1 | # |
---|
2 | # /etc/sysctl.conf - Configuration file for setting system variables |
---|
3 | # See /etc/sysctl.d/ for additonal system variables |
---|
4 | # See sysctl.conf (5) for information. |
---|
5 | # |
---|
6 | |
---|
7 | #kernel.domainname = example.com |
---|
8 | |
---|
9 | # Uncomment the following to stop low-level messages on console |
---|
10 | #kernel.printk = 4 4 1 7 |
---|
11 | |
---|
12 | ##############################################################3 |
---|
13 | # Functions previously found in netbase |
---|
14 | # |
---|
15 | |
---|
16 | # Uncomment the next two lines to enable Spoof protection (reverse-path filter) |
---|
17 | # Turn on Source Address Verification in all interfaces to |
---|
18 | # prevent some spoofing attacks |
---|
19 | #net.ipv4.conf.default.rp_filter=1 |
---|
20 | #net.ipv4.conf.all.rp_filter=1 |
---|
21 | |
---|
22 | # Uncomment the next line to enable TCP/IP SYN cookies |
---|
23 | # This disables TCP Window Scaling (http://lkml.org/lkml/2008/2/5/167), |
---|
24 | # and is not recommended. |
---|
25 | #net.ipv4.tcp_syncookies=1 |
---|
26 | |
---|
27 | # Uncomment the next line to enable packet forwarding for IPv4 |
---|
28 | net.ipv4.ip_forward=1 |
---|
29 | |
---|
30 | # Uncomment the next line to enable packet forwarding for IPv6 |
---|
31 | #net.ipv6.conf.all.forwarding=1 |
---|
32 | |
---|
33 | |
---|
34 | ################################################################### |
---|
35 | # Additional settings - these settings can improve the network |
---|
36 | # security of the host and prevent against some network attacks |
---|
37 | # including spoofing attacks and man in the middle attacks through |
---|
38 | # redirection. Some network environments, however, require that these |
---|
39 | # settings are disabled so review and enable them as needed. |
---|
40 | # |
---|
41 | # Ignore ICMP broadcasts |
---|
42 | #net.ipv4.icmp_echo_ignore_broadcasts = 1 |
---|
43 | # |
---|
44 | # Ignore bogus ICMP errors |
---|
45 | #net.ipv4.icmp_ignore_bogus_error_responses = 1 |
---|
46 | # |
---|
47 | # Do not accept ICMP redirects (prevent MITM attacks) |
---|
48 | #net.ipv4.conf.all.accept_redirects = 0 |
---|
49 | #net.ipv6.conf.all.accept_redirects = 0 |
---|
50 | # _or_ |
---|
51 | # Accept ICMP redirects only for gateways listed in our default |
---|
52 | # gateway list (enabled by default) |
---|
53 | # net.ipv4.conf.all.secure_redirects = 1 |
---|
54 | # |
---|
55 | # Do not send ICMP redirects (we are not a router) |
---|
56 | #net.ipv4.conf.all.send_redirects = 0 |
---|
57 | # |
---|
58 | # Do not accept IP source route packets (we are not a router) |
---|
59 | #net.ipv4.conf.all.accept_source_route = 0 |
---|
60 | #net.ipv6.conf.all.accept_source_route = 0 |
---|
61 | # |
---|
62 | # Log Martian Packets |
---|
63 | #net.ipv4.conf.all.log_martians = 1 |
---|
64 | # |
---|
65 | # The contents of /proc/<pid>/maps and smaps files are only visible to |
---|
66 | # readers that are allowed to ptrace() the process |
---|
67 | # kernel.maps_protect = 1 |
---|