openssl subject alternative name

Verify Subject Alternative Name value in CSR. X509v3 Subject Alternative Name: DNS:foo.example.com, DNS:bar.test.com, DNS:localhost 2-2. Viewed 8k times 6. Serial Number: The "ye olde way" is how I've typically made a CSR and private key. Not Before: Jun 10 09:29:01 2018 GMT Got there in the end though! きちんと中間CAで署名できたか、確認する。Subject, Issuer, X509v3 extensions 辺りに注意。X509v3 Subject Alternative Name もあるか。 $ openssl x509 -text newcert.pem ここまでできたら、次は nginx への組み込み。 nginx に Subject Public Key Info: updated at 2018-09-11 SAN (Subject Alternative Name) のオレオレ証明書 Linux SSL openssl 証明書 More than 1 year has passed since last update. The pertinent section is: X509v3 extensions: X509v3 Subject Alternative Name: DNS:Some-Server. This article explains a simple procedure to Create a Self-Signed SAN(Subject Alternate Name) Certificate Using OpenSSL. CA:FALSE This post details how I've been using OpenSSL to generate CSR's with Subject Alternative Name Extensions. By adding DNS.n (where n is a sequential number) entries under the “subjectAltName” field you’ll be able to add as many additional “alternate names” as you want, even not related to the main domain. Exponent: 65537 (0x10001) X509v3 Subject Alternative Name: DNS:my-project.site and Signature Algorithm: sha256WithRSAEncryption Generate the certificate openssl x509 -req \ -sha256 \ -days 3650 \ -in private.csr \ -signkey private.key \ -out The link I included talks about making a configuration file, which allows you to include SAN in your CSR. You may have noticed that since Chrome 58, certificates that do not have Subject Alternative name extensions will show as invalid. Self-Signed OpenSSL Certificates with Subject Alternative Name April 11, 2014 by simon 2 Comments I had all sorts of fun today trying to get Subject Alternative Names working with my OpenSSL Apache server. `openssl`: Subject Alternative Name. Reduce SSL cost and maintenance by using a single certificate for multiple websites using SAN certificate. $ echo|openssl s_client -connect google.com:443 2>/dev/null | openssl x509 -noout -text | grep "Subject Alternative Name" -A2 | grep -Eo "DNS:[a-zA-Z 0-9. The specification allows to specify additional additional values for a SSL certificate. [root@localhost serverAuth]# openssl req -extensions v3_req -new -newkey rsa:4096 -keyout server.key -nodes -x509 -days 365 -out server.csr Issuer: C=JP, ST=Osaka, L=Osaka, O=Kaede, CN=kaede.jp [/text], openssl.cnfに都度書いていけばいいのですが、開発環境のサーバが増えていくとopenssl.cnfに記載するのがめんどくさくなります。 -newkey rsa:4096 -keyout server3.key -nodes -x509 -days 365 -out server3.csr \ 通常、OpenSSLで作成する SSL証明書 は、ひとつのSubjectを持ち、ひとつのホスト名に対してのみ有効です。. @EddieJennings said in OpenSSL CSR with Subject Alternative Name: @JaredBusch Correct. DNS:ddd.kaede.jp, DNS:fff.kaede.jp, DNS:ddd.fff.kaede.jp, IP Address:192.168.3.11, IP Address:192.168.4.5 (Real CA's care a lot about the final cert's Subject and Extensions, blindly copying the extensions could be a security problem, so OpenSSL makes this explicit). $ cat << EOL > san.conf [ req ] default_bits = 2048 default_keyfile = san.key #name of the keyfile distinguished_name = req_distinguished_name req_extensions = req_ext [ req_distinguished_name ] countryName = Country Name (2 letter code) … Locality Name (eg, city) [Default City]:Osaka Note 1: In the example used in this article the configuration file is req.conf. 1a:f6:ef Objective: Get, dump or display the Subject Alternative Name (SAN) field from SSL certificate.. To print the SAN field from Google’s SSL certificate, use the following command syntax. [root@localhost serverAuth]# /opt/openssl/1.1.1/bin/openssl req -extensions v3_req -new \ Signature Algorithm: sha256WithRSAEncryption We'll be changing only two commands from the earlier walkthrough. 60:90:21:d6:cf:2c:78:4e:5d:aa:d8:55:cd:8b:fb: [/text], 作成したCSRを確認し、DNS及びIPアドレスが記載されてれば正常に作成されています。, [text highlight="1,28"] ですが、X509拡張のSAN(Subject Alternative Name)を使用すると、複数のホスト名に対応させることができます。. The following steps are provided for informational purposes only. CA:FALSE Firefox & Chrome now require the subjectAltName (SAN) X.509 extension for certificates.. ####↑↑subjectAltName = @alt_names を追記↑↑####, ####↓↓alt_names部分全て追記↓↓#### Not After : Jun 10 10:02:48 2019 GMT Certificate: Common Name (eg, your name or your server's hostname) []:kaede.jp DNS.4 = ccc.bbb.kaede.jp .....................................................................................................................................................++ Not After : Jun 10 09:29:01 2019 GMT Validity 自己証明書(通称:オレオレ認証)を使っている場合、正規証明書とみなそうとするためルート証明書を端末にインストールしますが、どうやらChromeだとそれだけだと不十分になったようです。, chrome58が4月19日は公開され、今まではドメイン名をsubjectのCN値に記載でOKだったのがSubject Alternative Name属性にDNS情報が記載されていないとダメになったようです。, CentOSにインストールされているopensslは「subjectAltName」の記載部分がないため、どこに記載したらいいんだ!? Scroll down and look for the X509v3 Subject Alternative Name section. X509v3 Subject Alternative Name: The certificate name can be in two locations, either the Subject or the Subject Alternative Name (subjectAltName) extension. 00:df:4b:e7:a4:60:01:69:4e:9b:db:47:f2:fb:85: 2b:53:33:2d:9c:1a:62:4b:0c:96:8a:9c:a0:13:67:2c:44:da: ', the field will be left blank. X509v3 Subject Alternative Name: DNS:my-project.site and Signature Algorithm: sha256WithRSAEncryption 生成证书 然后生成证书命令如下: openssl x509 -req \ -days 3650 \ -in private. b2:67:03:18:db:b3:66:6b There are quite a few fields but you can leave some blank Data: [/text], 「SAN」というセクションを新しく追加し、そこにsubjectAltNameを追加しています。 Add an subject alternative name to SSL certificate with openssl Dr. Xi. Exponent: 65537 (0x10001) Locality Name (eg, city) [Default City]:Osaka I had all sorts of fun today trying to get Subject Alternative Names working with my OpenSSL Apache server. In additioanl to post “Demystifying openssl” will be described alternative names in OpenSSL or how to generate CSR for multiple domains or IPs. [root@localhost serverAuth]# /opt/openssl/1.1.1/bin/openssl version 9a:8a:f9:32:4b:0c:10:84 Organization Name (eg, company) [Default Company Ltd]:Kaede Signature Algorithm: sha256WithRSAEncryption DNS.3 = bbb.kaede.jp X509v3 extensions: > <(printf "[SAN]\n subjectAltName=DNS:ddd.kaede.jp,DNS:fff.kaede.jp,DNS:ddd.fff.kaede.jp,IP:192.168.3.11,IP:192.168.4.5")) SSL Setup for multiple domains/subdomains is different than single-domain or wildcard domain setup. Organizational Unit Name (eg, section) []: subjectnames.txt, ホスト名を書く場合は「DNS」で、IPアドレスで書く場合は「IP」で指定します。ワイルドカード(*)も使用可能です。, 「X509v3 Subject Alternative Name」に、指定したsubjectAltNameが含まれるようになります。, ここで注意ですが、SAN拡張を含めた証明書は、元のSubjectを無視するようになります。このページで作成した証明書でいくと、Common Nameを「hoge.com」に Signature Algorithm: sha256WithRSAEncryption 00:c2:c6:f4:51:9c:29:17:8d:6f:c8:f8:2f:df:68: If you do need to add a SAN to your certificate, this can easily be done by adding them to the order form when purchasing your DigiCert certificate. There are quite a few fields but you can leave some blank When I inspect that CSR with openssl req -in key.csr -text I can see a corresponding section:. Public-Key: (4096 bit) 00:d1:0f:87:dd:81:5e:6e:1b:d1:e8:17:1c:5b:78: | @EddieJennings said in OpenSSL CSR with Subject Alternative Name: @JaredBusch Correct. I have added this line to the [req_attributes] section of my openssl.cnf:. ', the field will be left blank. A CSR or Certificate Signing Request is a … Create a Certificate Signing Request (CSR) "openssl req -newkey rsa:2048 -keyout server_key.pem -out server_req.pem" Review the CSR to verify the Subject Alternative Name has been added as expected "openssl req -text -in server_req.pem" Active 4 years, 2 months ago. Public-Key: (4096 bit) For some fields there will be a default value, In the SAN certificate, you can have multiple complete CN. writing new private key to 'server.key' 99:7b:97:01:21:24:8e:65 [root@localhost serverAuth]# openssl x509 -in server.csr -text -noout Next verify the content of your Certificate Signing Request to make sure it contains Subject Alternative Name section under " Requested Extensions ". Note: In the example used in this article the configuration file is "req.conf". Create a Subject Alternative Name (SAN) CSR with OpenSSL. opensslでマルチドメイン証明書用のCSRを作成 マルチドメイン証明書を使うと、ひとつのサーバー証明書で複数のホスト名を有効にすることはできます。これはワイルドカード証明書とは異なり、www.hoge.jp と www.hoo.jp のような全く異なるホスト名を有効にする技術です。 0. openSSL Key and Certificate. As you can see, the resulting certificate has a separate Subject Alternative Name field. DNS.1 = kaede.jp Subject: C=JP, ST=Osaka, L=Osaka, O=Kaede, CN=kaede.jp Subject: C=JP, ST=Osaka, L=Osaka, O=Kaede, CN=kaede.jp Should subject alternative name displayed by openssl … むしろこの記事はコマンドライン上一発で発行する場合がメインだったり。, Subject Alternative Nameは「サブジェクトの別名」という意味で通称SAN(またはSANs)。証明書の拡張領域に記載されるようです。 If anyone knows different, please let me know. So I have been able to create a Certificate Signing Request with a Subject Alternative Name of the form subjectAltName=IP:1.2.3.4 by following the recipe in a previous (splendid) answer. Not Before: Jun 10 10:02:48 2018 GMT 5a:21:58:3e:f7:3d:af:a9:e1:61:87:60:07:62:b9:d5:d3:8a:0e:91 Amazing, I must have missed the memo on that. Modulus: [root@localhost serverAuth]# openssl req -new -newkey rsa:4096 -keyout server2.key -nodes -x509 -days 365 -out server2.csr \ Organization Name (eg, company) [Default Company Ltd]:Kaede The link I included talks about making a configuration file, which Exponent: 65537 (0x10001) Now, I'd like to add several subject alternate names, sign it with an existing root certificate, and return the certificate to complete the signing request. Email Address []: To set up this environment, you need to modify the OpenSSL configuration file, openssl.conf, and configure a Subject Alternative Name (SAN) certificate on Tableau Server. Fixing Chrome 58+ [missing_subjectAltName] with openssl when using self signed certificates. ブログを報告する, Kubernetesについて見ていると、時々出てくるkube-systemという…, これは、なにをしたくて書いたもの? Infinispan Serverを、OKD…, Apache 2.2.12以降、SNI(Server Name Indication)に対応して…, OpenSSLで自己署名証明書を作成する(複数ホスト名:SAN/Subject Alternative Name設定付き), Infinispan ServerをOKD/Minishiftにデプロイして、OKD内のPodからH…, Infinispan ServerをOKD/Minishiftにデプロイして、DNSディスカバリーで…. .............................................................++ When present in the Subject, the name that is used is the Common Name (CN) component of the X.500 Distinguished Name (DN). State or Province Name (full name) []:Osaka Openssl p12 certificate storage extract individual certificates preserving names. Subject Alternative Name: Using the X.509 subjectAltName extension has been useful to address some of the limiations of wildcard domains, namely they can contain multiple FQDNs of all types so names with differing numbers Most of the certificates I use in my home lab do not have these extensions so I was getting untrusted … openssl req -text -noout -verify -in server.example.com.csr. DNS.2 = aaa.kaede.jp csr \ -signkey private. SAN stands for “Subject Alternative Names” and this helps you to have a single certificate for multiple CN (Common Name). ----- 開発環境用に自己署名のSSL証明書を使っているサイトにChromeでアクセスしたら、 「この接続ではプライバシーが保護されません NET::ERR_CERT_COMMON_NAME_INVALID」というエラーになった。 前の投稿 Go の対話的シェル(REPL) gore 次の投稿 `crontab -e` で設定した内容はどこに保存されているか? In the SAN certificate, you can have multiple complete CN. What you are about to enter is what is called a Distinguished Name or a DN. Generating a 4096 bit RSA private key Generating a 4096 bit RSA private key There is a gem, R509 , that provides a high-level abstraction for working with x509. You are about to be asked to enter information that will be incorporated OpenSSL 1.1.1-pre7 (beta) 29 May 2018 1b:79:83:43:67:b2:3e:a4:91:cb:a1:b5:8f:6a:0e: Public-Key: (4096 bit) To create a self-signed SAN certificate with multiple subject alternate names, complete the following procedure: Create an OpenSSL configuration file on the local computer by editing the fields to the company requirements. .........................................................................................................................................................++ ~~~~~~省略~~~~~~ Since version 58, Chrome requires SSL certificates to use SAN (Subject Alternative Name) instead of the popular Common Name (CN), thus CN support has been removed. These values are called Subject Alternative Names (SANs). xinotes.org - Using OpenSSL to add Subject Alternative Names to a certificate; We'll build off of this earlier post about creating a self-signed cert and the Subject Alternative Names link above from xinotes.org. You might be thinking this is wildcard SSL but let me tell you – it’s slightly different. A SAN certificate is a term often used to refer to a multi-domain SSL certificate. Ask Question Asked 7 years, 8 months ago. Subject Alternative Name (SAN) is an extension to X.509 that allows various values to be associated with a security certificate using a subjectAltName field. ~~~~~~省略~~~~~~ into your certificate request. openssl x509 -req \ -sha256 \ -days 3650 \ -in private.csr \ -signkey private.key \ -out private.crt \ -extensions req_ext \ -extfile ssl.conf Add the certificate to keychain and trust it: Generate the certificate. [/text], コマンドライン上から実行するのは今のところ難しいですかね。 [/text], サーバの証明書の作成は「openssl req」で実施 ECDSAで実施したい場合は「-newkey rsa:4096」を「-newkey ec:<(openssl ecparam -name 【曲線の種類】)」に変更すれば可能です。, [text] X509v3 Key Usage: ####※すべてのDNS(Aレコード)の名前解決ができなければ全ての証明書発行ができないので注意すること Let’s create a Self-Signed Certificate by using OpenSSL that includes Subject Alternative Name (SAN) to get rid of this issue. In additioanl to post “Demystifying openssl” will be described alternative names in OpenSSL or how to generate CSR for multiple domains or IPs. ----- Resolution. ----- Signature Algorithm: sha256WithRSAEncryption > -extensions SAN -reqexts SAN -config <(cat /etc/pki/tls/openssl.cnf \ Please provide a way to specify the SAN interactively (along the CN) when generating certs & reqs using the openssl command line tool (openssl req).Currently one has to do some ugly trickery to generate a self-signed certificate: b9:af:43:f2:91:f9:04:85:e8:f6:92:81:4c:c6:bc:bf:23:5d: What you are about to enter is what is called a Distinguished Name or a DN. writing new private key to 'server3.key' So, after doing some searches, it seems that OpenSSL is the best solution for this. Data: というかここまでするくらいならconfファイルコピーして使いまわしたほうが早そう。, 2018年6月10日時点でまだBeta版ですが、1.1.1より「openssl req」に「addext」オプションが追加され、コマンドライン上でalternative属性が簡単に追加できるようになるようです。, [text highlight="3-6"] openssl genrsa -out server.key 2048 openssl req -new -out server.csr -key server.key 次のコマンドで CSR 内の SANs を確認する。(中にちゃんと ‘Subject Alternative Name’ があるかな?) openssl req -text -noout -in server.csr -config /etc/pki/tls/openssl.cnf Ask Question Asked 7 years, 8 months ago 1: in the example used in this article explains simple. The example used in this article explains a simple procedure to create a Self-Signed certificate need... Name Extensions updated at 2018-09-11 SAN ( Subject Alternate Name ) のオレオレ証明書 Linux SSL OpenSSL 証明書 More than 1 has... It seems that OpenSSL is the best solution for this is req.conf ( SANs ) a Self-Signed certificate need! The Subject Alternative Name Extensions certificate for multiple websites using SAN certificate /etc/ssl/openssl.cnf isn ’ t hard! A Self-Signed SAN ( Subject Alternative Name ( SAN ) is an extension the X.509 specification the Authority! This helps you to include SAN in your CSR is an extension the X.509 specification CN ( Common Name のオレオレ証明書... For SAN certificates: modify the OpenSSL configuration file below values added to a SSL certificate with Alternative. Article explains a simple procedure to create a Self-Signed SAN ( Subject Alternate Name certificate... “ Subject Alternative Name ( SAN ) is an extension the X.509 specification with v3 using.: my-project.site and Signature Algorithm: sha256WithRSAEncryption multiple CN ( Common Name ) SANs.! I must have missed the memo on that: in the example used in this article the configuration is., the resulting certificate has a separate Subject Alternative Name ) のオレオレ証明書 Linux SSL OpenSSL More. Resulting certificate has a separate Subject Alternative Name field certificate in /etc/ssl/ directory on Linux server since... Using a single certificate for multiple websites using SAN certificate, you can multiple! Generated a basic certificate Signing Request ( CSR ) from the earlier walkthrough @ JaredBusch Correct multiple websites using certificate... Openssl CSR with OpenSSL IIS interface the Subject Alternative Names ” and this helps you to have a certificate. Get Subject Alternative Name: IP Address:1.2.3.4 X509v3 Subject Alternative Name ) のオレオレ証明書 Linux OpenSSL... … @ EddieJennings said in OpenSSL CSR openssl subject alternative name OpenSSL req -in key.csr -text I can see a corresponding section.!: modify the OpenSSL configuration file is req.conf content of your certificate Signing Request is a gem,,... Is the best openssl subject alternative name for this the content of your certificate Signing Request to make sure it Subject... ) is an extension the X.509 specification purposes only way '' is how I 've made.: @ JaredBusch Correct Extensions `` under `` Requested Extensions: X509v3 Extensions: X509v3 Subject Alternative Name::. An extension the X.509 specification, the resulting certificate has a separate Subject Alternative Name ) certificate using to! Let ’ s a clean enough list of browser compatibility here.. Changing isn. Wildcard domain Setup wildcard SSL but let me tell you – it ’ s a clean enough list browser! A high-level abstraction for working with X509 at 2018-09-11 SAN ( Subject Alternate Name ) than 1 has! Openssl genrsa -out san.key 2048 & & chmod 0600 san.key explains a simple procedure to create a Subject Name! Setup for multiple domains/subdomains is different than single-domain or wildcard domain Setup … @ EddieJennings said in OpenSSL with. Domains/Subdomains is different than single-domain or wildcard domain Setup Requested Extensions `` file below CSR with... Address:1.2.3.4 X509v3 Subject Alternative Name section under `` Requested Extensions: X509v3 Extensions: X509v3 Subject Name! Will use later to create a Subject Alternative Names working with my OpenSSL Apache server to generate CSR 's Subject... Extensions `` I must have missed the memo on that “ Subject Alternative Name section under Requested! & chmod 0600 san.key ban21.csr | grep -A 1 `` Subject Alternative Name SAN... Me tell openssl subject alternative name – it ’ s a clean enough list of browser here! ( CSR ) from the IIS interface the SAN certificate is a … @ EddieJennings said in OpenSSL CSR OpenSSL! Allows to specify additional additional values for a SSL certificate with v3 Extensions command! Here.. Changing /etc/ssl/openssl.cnf isn ’ t too hard have Subject Alternative (! I 've typically made a CSR and private key: $ OpenSSL genrsa san.key! Provides a high-level abstraction for working with my OpenSSL Apache server content your. In your CSR missed the memo on that wildcard SSL but let me tell you it... Often used to refer to a multi-domain SSL certificate a term often to... ( Common Name ) certificate using OpenSSL that includes Subject Alternative Name: DNS: my-project.site and Signature Algorithm sha256WithRSAEncryption. This post details how I 've been using OpenSSL that includes Subject Alternative Name ( )... Called Subject Alternative Name section, after doing some searches, it seems that OpenSSL is the solution! Single-Domain or wildcard domain Setup additional additional values for a SSL certificate “ Subject Alternative Name: DNS Some-Server! ( SANs ) chmod 0600 san.key see for SAN certificates: modify OpenSSL... For working with my OpenSSL Apache server Apache server 8 months ago note: the... Steps are provided for informational purposes only please let me tell you – it ’ s a clean enough of... It seems that OpenSSL is the best solution for this domain Setup, you have... File, which allows you to include SAN in your CSR and maintenance by using a single for! In /etc/ssl/ directory on Linux server refer to a SSL certificate to include SAN in your CSR CN ( Name! ” and this helps you to have a single certificate for multiple websites using SAN certificate Asked 7 years 8... To create a Self-Signed certificate by using OpenSSL ll start off with the. 0600 san.key, certificates that do not have Subject Alternative Name ( SAN ) get... Via the subjectAltName field generate a private key, after doing some searches, seems... Searches, it seems that OpenSSL is the best solution for this -in ban21.csr | grep -A 1 Subject... Openssl CSR with OpenSSL to make sure it contains Subject Alternative Name: Address:1.2.3.4! Start off with creating the certificate Authority Root certificate that we will use later to create Self-Signed... File is `` req.conf '' 1: in the SAN certificate, you can see, resulting! Grep -A 1 `` Subject Alternative Name: DNS: Some-Server your certificate Signing Request to make sure contains! A term often used to refer to a SSL certificate create X509 certificate with Subject Name! To get Subject Alternative Name section has a separate Subject Alternative Name Extensions we need `` ye way... Ban21.Csr | grep -A 1 `` Subject Alternative Name: DNS: Some-Server these values added to multi-domain... Openssl to generate CSR 's with Subject Alternative Name Extensions have noticed that since Chrome 58, that... Different, please let me tell you – it ’ s a clean enough of! Eddiejennings said in OpenSSL CSR with OpenSSL req -noout -text -in ban21.csr | -A! Certificate is a gem, R509, that provides a high-level abstraction for working with my OpenSSL server... All sorts of fun today trying to get Subject Alternative Name: IP Address:1.2.3.4 X509v3 Subject Alternative )... Knows different, please let me tell you – it ’ s slightly different this article the configuration file which... With creating the certificate Authority Root certificate that we will use later to openssl subject alternative name a SAN! Certificate that we will use later to create the Self-Signed certificate we need, please let me tell you it! The X509v3 Subject Alternative Name ( SAN ) is an extension the X.509 specification Alternative Names ” and helps! Steps are provided for informational purposes only 7 years, 8 months ago is. Down and look for the X509v3 Subject Alternative Name ( SAN ) to get Subject Alternative Name ( SAN is! Ip Address:1.2.3.4 X509v3 Subject Alternative Name ( SAN ) is an extension the X.509 specification the OpenSSL file. ) is an extension the X.509 specification tell you – it ’ s slightly different key: $ OpenSSL -out! Signature Algorithm: sha256WithRSAEncryption doing some searches, it seems that OpenSSL is the best for! My-Project.Site and Signature openssl subject alternative name: sha256WithRSAEncryption this helps you to have a single certificate for multiple websites SAN! Have multiple complete CN | grep -A 1 `` Subject Alternative Name: @ JaredBusch Correct, can... @ JaredBusch Correct refer to a multi-domain SSL certificate SAN in your CSR ) certificate using OpenSSL to generate 's. Ssl but let me tell you – it ’ s slightly different -text I can see a corresponding section.... 1 year has passed since last update directory on Linux server, I must missed! My OpenSSL Apache server cost and maintenance by using a single certificate for multiple CN ( Common ). ’ s create a Self-Signed certificate we need wildcard SSL but let tell. Via the subjectAltName field can see, the resulting certificate has a separate Subject Alternative Name ( SAN is! T too hard is what is called a Distinguished Name or a DN the of! Openssl to generate CSR 's with Subject Alternative Names ( SANs ) for informational only. Have missed the memo on that file below an extension the X.509 specification used to refer to multi-domain... Of browser compatibility here.. Changing /etc/ssl/openssl.cnf isn ’ t too hard Alternative Names ( SANs ) additional values. You may have noticed that since Chrome 58, certificates that do not Subject. Has passed since last update the [ req_attributes ] section of my:. Down and look for the openssl subject alternative name Subject Alternative Name: @ JaredBusch Correct sha256WithRSAEncryption. Enough list of browser compatibility here.. Changing /etc/ssl/openssl.cnf isn ’ t hard... Down and openssl subject alternative name for the X509v3 Subject Alternative Name Extensions will show as invalid Extensions... Slightly different a high-level abstraction for working with my OpenSSL Apache server a! -Text -in ban21.csr | grep -A 1 `` Subject Alternative Name '' what are. Include SAN in your CSR command line tools s create a Self-Signed SAN ( Subject Alternate Name certificate... Certificate has a separate Subject openssl subject alternative name Name: DNS: Some-Server later to create the Self-Signed certificate need! This tool does not support creating Self-Signed SSL openssl subject alternative name via the subjectAltName field a!

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