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feat: add sshd_config, sysctl.conf, lynis custom

This commit is contained in:
Lorenzo Tucci 2021-08-22 22:13:37 +02:00
parent 6f04d0e9df
commit 36e0b962ac
3 changed files with 79 additions and 0 deletions
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13
lynis/etc/lynis/custom.prf Normal file
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# Disable some tests that are not useful in cloud-based servers
skip-test=AUTH-9286
skip-test=PRNT-2307
skip-test=USB-1000
skip-test=STRG-1846
skip-test=PRNT-2308
skip-test=FILE-6310
skip-test=SSH-7408:tcpkeepalive
skip-test=SSH-7408:allowtcpforwarding
skip-test=SSH-7408:compression
skip-test=SSH-7408:port
skip-test=BANN-7126
skip-test=BANN-7130

21
ssh/etc/ssh/sshd_config Normal file
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HostKey /etc/ssh/ssh_host_rsa_key
HostKey /etc/ssh/ssh_host_ecdsa_key
HostKey /etc/ssh/ssh_host_ed25519_key
SyslogFacility AUTHPRIV
AllowGroups sshlogin
PermitRootLogin WITHOUT-PASSWORD
PubkeyAuthentication yes
AuthorizedKeysFile .ssh/authorized_keys
IgnoreRhosts yes
PasswordAuthentication no
ChallengeResponseAuthentication no
GSSAPIAuthentication no
UsePAM yes
X11Forwarding no
AcceptEnv LANG LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY LC_MESSAGES
AcceptEnv LC_PAPER LC_NAME LC_ADDRESS LC_TELEPHONE LC_MEASUREMENT
AcceptEnv LC_IDENTIFICATION LC_ALL LANGUAGE
AcceptEnv XMODIFIERS

45
systcl/etc/sysctl.conf Normal file
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# Hardened sysctl conf
fs.protected_regular = 2
fs.protected_fifos = 2
fs.protected_hardlinks = 1
fs.protected_symlinks = 1
fs.suid_dumpable = 0
kernel.core_uses_pid = 1
kernel.ctrl-alt-del = 0
kernel.dmesg_restrict = 1
kernel.kptr_restrict = 2
kernel.randomize_va_space = 2
kernel.sysrq = 0
kernel.unprivileged_bpf_disabled = 1
net.core.bpf_jit_harden = 2
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.all.accept_source_route = 0
net.ipv4.conf.all.bootp_relay = 0
net.ipv4.conf.all.forwarding = 0
net.ipv4.conf.all.log_martians = 1
net.ipv4.conf.all.mc_forwarding = 0
net.ipv4.conf.all.proxy_arp = 0
net.ipv4.conf.all.rp_filter = 0
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.default.accept_redirects = 0
net.ipv4.conf.default.accept_source_route = 0
net.ipv4.conf.default.log_martians = 1
net.ipv4.icmp_echo_ignore_broadcasts = 1
net.ipv4.icmp_ignore_bogus_error_responses = 1
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_timestamps = 1
net.ipv6.conf.all.accept_redirects = 0
net.ipv6.conf.all.accept_source_route = 0
net.ipv6.conf.default.accept_redirects = 0
net.ipv6.conf.default.accept_source_route = 0
vm.swappiness = 15