When configuring a local GitLab instance to mirror a repository from a remote GitLab instance that uses a self-signed certificate, you may see the SSL certificate problem: self signed certificate error message in the user interface. The cause of the issue can be confirmed by checking if: curl fails CURL is activated, I've checked by creating a phpinfo.php that echo's back all PHP information (cannot post link) Our HTTP-logs are saying: SSL certificate problem: unable to get local issuer certificate. Does anybody know how to fix this? Would very much appreciate all type of help in the right direction. Regards, Jona On Ubuntu Lucid, curl is compiled to use the CA certificate directory /etc/ssl/certs/. You will see the following when executing curl against a site using HTTPS If you try to run curl and receive the following error curl: (77) error setting certificate verify locations: CAfile: /etc/ssl/certs/ca-certificates.crt CApath: none. When you use curl in Linux machines to make remote calls to SSL sites, you need to have latest root certificates installed. Recently I came across a situation where the newer root certificate were not available and so the remote call suddenly started failing. First, you will have to find the location of your certificate files : curl-config --c

1-The first security setting that is disabled is CURLOPT_SSL_VERIFYHOST.If this setting is not specified in the cURL connection the default value is 2.However, many developers add this setting to false or 0.. This setting checks whether the certificate on the remote server responds with a valid TLS certificate signed by a trusted Certificate Authority (CA) -k, --insecure (TLS) By default, every SSL connection curl makes is verified to be secure. This option allows curl to proceed and operate even for server connections otherwise considered insecure. The server connection is verified by making sure the server's certificate contains the right name and verifies successfully using the cert store If -L or --check-ssl-labs are specified the plugin will check the cached status using the SSL Labs Assessment API. The plugin will ask for a cached result (maximum age 1 day) to avoid to many checks. The first time you issue the check you could therefore get an outdated result

Add Self-Signed SSL Cert To cURL. In an earlier post we talked about adding a self-signed SSL certificate to Google Chrome so that you can use SSL certificates on your local development machine. This solves the problem of browsing around on your local site, but it doesn't solve the issue of making cURL calls. For example, if your site is running BackyBuddy or anything else that involves. Stack Exchange Network. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.. Visit Stack Exchang Curl (60) SSL Certificate Problem: Unable to get local issuer certificate. Note: This is a system configuration problem, and not specific to either cURL or Bolt. The information here is provided as a useful starting point only. Installing Automatically Converted CA Certificates from mozilla.org¶ Download cacert.pe

id #55; cURL error: SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed (60)' Everyone suggest using some specific curl options from PHP code to fix this problem. I think this shouldn't be the way. Because I didn't have any problem with my old version of XAMPP and happened only after installing. First, if you don't already have a generic SSL certificate (local/test environment only - NEVER USE THIS IN PRODUCTION), grab one from here. I keep mine in the home folder which is C:\Users\MyUserName\ on the PC. Next, locate your PHP installation. In Windows, mine is at C:\php-7.4 Invoke-WebRequest : The request was aborted: Could not create SSL/TLS secure channel. When you try to use Invoke-WebRequest or Invoke-RestMethod on a web URL with old or insecure certificates or CAs. Example: PS C:\Users\CorrM1> Invoke-WebRequest -Uri https://badwebsite.with.crap.certs:1943/application/service

curl --header 'Host: adfs.mysite.com' https://192.168.1.100 curl: (35) OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to 192.168.1.100:443 . Here, we see the server basically tell us there is no SSL certificate paired to the SNI name of '192.168.1.100' . Again, SNI is ignoring the host header, because the host header only gets sent as part of the HTTP call AFTER the SSL session. If this HTTPS server uses a certificate signed by a CA represented in the bundle, the certificate verification probably failed due to a problem with the certificate (it might be expired, or the name might not match the domain name in the URL). If you'd like to turn off curl's verification of the certificate, use the -k (or --insecure) option. After googling for a few minutes, I found some ideas at StackOverflow on why my SSL certificate isn't working correctly. The first possible cause that I found was this: my server isn't providing an intermediate certificate as it should in the TLS handshake. One of the easiest ways to check if that's true is to run ssllabs test. However. If you need an SSL certificate, check out the SSL Wizard. More Information About the SSL Checker Whether an SSL certificate is installed; Whether the server is giving out the correct intermediate certificates so there are no untrusted warnings in users' browsers; The certificate's expiration date - The SSL Checker even lets you set up a reminder of a certificate's expiration so you don't.

curl_verify_ssl_host boolean. Verify the host. Defaults to FALSE. Hinweis: This option is available for both the http and ftp protocol wrappers. curl_verify_ssl_peer boolean. Require verification of SSL certificate used. Defaults to FALSE. Hinweis: This option is available for both the http and ftp protocol wrappers CURLOPT_SSL_VERIFYPEER This checks the certificate is valid against a CA. When connecting to a secure server it presents you with a certificate signed by a CA. With CURLOPT_SSL_VERIFYHOST enabled (default) Curl verifies whether the certificates common name matches that of the host. If certificate doesn't match the host server the connection fails. With CURLOPT_SSL_VERIFYPEER enabled (default. TLS certificate pinning is a way to verify that the public key used to sign the servers certificate has not changed. It is pinned. When negotiating a TLS or SSL connection, the server sends a certificate indicating its identity. A public key is extracted from this certificate and if it does not exactly match the public key provided to this option, curl will abort the connection before. More details here: http://curl.haxx.se/docs/sslcerts.html curl performs SSL certificate verification by default, using a bundle of Certificate Authority ( CA) public keys ( CA certs). If the default bundle file isn 't adequate, you can specify an alternate file using the --cacert option. If this HTTPS server uses a certificate signed by a CA.

How To Use Curl with HTTPS Protocol and URLS? - POFTU

• Setting this option to true means Curl will cryptographically verify that the certificate was issued by a Certificate Authority (CA) that Curl trusts. If set to false, Curl will accept self-signed certificates, that provides little to no protection. Insecure SSL and TLS versions . Curl supports SSL v2, v3, and TLS versions 1.0 through 1.3
• es whether curl verifies the authenticity of the peer's certificate. A value of 1 means curl verifies; 0 (zero) means it doesn't. When negotiating a.
• In my PHP.ini I tell Curl where the intermediary certs are. If I manually test Curl from a command line and point to the intermediary certs the curl test is successful. Cloudflare is correctly working with strict SSL and SSL validators say everything is fine
• Then you will have to edit the root CA cert that CURL uses so that it can verify you SSL cert. The PHP CURL configuration needs to point to this file and if you use WordPress, this root CA cert needs to be added to the WordPress includes as well. Let's begin. First install XAMPP and get it running so that you can access it's dashboard in your browser via http. Next, we want to add the path.
• A protip by nishant about powershell. To simply ignore SSL certificate check while making HTTP Requests from PowerShell, add below line
• ssl_verify_mode: Specifies whether the Logstash server verifies the client certificate against the CA. You can use curl to validate the certificate even though the protocol used to communicate with Logstash is not based on HTTP. For example: curl -v --cacert ca.crt https://logs.mycompany.com:5044. If the test is successful, you'll receive an empty response error: * Rebuilt URL to: https.

Why do we need to disable SSL check PHP cURL? When we try to open any website and if it has Security Certificate issue then the browser will show the screen for Untrusted connection. In this case, we are clicking on I... Continue Reading � We should now check the validity of our SSLs and ensure that browsers see the certificate properly. Visit sslcheck.liquidweb.com and type in your domain names to check the site's SSL on your server. You should see four green check marks, indicating SSL protection Checks an X.509 certificate: - checks if the server is running and delivers a valid certificate - checks if the CA matches a given pattern - checks the validity License GPL check_ssl_certificate

Displaying a remote SSL certificate details using CLI

Here is the CURL command to verify SSL certificate returned by the serve Curl verifies whether the certificate is authentic, i.e. that you can trust that the server is who the certificate says it is. This trust is based on a chain of digital signatures, rooted in certification authority (CA) certificates you supply. curl uses a default bundle of CA certificates (the path for that is determined at build time) and you can specify alternate certificates with th Using system SSL Certificates in CURL The CURL library supports various SSL backends. We build currently CURL in three variants. The main one uses OpenSSL cross platform. For Windows we build a second copy using Windows own SSL. For MacOS and iOS we build the third variant with transport security. The native SSL libraries from Mac and Windows use the certificates installed on the system, while. CURLOPT_SSL_VERIFYPEER: FALSE to stop CURL from verifying the peer's certificate. Alternate certificates to verify against can be specified with the CURLOPT_CAINFO option or a certificate directory can be specified with the CURLOPT_CAPATH option. CURLOPT_SSL_VERIFYHOST may also need to be TRUE or FALSE if CURLOPT_SSL_VERIFYPEER is disabled (it defaults to 2) This topic has been deleted. Only users with topic management privileges can see it

How to ignore invalid and self signed ssl connection

There are times though that you'll want Wget to ignore SSL certificate check such as when trying to access websites with expired SSL certificate or those with self-signed certificates. This could easily be done with the --no-check-certificate option. --no-check-certificate Don't check the server certificate against the available certificate authorities. Also don't require the URL host name to. << Back to the Curl Ignore Certificate Checks example Disabling cURL's certificate checks It is often useful to disable the certificate checking, if you want to make requests to sites with self-signed certificates, or to test a site that has a misconfigured certificate If I am not wrong, similar to browsers, curl should only need the root certificate to verify the signature of the SSL certificate for www.example.com. So why does curl expect both of the root and intermediate certificates in order to be able to verify that it is indeed communicating with the correct server

security - How to verify the SSL fingerprint by command

1. Python Code for Curl Ignore Certificate Checks Back to Curl Ignore Certificate Checks Disabling cURL's certificate checks It is often useful to disable the certificate checking, if you want to make requests to sites with self-signed certificates, or to test a site that has a misconfigured certificate
2. Already did that and the problem persists. Also tried to move the pem certificate inside the apache/ssl folder and use the openssl.cafile directive, but with no luck
3. read. When you use curl in Linux machines to make remote calls to SSL sites, you need to have latest root certificates installed. Recently I came across a situation where the newer root certificate were not available and so the remote call suddenly started failing. First, you.
4. e whether this is the correct setting for you or not.
5. They were able to verify the peer certificate, so ti seems just the two servers in question weren't able to verify the certificate. It seems to be sporadic though, this morning it is not occurring, and I can't test an issue that is not occuring :-\ so for now I'll just wait until it happens again try to diagnose it so I can provide you better information
6. Windows IIS with PHP: Curl (60) SSL Certificate Problem: Unable to get local issuer certificate. Martin 23/03/2017 26 Comments. Microsoft IIS. When adding PHP to your IIS installation on a Windows server, and you afterwards add SSL to it, everything may work at first hand, but if you need to run some curl scripts, that accesses the server with https://, you may run into this error: Curl (60.

Check SSL certificate expiry with PHP and curl - KOPIS

1. OpenSSL comes with an SSL/TLS client which can be used to establish a transparent connection to a server secured with an SSL certificate or by directly invoking certificate file. This guide will discuss how to use openssl command to check the expiration of .p12 and start.crt certificate files. Below example demonstrates how the openssl command.
2. CURLOPT_SSL_VERIFYHOST controls the check for the name within the certificate. Optionally, you can tell curl to verify the certificate's public key against a known hash using CURLOPT_PINNEDPUBLICKEY or CURLOPT_PROXY_PINNEDPUBLICKEY. Here too, a mismatch will cause the transfer to fail. Authentication. TLS Client certificates. When using TLS and the server asks the client to authentice.
3. Roots Of SSL Certificate Problem: Unable To Get Local Issuer Certificate. When you are using client SSL certificates and try to make a request to a secured HTTPS source, you need to share an SSL certificate to verify your identity. During this time, if the root certificate on the system does not work correctly, the SSL certificate problem.
4. エラー内容「curl: (60) SSL certificate problem: unable to get local issuer certificate」。対策1. 証明書の検証を無効にする。対策2. CA証明書を指定する。対策3. CA証明書を環境変数を利用して設定する�
5. Test for the most recent SSL/TLS vulnerabilities and weaknesses; Test for insecure external content (HTTP). Test for email server's SPF, DKIM and DMARC implementation. Test for SSL certificates expiration for enumerated subdomains
6. Checks port 443 (HTTPS) by default. For a different port, specify it with the hostname like: example.com:993. Generate the Correct Chain. The generated chain will include your server's leaf certificate, followed by every required intermediate certificate, optionally followed by the root certificate. Paste your certificate in the box below to generate the correct chain for it, based on the.

Connect to the server using SSH. Download the CA certificate store from the official cURL website and move it to the directory /etc/ssl/certs/: # wget https://curl. Reason: SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed. The problem is that cURL has not been configured to trust the server's HTTPS certificate. The concepts of certificates and PKI revolves around the trust of Certificate Authorities (CAs), and by default, cURL is setup to not trust any CAs. added the option I thought that you mostly _either_ want to verify the cert or you don't. Of course I could very well agree on adding an option that would allow this. In libcurl land however, you have the option to verify the cert part and skip the host name vs CN checking part. Disable CURLOPT_SSL_VERIFYHOST and no CN or other checks will be used against the host name.--Commercial curl and. Curl hangs after SSL cert verify (too old to reply) Darrell Bircsak 2005-06-10 01:41:16 UTC. Permalink. I am connecting to my FTPS AUTH SSL server like this: curl_easy_setopt(curl_handle, CURLOPT_VERBOSE, 1); curl_easy_setopt(curl_handle, CURLOPT_URL, ftp://localhost); curl_easy_setopt(curl_handle, CURLOPT_FTP_SSL, CURLFTPSSL_TRY); curl_easy_setopt(curl_handle,CURLOPT_SSL_VERIFYPEER,0); curl. Testing SSL. Use a command line utility like curl to test that everything is configured correctly for your secure domain. The -k option tells curl to ignore untrusted certificates. $ curl -kvI https://www.example.com * About to connect() to www.example.com port 443 (#0) * Trying 50.16.234.21... connected * Connected to www.example.com (50.16.234.21) port 443 (#0) * SSLv3, TLS handshake, Client. python : error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed curl : SSL Certificate: Invalid certificate chain 내용도 깊이 모르고 네트워크 관리자 권한도 없다면 약간의 위험을 감수하고 해당 software의 인증기능을 비활성화 시키는 것이 정신건강에 좋다