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1. set up a CA server [root @ zzu ~] # Yuminstallopenssl * [root @ zzu ~] # Cd/etc/pki/[root @ zzupki] # vimtls/openssl. cnf45dir/etc/pki/CA88countryNameop... 1. set up a CA server [root @ zzu ~] # Yum install openssl * [root @ zzu ~] # Cd/etc/pki/[root @ zzu pki] # vim tls/openssl. cnf45 dir =/etc/pki/CA88 countryName = optional 89 environment = optional 90 organizationName = optional136 countryName_default = CN some default options: 141 environment = beijing some default options: 144 localityN

the following command: 123456)Example: OpenSSL x509-req-days 10000-shal-extensions v3_ca-signkey private/ca.key.pem-in private/ca.csr-out certs/ca.cerX509 issuing the certificate of the Order-req Certificate Input Request-days Certificate Valid days, here is 10,000 days-shal Certificate Digest algorithm, here is the SHA1 algorithm-extensions adding extensions by the OpenSSL profile V3_ca item-signkey self-signed key, here is Private/ca.key.pem (Root

(Connect to the Sendmail network, and ensure security (on) 5. Configure STARTTLS1. generate an authority[Root @ mail ~] # Cd/etc/pki/[Root @ mail pki] # vim tls/openssl. cnf[Root @ mail CA] # pwd/Etc/pki/CA[Root @ mail CA] # mkdir crl certs newcerts[Root @ mail CA] # touch index.txt serial[Root @ mail CA] # echo "01"> serial[Root @ mail CA] # openssl genrsa 1024> private/cakey. pemGenerating RSA private key, 1024 bit long modulus......................

Let's Encrypt to website plus HTTPS full guide 2016A period of time in the Beijing Unicom 3G Mobile network, found that their site was unicom hijacked injected into the disgusting charge of the phone, decided to let my website forced use of HTTPS, avoid ISP hijacking.Some doubts before using HTTPSIt's 2016, and using HTTPS is not as expensive as it was a few years ago. Of course, I also understand a circle to eliminate their own doubts, mainly: My site (a simple blog) may not be necessa

1. Set up a CA Server [root @ zzu ~] # Yum install openssl * [root @ zzu ~] # Cd/etc/pki/[root @ zzu pki] # vim tls/openssl. cnf45 dir =/etc/pki/CA88 countryName = optional 89 Environment = optional 90 organizationName = optional136 countryName_default = CN some default options: 141 environment = beijing some default options: 144 localityName_default = beijing [root @ zzu pki] # cd CA [root @ zzu CA] # mkdir certs newcerts crl create three directories

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