Arpad Krejczinger
5e714f4e45
- config/ssh/sshd_config_hardening: Enhanced SSH security settings - config/ssh/banner: Legal warning banner for SSH connections - config/sysctl/99-security.conf: Kernel network and memory protection parameters - Includes deployment instructions for system-level hardening
36 lines
1.1 KiB
Plaintext
36 lines
1.1 KiB
Plaintext
# Kernel Security Parameters for Homelab
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# Deploy to: /etc/sysctl.d/99-security.conf
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#
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# Setup commands:
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# sudo cp config/sysctl/99-security.conf /etc/sysctl.d/
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# sudo sysctl -p /etc/sysctl.d/99-security.conf
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# Network security
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net.ipv4.conf.default.rp_filter = 1
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net.ipv4.conf.all.rp_filter = 1
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net.ipv4.ip_forward = 0
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net.ipv4.conf.all.accept_source_route = 0
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net.ipv4.conf.default.accept_source_route = 0
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net.ipv4.conf.all.accept_redirects = 0
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net.ipv4.conf.default.accept_redirects = 0
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net.ipv4.conf.all.secure_redirects = 0
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net.ipv4.conf.default.secure_redirects = 0
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net.ipv4.conf.all.send_redirects = 0
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net.ipv4.conf.default.send_redirects = 0
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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_max_syn_backlog = 2048
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net.ipv4.tcp_syn_retries = 3
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net.ipv4.tcp_synack_retries = 3
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# IPv6 security (if enabled)
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net.ipv6.conf.default.accept_redirects = 0
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net.ipv6.conf.all.accept_redirects = 0
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net.ipv6.conf.default.accept_source_route = 0
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net.ipv6.conf.all.accept_source_route = 0
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# Memory protection
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kernel.dmesg_restrict = 1
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kernel.kptr_restrict = 1
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kernel.yama.ptrace_scope = 1 |