]> git.ipfire.org Git - ipfire-2.x.git/blob - config/etc/sysctl.conf
Allow kernel to swap memory on high demand
[ipfire-2.x.git] / config / etc / sysctl.conf
1 net.ipv4.ip_forward = 1
2 net.ipv4.ip_dynaddr = 1
3
4 # Disable Path MTU Discovery
5 net.ipv4.ip_no_pmtu_disc = 1
6
7 net.ipv4.icmp_echo_ignore_broadcasts = 1
8 net.ipv4.icmp_ignore_bogus_error_responses = 1
9 net.ipv4.icmp_ratelimit = 1000
10 net.ipv4.icmp_ratemask = 6168
11
12 net.ipv4.tcp_syncookies = 1
13 net.ipv4.tcp_fin_timeout = 30
14 net.ipv4.tcp_syn_retries = 3
15 net.ipv4.tcp_synack_retries = 3
16
17 net.ipv4.conf.default.arp_filter = 1
18 net.ipv4.conf.default.rp_filter = 0
19 net.ipv4.conf.default.accept_redirects = 0
20 net.ipv4.conf.default.accept_source_route = 0
21 net.ipv4.conf.default.log_martians = 1
22
23 net.ipv4.conf.all.arp_filter = 1
24 net.ipv4.conf.all.rp_filter = 0
25 net.ipv4.conf.all.accept_redirects = 0
26 net.ipv4.conf.all.accept_source_route = 0
27 net.ipv4.conf.all.log_martians = 1
28
29 kernel.printk = 1 4 1 7
30 vm.swappiness=1
31 vm.mmap_min_addr = 4096
32 vm.min_free_kbytes = 8192
33
34 # Disable IPv6 by default.
35 net.ipv6.conf.all.disable_ipv6 = 1
36 net.ipv6.conf.default.disable_ipv6 = 1
37
38 # Enable netfilter accounting
39 net.netfilter.nf_conntrack_acct=1
40
41 # Disable netfilter on bridges.
42 net.bridge.bridge-nf-call-ip6tables = 0
43 net.bridge.bridge-nf-call-iptables = 0
44 net.bridge.bridge-nf-call-arptables = 0
45
46 # Try to keep kernel address exposures out of various /proc files (kallsyms, modules, etc).
47 kernel.kptr_restrict = 2
48
49 # Avoid kernel memory address exposures via dmesg.
50 kernel.dmesg_restrict = 1