openssl s_client -connect example.com:443 -servername example.com The -servername flag enables SNI (Server Name Indication).
openssl crl -in root.crl -text -noout openssl verify -crl_check -CAfile root.crt -CRLfile root.crl server.crt openssl rand -base64 32 9. Conclusion OpenSSL on Windows 11 is not merely a port of a Linux utility; it is an essential cryptographic Swiss Army knife that fills gaps left by native Windows tools. Through careful selection of installation method – whether precompiled binaries for simplicity, WSL for Linux compatibility, or Git Bash for lightweight use – professionals can integrate OpenSSL seamlessly into their Windows workflows. Mastery of key generation, CSR creation, certificate conversion, and TLS testing empowers administrators to secure internal services, debug production issues, and automate certificate lifecycle management.
[alt_names] DNS.1 = myapp.local DNS.2 = www.myapp.local IP.1 = 192.168.1.100 IP.2 = 10.0.0.5
[req] distinguished_name = req_distinguished_name req_extensions = v3_req prompt = no [req_distinguished_name] CN = myapp.local
Import-Certificate -FilePath "C:\path\to\root.cer" -CertStoreLocation "Cert:\LocalMachine\Root" PowerShell can call OpenSSL directly. Example function to generate a self-signed cert for IIS testing:
openssl pkcs12 -export -out bundle.pfx -inkey private.key -in certificate.crt -certfile chain.crt Use -password pass:YourPassword to avoid interactive prompt.
openssl base64 -in certificate.crt -out cert.b64 5.1 Importing Certificates into Windows Certificate Store After converting to PKCS#12 or DER, use PowerShell or certlm.msc (Local Machine) / certmgr.msc (Current User).
openssl s_client -connect example.com:443 -servername example.com The -servername flag enables SNI (Server Name Indication).
openssl crl -in root.crl -text -noout openssl verify -crl_check -CAfile root.crt -CRLfile root.crl server.crt openssl rand -base64 32 9. Conclusion OpenSSL on Windows 11 is not merely a port of a Linux utility; it is an essential cryptographic Swiss Army knife that fills gaps left by native Windows tools. Through careful selection of installation method – whether precompiled binaries for simplicity, WSL for Linux compatibility, or Git Bash for lightweight use – professionals can integrate OpenSSL seamlessly into their Windows workflows. Mastery of key generation, CSR creation, certificate conversion, and TLS testing empowers administrators to secure internal services, debug production issues, and automate certificate lifecycle management.
[alt_names] DNS.1 = myapp.local DNS.2 = www.myapp.local IP.1 = 192.168.1.100 IP.2 = 10.0.0.5
[req] distinguished_name = req_distinguished_name req_extensions = v3_req prompt = no [req_distinguished_name] CN = myapp.local
Import-Certificate -FilePath "C:\path\to\root.cer" -CertStoreLocation "Cert:\LocalMachine\Root" PowerShell can call OpenSSL directly. Example function to generate a self-signed cert for IIS testing:
openssl pkcs12 -export -out bundle.pfx -inkey private.key -in certificate.crt -certfile chain.crt Use -password pass:YourPassword to avoid interactive prompt.
openssl base64 -in certificate.crt -out cert.b64 5.1 Importing Certificates into Windows Certificate Store After converting to PKCS#12 or DER, use PowerShell or certlm.msc (Local Machine) / certmgr.msc (Current User).
