CA Server - OpenSSL

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  • เผยแพร่เมื่อ 8 ธ.ค. 2024

ความคิดเห็น • 59

  • @TechTutorialsDavidMcKone
    @TechTutorialsDavidMcKone  3 ปีที่แล้ว +3

    Config files used in the video below...
    NOTE: The policy has since been changed and match is not used for the Organization name. This is because some CSRs were found to cause problems when signing, where even though the Organization name was the same, openssl generated an error saying they didn't match
    *** root-ca.conf ***
    [ ca ]
    # 'man ca'
    # Used by the ca command
    default_ca = CA_default
    [ CA_default ]
    # Directory and file locations
    dir = .
    certs = $dir/certs
    new_certs_dir = $dir/newcerts
    database = $dir/index
    serial = $dir/serial
    RANDFILE = $dir/private/.rand
    # RANDFILE is for storing seed data for random number generation
    # Root CA certificate and key locations
    certificate = $dir/certs/root-ca.crt
    private_key = $dir/private/root-ca.key
    # Default message digest, we'll opt for SHA2 256bits
    default_md = sha256
    name_opt = ca_default
    cert_opt = ca_default
    default_days = 365
    preserve = no
    policy = policy_strict
    [ policy_strict ]
    countryName = supplied
    stateOrProvinceName = supplied
    organizationName = supplied
    organizationalUnitName = optional
    commonName = supplied
    emailAddress = optional
    [ req ]
    # 'man req'
    # Used by the req command
    default_bits = 2048
    distinguished_name = req_distinguished_name
    string_mask = utf8only
    default_md = sha256
    # Extensions to use for -x509
    x509_extensions = server_cert
    [ req_distinguished_name ]
    # Certificate signing request
    countryName = Country Name (2 letter code)
    stateOrProvinceName = State or Province Name
    localityName = Locality Name
    organizationName = Organization Name
    organizationalUnitName = Organizational Unit Name
    commonName = Common Name
    emailAddress = Email Address
    # Defaults
    countryName_default = GB
    stateOrProvinceName_default = England
    organizationName_default = TempLab
    [ v3_ca ]
    # ' man x509v3_config'
    # Extensions for root CA
    subjectKeyIdentifier = hash
    authorityKeyIdentifier = keyid:always,issuer
    basicConstraints = critical, CA:TRUE
    keyUsage = critical, digitalSignature, cRLSign, keyCertSign
    [ usr_cert ]
    # `man x509v3_config`
    # Extensions for client certificates
    basicConstraints = CA:FALSE
    nsCertType = client, email
    nsComment = "OpenSSL Generated Client Certificate"
    subjectKeyIdentifier = hash
    authorityKeyIdentifier = keyid,issuer
    keyUsage = critical, nonRepudiation, digitalSignature, keyEncipherment
    extendedKeyUsage = clientAuth, emailProtection
    [ server_cert ]
    # Extensions for server certificates
    basicConstraints = CA:FALSE
    nsCertType = server
    nsComment = "OpenSSL Generated Server Certificate"
    subjectKeyIdentifier = hash
    authorityKeyIdentifier = keyid,issuer:always
    keyUsage = critical, digitalSignature, keyEncipherment
    extendedKeyUsage = serverAuth
    ---
    *** csr/testserver-csr.conf ***
    [ req ]
    # 'man req'
    # Used by the req command
    default_bits = 2048
    distinguished_name = req_distinguished_name
    req_extensions = req_ext
    prompt = no
    [ req_distinguished_name ]
    # Certificate signing request
    countryName = GB
    stateOrProvinceName = England
    organizationName = TempLab
    commonName = test.templab.lan
    [ req_ext ]
    subjectAltName = @alt_names
    [ alt_names ]
    DNS.1 = test.templab.lan
    IP.1 = 172.16.21.20

  • @bambam0099
    @bambam0099 ปีที่แล้ว +7

    One thing I have always hated when attending training courses is how the instructors have you enter commands but never explain why. Your comments are priceless and greatly appreciated. Not only are you easy to follow but more importantly, it's easy to understand why. Thank you for putting in the time for making the videos!

  • @charles.oliveira
    @charles.oliveira 2 ปีที่แล้ว +12

    How come you don't have thousands subscribers and views??? This video is BY FAR the best I've found out regarding OpenSSL for PKI. Thank you sir for your video!

    • @TechTutorialsDavidMcKone
      @TechTutorialsDavidMcKone  2 ปีที่แล้ว +1

      I've no idea what does and doesn't get view counts up these days, but at the end of the day, as long as someone finds a video useful, that's enough for me
      Anyway, thanks for the feedback, it's really appreciated. And glad to hear you found the video helpful

    • @DVMovies1999
      @DVMovies1999 2 ปีที่แล้ว +2

      @@TechTutorialsDavidMcKone Can’t agree more with Charles! I’ve got some knowledge about certificates but not with setting up my own PKI. Always got some error and didn’t find out why. This video really helped with making the whole process much more clear. Thank you so much for your time and knowledge David 🙂

    • @TechTutorialsDavidMcKone
      @TechTutorialsDavidMcKone  2 ปีที่แล้ว +2

      That's really good to know so thanks for the feedback

  • @digitalpunkdaft
    @digitalpunkdaft ปีที่แล้ว +3

    David, I struggled for over 3-4 months to create my own CA server, thank you for sharing this knowledge and for explaining everything so well. I really appreciate your work and knowledge, greetings from Mexico

    • @TechTutorialsDavidMcKone
      @TechTutorialsDavidMcKone  ปีที่แล้ว +2

      openSSL can be confusing to use as a CA but it's very useful for internal use
      So glad to hear the video was helpful

  • @1908gonzo
    @1908gonzo ปีที่แล้ว +1

    Excellent job on this video. So very helpful. the SSL world can get really complicated with Self Signed CA and Server Keys and Certificates. You've helped make it so much more clear.

  • @jonathanrider4417
    @jonathanrider4417 ปีที่แล้ว +2

    Thank you for this David! This subject is not generally covered very well in my opinion (novice) - your explanations, while somewhat lengthy, are very illuminating to me. Certificates have been a big mystery to me and all of this is very helpful. I hope to be signing some certificates soon thanks to you!

    • @TechTutorialsDavidMcKone
      @TechTutorialsDavidMcKone  ปีที่แล้ว

      Thanks for the feedback, much appreciated
      Good to know the video has been helpful

  • @DrLevi1000
    @DrLevi1000 2 ปีที่แล้ว +3

    Hi David,
    Also from me a big thank you for the excellent video about certificates. It helped me a lot understanding the whole process of certificate handling. I guess this detailed 1h40min+ video took you easily one day :)
    Thanks and enjoy your coffee :)
    Mark

  • @itssoaztek4592
    @itssoaztek4592 2 ปีที่แล้ว +2

    Thank you for your effort to provide a great resource on openssl !! It helped me immensely to make my private network more secure.

    • @TechTutorialsDavidMcKone
      @TechTutorialsDavidMcKone  2 ปีที่แล้ว

      Thanks for the feedback, always appreciated
      And good to hear you found the video helpful

  • @krishnaspicy
    @krishnaspicy 2 ปีที่แล้ว +1

    Great Video! I have implemented Internal certificate Authority in our environment. It is working well. Good explanation. Once again, thank you.

  • @flymoracer
    @flymoracer 2 ปีที่แล้ว +1

    Really interesting post, thanks. Its true that revocation, at least for internet browsers, is currently broken, but there are very valid use cases where it can still be useful. For the purposes of a private home lab CA this solution is perfect. Nice and simple, assuming a basic level understanding on how certificates and CA's work, and doesnt require a private CA infrastructure, which would be overkill in this situation. In a business setting though I'd really consider the security implications as this approach does ignore some of the widely accepted good practice. Also, beyond a really small implementation I'd suggest that its too labour intensive and prone to errors. If you're issuing certificates for any public facing servers then there are great solutions from the likes of Lets Encrypt, but thats a different use case. Great video.

    • @TechTutorialsDavidMcKone
      @TechTutorialsDavidMcKone  2 ปีที่แล้ว +1

      Thanks for the feedback, really appreciated
      The problem with certificate revocation is it's no longer supported by the likes of Google Chrome, or at least not when it involves a private CA as they've adopted a different strategy
      For public use, there's certainly no gain in using something like this, especially when the whole process can now be automated
      So this is more for internal use as unless you have public facing servers, the validation still requires giving away private information which has never been a good idea

  • @pama1
    @pama1 2 ปีที่แล้ว +1

    Content is awesome, will be trying this in my lab later this week. One improvement would be to use bigger font or zoom into the work area to read more easily.

  • @КонстантинПучков-г8и
    @КонстантинПучков-г8и 9 หลายเดือนก่อน +2

    Добрый день! Класс, все получилось! Спасибо Вам большое!

    • @TechTutorialsDavidMcKone
      @TechTutorialsDavidMcKone  9 หลายเดือนก่อน

      Good to know the video helped.
      Thanks for the feedback

    • @barma1309
      @barma1309 หลายเดือนก่อน

      Только приступаю

  • @المستقبلالآن-ق5ث
    @المستقبلالآن-ق5ث หลายเดือนก่อน +1

    Thank you for this great video , it was very useful and valuable 🎖🎖🎖

  • @alphenit
    @alphenit 2 ปีที่แล้ว +1

    Thank for this great tutorial @Tech Tutorials - David McKone!
    Was wondering: If somehow you had problems with your ca server vm (for example upgrading linux doesn't go well) and you decide you want a new server VM, do you just install a new VM and copy over everything in /home/caadmin to the new server and all is well or is it more complicated than that?

    • @TechTutorialsDavidMcKone
      @TechTutorialsDavidMcKone  2 ปีที่แล้ว +1

      Because it's a VM you can take a snapshot before doing any upgrades and roll it back if things go bad
      But if for some reason you wanted a different computer, then you can just copy across the contents across

    • @alphenit
      @alphenit 2 ปีที่แล้ว

      @@TechTutorialsDavidMcKone For sure. I installed it on a minimal ubuntu machine but have been looking at NixOS also so might need to migrate at some point :)
      Another question: Do you always need to create a csr/device.conf if you need to create a new cert for a new device? Or is uploading the csr from the target device enough?
      Guess I don't understand that bit well enough. When you create a CSR for VMware vCenter for example you have to mandatory fill out all the fields anyway so don't grasp what the conf file brings you extra?

    • @TechTutorialsDavidMcKone
      @TechTutorialsDavidMcKone  2 ปีที่แล้ว

      @@alphenit Web browsers like Google Chrome need a Subject Alternate Name in the certificate
      Even though that will probably be in the CSR, OpenSSL ignores it
      So you need an extra file for OpenSSL to read the SAN details from to get a signed certificate with includes the SAN

    • @alphenit
      @alphenit 2 ปีที่แล้ว

      @@TechTutorialsDavidMcKone ah I see now, thank you, subscribed!

  • @sidneyking11
    @sidneyking11 2 ปีที่แล้ว +1

    In your video at 50:00 you reference a root-ca.conf file. Where to locate this file? I do not see it in my ca folder. thank you

    • @TechTutorialsDavidMcKone
      @TechTutorialsDavidMcKone  2 ปีที่แล้ว

      It's the base config file for the Root CA server and you have to create this
      Check my pinned comment for this as the description wouldn't accept it

    • @nonkelsue
      @nonkelsue 2 ปีที่แล้ว

      @@TechTutorialsDavidMcKone Where can this 'pinned comment' be found? I must be overlooking it...

    • @TechTutorialsDavidMcKone
      @TechTutorialsDavidMcKone  2 ปีที่แล้ว +1

      ​@@nonkelsue Not sure if I forgot to pin it but it is now, so it's at the top of the comments

    • @nonkelsue
      @nonkelsue 2 ปีที่แล้ว

      @@TechTutorialsDavidMcKone Thanks David! Appreciated!

  • @Aaron-n2x2v
    @Aaron-n2x2v ปีที่แล้ว +1

    hi David ive setup a rootca and setup apache with the server certificates however im using an ip address and my browser isnt trusting the connection despite installing the rootca.crt to the web browsers certificate store. my question is do i need to setup a dns server before setting this up?

    • @TechTutorialsDavidMcKone
      @TechTutorialsDavidMcKone  ปีที่แล้ว

      You can have a certificate based on an IP address
      But usually you tie it to the fully qualified domain name and add the IP address as a subject alternate name to allow you to use both
      And although a DNS server helps, you can also just edit the hosts file on a computer and use that to resolve the FQDN

  • @HusseinHussein0x7
    @HusseinHussein0x7 8 หลายเดือนก่อน +1

    I already have servers with IIS and paid SSL Certificate does implementing OpenSSL effect the certificate on those servers?

    • @TechTutorialsDavidMcKone
      @TechTutorialsDavidMcKone  8 หลายเดือนก่อน

      As far as I'm aware a web server can only use one certificate for a website
      But a web server can host multiple websites, each with their own certificate

  • @hugocalhau6937
    @hugocalhau6937 6 หลายเดือนก่อน +1

    Very nice video

  • @marinatyres7630
    @marinatyres7630 3 ปีที่แล้ว +1

    Very informative video.. I have a OpenSSL query.. if you can help.. In the 'ecstresstest' I want to know the key value of 'kP256DefaultResult' if I set NUM_REPEATS equals 100 only.. can you tell me how to find that?

  • @sidneyking11
    @sidneyking11 3 ปีที่แล้ว +1

    @Tech Tutorial, I am thinking about setting up a RootCA ubuntu server. My chrome browser has issues connecting to my internet webserver or other admin pages on the inside of my network. Certificates is still difficult to get the browser to behave right if it gets a self signed certificate. At lease the sarfai browser would give the error but does give an option to access the website. I have not had a change to view your video completely, does it cost to get a legit certificate or make my server a RootCA? I would like to make everything on my network to require https: Not being a experience Linux person, sometimes its difficult to follow all the steps.
    Thank you

    • @TechTutorialsDavidMcKone
      @TechTutorialsDavidMcKone  3 ปีที่แล้ว

      Part of the problem with using a public certificate authority is that you need to own a domain and they need to check a server is legitimate so they would want access to a public facing server
      I have worked with companies that had public servers who purchased wildcard certificates to then use internally on any internal device
      As I don't have a public server and due to the costs, I opted for an internal root CA

  • @bcthales8673
    @bcthales8673 2 ปีที่แล้ว +1

    you missed a big part in configuration - crls or ocsp setup. Otherwise good.

    • @TechTutorialsDavidMcKone
      @TechTutorialsDavidMcKone  2 ปีที่แล้ว

      Thanks for the feedback, it's really appreciated
      It's a while since I made this video but I think I tried to explain that I deliberately ignored those options
      The reason why is they'd fallen out of favour with web browser manufacturers
      Google for instance seemed to have switched over to some other mechanism where they provide the web browser with revoked certificate information rather than the web browser checking with the revocation server and that won't work for a private CA
      I noticed a setting in Firefox for oscp mind, but with less than 4% of the market share it didn't seem worthwhile even using that

  • @He-Is-One-and-Only
    @He-Is-One-and-Only 10 หลายเดือนก่อน +1

    Thank you and i am sorry its not even 17 minutes i am at deep sleep 😴😴😴 Could have just made the video 30 minutes Max. There's too much talking alot beating around bush using vector graphics. Sorry bro i don't like it tbh

    • @TechTutorialsDavidMcKone
      @TechTutorialsDavidMcKone  10 หลายเดือนก่อน

      I appreciate the feedback
      This was one of my earlier videos when the channel was just getting started
      Since then I've been taking on advice from folks like yourself to get better
      But again, thanks for taking the time to leave a comment

  • @soniablanche5672
    @soniablanche5672 2 ปีที่แล้ว +1

    On Windows, chromium based browsers (Chrome, Brave, Edge, etc.) will recognize CA that are in the Trusted Root CA store, for firefox you will have to set security.enterprise_roots.enabled to true for firefox to recognize CA in the Trusted Root CA store

    • @TechTutorialsDavidMcKone
      @TechTutorialsDavidMcKone  2 ปีที่แล้ว

      Thanks for the feedback, really appreciated
      Which version of Windows are you using?
      I double checked on a computer running Windows 10 Pro 21H2 and I just imported the certificate for Firefox as a trusted root CA
      Hit Ctrl-F5 and it now accepts the certificate
      I checked the settings and security.enterprise_roots.enabled was set to true
      The setting is also locked

    • @soniablanche5672
      @soniablanche5672 2 ปีที่แล้ว

      @@TechTutorialsDavidMcKone I'm also on Windows 10