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Code Issues Releases Wiki Activity

make security settings more strict for postfix

This commit is contained in:
KiekerJan 2021-05-29 00:18:43 +02:00
parent 7ffc87c529
commit 5fa27b27e2
1 changed files with 7 additions and 6 deletions
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13
setup/mail-postfix.sh
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@ -126,15 +126,15 @@ tools/editconf.py /etc/postfix/main.cf \
smtpd_tls_cert_file=$STORAGE_ROOT/ssl/ssl_certificate.pem \
smtpd_tls_key_file=$STORAGE_ROOT/ssl/ssl_private_key.pem \
smtpd_tls_dh1024_param_file=$STORAGE_ROOT/ssl/dh2048.pem \
smtpd_tls_protocols="!SSLv2,!SSLv3" \
smtpd_tls_protocols="!SSLv2,!SSLv3,!TLSv1,!TLSv1.1" \
smtpd_tls_ciphers=medium \
tls_medium_cipherlist=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:DHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-SHA256:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA \
smtpd_tls_exclude_ciphers=aNULL,RC4 \
smtpd_tls_exclude_ciphers=MD5, DES, ADH, RC4, PSD, SRP, 3DES, eNULL, aNULL \
smtpd_tls_mandatory_protocols="!SSLv2,!SSLv3,!TLSv1,!TLSv1.1" \
smtpd_tls_mandatory_ciphers=high \
tls_high_cipherlist=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 \
smtpd_tls_mandatory_exclude_ciphers=aNULL,DES,3DES,MD5,DES+MD5,RC4 \
tls_preempt_cipherlist=no \
smtpd_tls_mandatory_exclude_ciphers=MD5, DES, ADH, RC4, PSD, SRP, 3DES, eNULL, aNULL \
tls_preempt_cipherlist=yes \
smtpd_tls_received_header=yes
# Add block_root_external to block mail send to root@PRIMARY_HOSTNAME. This mail address is only supposed to be used for local
@ -182,9 +182,10 @@ tools/editconf.py /etc/postfix/main.cf \
# even if we don't know if it's to the right party, than to not encrypt at all. Instead we'll
# now see notices about trusted certs. The CA file is provided by the package `ca-certificates`.
tools/editconf.py /etc/postfix/main.cf \
smtp_tls_protocols=\!SSLv2,\!SSLv3 \
smtp_tls_protocols="!SSLv2,!SSLv3,!TLSv1,!TLSv1.1" \
smtp_tls_ciphers=medium \
smtp_tls_exclude_ciphers=aNULL,RC4 \
smtp_tls_exclude_ciphers=MD5, DES, ADH, RC4, PSD, SRP, 3DES, eNULL, aNULL \
smtp_tls_mandatory_exclude_ciphers = MD5, DES, ADH, RC4, PSD, SRP, 3DES, eNULL, aNULL \
smtp_tls_security_level=dane \
smtp_dns_support_level=dnssec \
smtp_tls_mandatory_protocols="!SSLv2,!SSLv3,!TLSv1,!TLSv1.1" \