blob: 87d036ccbb84f45e101a8ed261a259545d3e3809 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
# ----------------------------
# Kernel hardening baseline
# ----------------------------
# Kernel pointer & info leaks
kernel.kptr_restrict = 2
kernel.dmesg_restrict = 1
kernel.perf_event_paranoid = 3
# Protect against memory corruption exploits
kernel.randomize_va_space = 2
vm.mmap_min_addr = 65536
# Disable magic SysRq
kernel.sysrq = 0
# Restrict kernel logs
kernel.printk = 3 3 3 3
# Protect links & proc
fs.protected_hardlinks = 1
fs.protected_symlinks = 1
fs.protected_fifos = 2
fs.protected_regular = 2
# Disable unprivileged user namespaces (major exploit class)
kernel.unprivileged_userns_clone = 0
# Block ptrace attacks
kernel.yama.ptrace_scope = 2
# Networking hardening
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.default.accept_redirects = 0
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.default.send_redirects = 0
net.ipv4.conf.all.accept_source_route = 0
net.ipv4.conf.default.accept_source_route = 0
net.ipv4.conf.all.log_martians = 1
net.ipv4.conf.default.log_martians = 1
net.ipv4.icmp_ignore_bogus_error_responses = 1
net.ipv4.tcp_syncookies = 1
# NAT compatibility
net.ipv4.conf.all.rp_filter = 0
net.ipv4.conf.default.rp_filter = 0
net.ipv4.conf.enx00e04c2e4828.rp_filter = 0
# Disable unprivileged BPF
kernel.unprivileged_bpf_disabled = 1
# Restrict kernel tracing
kernel.ftrace_enabled = 0
|
