httpd security Tips (Centos6,7,8)

1. /etc/httpd/conf/httpd.conf の DocumentRootの直前ぐらいに以下を追記する

ServerTokens Prod
ServerSignature Off
TraceEnable Off
# httproxy
RequestHeader unset Proxy
Header unset X-Powered-By
# Click Jack
Header append X-FRAME-OPTIONS "SAMEORIGIN"
# XSS
Header set X-XSS-Protection "1; mode=block"
Header set X-Content-Type-Options nosniff
#

2. /etc/httpd/conf.d/ssl.conf 中、SSLCipherSuite のところは

https://mozilla.github.io/server-side-tls/ssl-config-generator/

に httpd の version と openssl のversion を入力すると suggestionが出てくるのでそれをコピペする。例えば CentOS 8.0.1905 の場合は

httpd-2.4.37
openssl-1.1.1

なので上記を入れると https://ssl-config.mozilla.org/#server=apache&server-version=2.4.37&config=intermediate&openssl-version=1.1.1 となるので、以下を　/etc/httpd/conf.d/ssl.conf 中に入れる。

SSLProtocol             all -SSLv3 -TLSv1 -TLSv1.1
SSLCipherSuite          ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384
SSLHonorCipherOrder     off
SSLSessionTickets       off

3. httpd周りのソフト環境

RHEL5(CentOS5)  httpd-2.2.3   php-5.1.6   perl-5.8   python-2.4.3      mysql-5.0.95   
RHEL6(CentOS6)  httpd-2.2.15  php-5.3.3   perl-5.10  python-2.6.6      mysql-5.1.73     
RHEL7(CentOS7)  httpd-2.4.6   php-5.4.16  perl-5.16  python-2.7.5      mariadb-5.5.64 
RHEL8(CentOS8)  httpd-2.4.37  php-7.2.11  Perl-5.26  python-3.6 (2.7)  mariadb-10.3.11

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httpd-security

httpd security Tips (Centos6,7,8)