forked from unitoo/configurations
Merge pull request 'Add hardening/security related confs' (#5) from yamabiko/dot-files:master into master
Reviewed-on: https://gitea.it/Unitoo/dot-files/pulls/5
This commit is contained in:
commit
81aac6d6bd
7 changed files with 178 additions and 0 deletions
26
lynis/etc/lynis/custom.prf
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26
lynis/etc/lynis/custom.prf
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# Disable some tests that are not useful in cloud-based servers
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skip-test=AUTH-9286
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skip-test=PRNT-2307
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skip-test=USB-1000
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skip-test=STRG-1846
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skip-test=STRG-1840
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skip-test=PRNT-2308
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skip-test=FILE-6310
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skip-test=BOOT-5122
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skip-test=BOOT-5260
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skip-test=KRNL-5788
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skip-test=AUTH-9308
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# Disable /etc/issue checking
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skip-test=BANN-7126
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skip-test=BANN-7130
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# Disable some SSH feature checks that we intend to keep
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skip-test=SSH-7408:tcpkeepalive
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skip-test=SSH-7408:allowtcpforwarding
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skip-test=SSH-7408:compression
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skip-test=SSH-7408:port
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# Old packages
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skip-test=CUST-0810
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skip-test=CUST-0285
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1
modprobe/etc/modprobe.d/disable-ipv6.conf
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modprobe/etc/modprobe.d/disable-ipv6.conf
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install ipv6 /bin/true
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4
modprobe/etc/modprobe.d/disable-rare-protocols.conf
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modprobe/etc/modprobe.d/disable-rare-protocols.conf
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install dccp /bin/true
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install sctp /bin/true
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install rds /bin/true
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install tipc /bin/true
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9
rc.local/etc/rc.local
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rc.local/etc/rc.local
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#!/bin/bash
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# /etc/rc.local
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# file needed to correctly load kernel parameters at boot time
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# on Ubuntu (ex. to disable ipv6) without modifying grub
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/etc/sysctl.d
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/etc/init.d/procps restart
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exit 0
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62
security/etc/security/limits.conf
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security/etc/security/limits.conf
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# /etc/security/limits.conf
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#
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#This file sets the resource limits for the users logged in via PAM.
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#It does not affect resource limits of the system services.
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#
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#Also note that configuration files in /etc/security/limits.d directory,
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#which are read in alphabetical order, override the settings in this
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#file in case the domain is the same or more specific.
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#That means for example that setting a limit for wildcard domain here
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#can be overriden with a wildcard setting in a config file in the
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#subdirectory, but a user specific setting here can be overriden only
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#with a user specific setting in the subdirectory.
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#
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#Each line describes a limit for a user in the form:
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#
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#<domain> <type> <item> <value>
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#
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#Where:
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#<domain> can be:
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# - a user name
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# - a group name, with @group syntax
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# - the wildcard *, for default entry
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# - the wildcard %, can be also used with %group syntax,
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# for maxlogin limit
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#
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#<type> can have the two values:
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# - "soft" for enforcing the soft limits
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# - "hard" for enforcing hard limits
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#
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#<item> can be one of the following:
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# - core - limits the core file size (KB)
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# - data - max data size (KB)
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# - fsize - maximum filesize (KB)
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# - memlock - max locked-in-memory address space (KB)
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# - nofile - max number of open file descriptors
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# - rss - max resident set size (KB)
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# - stack - max stack size (KB)
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# - cpu - max CPU time (MIN)
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# - nproc - max number of processes
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# - as - address space limit (KB)
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# - maxlogins - max number of logins for this user
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# - maxsyslogins - max number of logins on the system
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# - priority - the priority to run user process with
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# - locks - max number of file locks the user can hold
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# - sigpending - max number of pending signals
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# - msgqueue - max memory used by POSIX message queues (bytes)
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# - nice - max nice priority allowed to raise to values: [-20, 19]
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# - rtprio - max realtime priority
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#
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#<domain> <type> <item> <value>
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#
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* soft core 0
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* hard core 0
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#* hard rss 10000
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#@student hard nproc 20
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#@faculty soft nproc 20
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#@faculty hard nproc 50
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#ftp hard nproc 0
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#@student - maxlogins 4
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# End of file
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27
ssh/etc/ssh/sshd_config
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ssh/etc/ssh/sshd_config
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HostKey /etc/ssh/ssh_host_rsa_key
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HostKey /etc/ssh/ssh_host_ecdsa_key
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HostKey /etc/ssh/ssh_host_ed25519_key
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SyslogFacility AUTHPRIV
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AllowGroups sshlogin
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PermitRootLogin WITHOUT-PASSWORD
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PubkeyAuthentication yes
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AuthorizedKeysFile .ssh/authorized_keys
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IgnoreRhosts yes
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MaxSessions 4
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MaxAuthTries 4
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ClientAliveCountMax 2
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LogLevel VERBOSE
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PasswordAuthentication no
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ChallengeResponseAuthentication no
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GSSAPIAuthentication no
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UsePAM yes
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PrintMotd no
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X11Forwarding no
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AcceptEnv LANG LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY LC_MESSAGES
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AcceptEnv LC_PAPER LC_NAME LC_ADDRESS LC_TELEPHONE LC_MEASUREMENT
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AcceptEnv LC_IDENTIFICATION LC_ALL LANGUAGE
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AcceptEnv XMODIFIERS
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Subsystem sftp /usr/lib/openssh/sftp-server
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49
sysctl/etc/sysctl.conf
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sysctl/etc/sysctl.conf
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# Hardened sysctl conf
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fs.protected_regular = 2
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fs.protected_fifos = 2
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fs.protected_hardlinks = 1
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fs.protected_symlinks = 1
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fs.suid_dumpable = 0
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kernel.core_uses_pid = 1
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kernel.ctrl-alt-del = 0
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kernel.dmesg_restrict = 1
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kernel.kptr_restrict = 2
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kernel.randomize_va_space = 2
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kernel.sysrq = 0
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kernel.unprivileged_bpf_disabled = 1
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net.core.bpf_jit_harden = 2
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net.ipv4.conf.all.accept_redirects = 0
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net.ipv4.conf.all.accept_source_route = 0
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net.ipv4.conf.all.bootp_relay = 0
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net.ipv4.conf.all.forwarding = 0
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net.ipv4.conf.all.log_martians = 1
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net.ipv4.conf.all.mc_forwarding = 0
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net.ipv4.conf.all.proxy_arp = 0
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net.ipv4.conf.all.rp_filter = 0
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net.ipv4.conf.all.send_redirects = 0
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net.ipv4.conf.default.accept_redirects = 0
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net.ipv4.conf.default.accept_source_route = 0
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net.ipv4.conf.default.log_martians = 1
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net.ipv4.icmp_echo_ignore_broadcasts = 1
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net.ipv4.icmp_ignore_bogus_error_responses = 1
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net.ipv4.tcp_syncookies = 1
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net.ipv4.tcp_timestamps = 1
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# Uncomment do disable ipv6
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#net.ipv6.conf.all.disable_ipv6=1
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#net.ipv6.conf.default.disable_ipv6=1
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#net.ipv6.conf.lo.disable_ipv6=1
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net.ipv6.conf.all.accept_redirects = 0
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net.ipv6.conf.all.accept_source_route = 0
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net.ipv6.conf.default.accept_redirects = 0
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net.ipv6.conf.default.accept_source_route = 0
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vm.swappiness = 15
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