ubuntu setting system variables
0
I am trying to protect my server as below system variables
net.ipv4.icmp_echo_ignore_all=1
# IP Spoofing protection
net.ipv4.conf.all.rp_filter=1
net.ipv4.conf.default.rp_filter=1
#Ignore ICMP broadcast requests
net.ipv4.icmp_echo_ignore_broadcasts=1
# Disable source packet routing
net.ipv4.conf.all.accept_source_route=0
net.ipv6.conf.all.accept_source_route=0
net.ipv4.conf.default.accept_source_route=0
net.ipv6.conf.default.accept_source_route=0
# Ignore send redirects
net.ipv4.conf.all.send_redirects=0
net.ipv4.conf.default.send_redirects=0
# Block SYN attacks
net.ipv4.tcp_syncookies=1
net.ipv4.tcp_max_syn_backlog=2048
net.ipv4.tcp_synack_retries=2
net.ipv4.tcp_syn_retries=5
# Log Martians
net.ipv4.conf.all.log_martians=1
net.ipv4.icmp_ignore_bogus_error_responses=1
# Ignore ICMP redirects
net.ipv4.conf.all.accept_redirects=0
net.ipv6.conf.all.accept_redirects=0
net.ipv4.conf.default.accept_redirects=0
net.ipv6.conf.default.accept_redirects=0
# Ignore Directed pings
net.ipv4.icmp_echo_ignore_all=1
Image:
But I get some error happen when I applied the rules.
sysctl: cannot stat /proc/sys/net/ipv4/conf/all/rp_filter: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/default/rp_filter: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/all/accept_source_route: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv6/conf/all/accept_source_route: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/default/accept_source_route: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv6/conf/default/accept_source_route: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/all/send_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/default/send_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/tcp_syncookies: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/tcp_max_syn_backlog: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/tcp_synack_retries: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/tcp_syn_retries: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/all/log_martians: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/all/accept_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv6/conf/all/accept_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/default/accept_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv6/conf/default/accept_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/icmp_echo_ignore_all: No such file or directory
Error images:
Here cat -A /etc/sysctl.conf
net.ipv4.icmp_echo_ignore_all=1$
# IP Spoofing protection$
M-bM-^@M-^Knet.ipv4.conf.all.rp_filter=1$
M-bM-^@M-^Knet.ipv4.conf.default.rp_filter=1$
#Ignore ICMP broadcast requests$
M-bM-^@M-^Knet.ipv4.icmp_echo_ignore_broadcasts=1$
# Disable source packet routing$
M-bM-^@M-^Knet.ipv4.conf.all.accept_source_route=0$
M-bM-^@M-^Knet.ipv6.conf.all.accept_source_route=0$
M-bM-^@M-^Knet.ipv4.conf.default.accept_source_route=0$
M-bM-^@M-^Knet.ipv6.conf.default.accept_source_route=0$
# Ignore send redirects$
M-bM-^@M-^Knet.ipv4.conf.all.send_redirects=0$
M-bM-^@M-^Knet.ipv4.conf.default.send_redirects=0$
# Block SYN attacks$
M-bM-^@M-^Knet.ipv4.tcp_syncookies=1$
M-bM-^@M-^Knet.ipv4.tcp_max_syn_backlog=2048$
M-bM-^@M-^Knet.ipv4.tcp_synack_retries=2$
M-bM-^@M-^Knet.ipv4.tcp_syn_retries=5$
# Log Martians$
M-bM-^@M-^Knet.ipv4.conf.all.log_martians=1$
M-bM-^@M-^Knet.ipv4.icmp_ignore_bogus_error_responses=1$
# Ignore ICMP redirects$
M-bM-^@M-^Knet.ipv4.conf.all.accept_redirects=0$
M-bM-^@M-^Knet.ipv6.conf.all.accept_redirects=0$
M-bM-^@M-^Knet.ipv4.conf.default.accept_redirects=0$
M-bM-^@M-^Knet.ipv6.conf.default.accept_redirects=0$
# Ignore Directed pings$
M-bM-^@M-^Knet.ipv4.icmp_echo_ignore_all=1$
root@ubuntu-s-2vcpu-4gb-lon1-01:/etc#
14.04 server xubuntu
asked Dec 27 '18 at 15:03
Heng SopheakHeng Sopheak
1034
|
show 4 more comments
0
I am trying to protect my server as below system variables
net.ipv4.icmp_echo_ignore_all=1
# IP Spoofing protection
net.ipv4.conf.all.rp_filter=1
net.ipv4.conf.default.rp_filter=1
#Ignore ICMP broadcast requests
net.ipv4.icmp_echo_ignore_broadcasts=1
# Disable source packet routing
net.ipv4.conf.all.accept_source_route=0
net.ipv6.conf.all.accept_source_route=0
net.ipv4.conf.default.accept_source_route=0
net.ipv6.conf.default.accept_source_route=0
# Ignore send redirects
net.ipv4.conf.all.send_redirects=0
net.ipv4.conf.default.send_redirects=0
# Block SYN attacks
net.ipv4.tcp_syncookies=1
net.ipv4.tcp_max_syn_backlog=2048
net.ipv4.tcp_synack_retries=2
net.ipv4.tcp_syn_retries=5
# Log Martians
net.ipv4.conf.all.log_martians=1
net.ipv4.icmp_ignore_bogus_error_responses=1
# Ignore ICMP redirects
net.ipv4.conf.all.accept_redirects=0
net.ipv6.conf.all.accept_redirects=0
net.ipv4.conf.default.accept_redirects=0
net.ipv6.conf.default.accept_redirects=0
# Ignore Directed pings
net.ipv4.icmp_echo_ignore_all=1
Image:
But I get some error happen when I applied the rules.
sysctl: cannot stat /proc/sys/net/ipv4/conf/all/rp_filter: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/default/rp_filter: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/all/accept_source_route: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv6/conf/all/accept_source_route: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/default/accept_source_route: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv6/conf/default/accept_source_route: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/all/send_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/default/send_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/tcp_syncookies: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/tcp_max_syn_backlog: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/tcp_synack_retries: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/tcp_syn_retries: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/all/log_martians: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/all/accept_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv6/conf/all/accept_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/default/accept_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv6/conf/default/accept_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/icmp_echo_ignore_all: No such file or directory
Error images:
Here cat -A /etc/sysctl.conf
net.ipv4.icmp_echo_ignore_all=1$
# IP Spoofing protection$
M-bM-^@M-^Knet.ipv4.conf.all.rp_filter=1$
M-bM-^@M-^Knet.ipv4.conf.default.rp_filter=1$
#Ignore ICMP broadcast requests$
M-bM-^@M-^Knet.ipv4.icmp_echo_ignore_broadcasts=1$
# Disable source packet routing$
M-bM-^@M-^Knet.ipv4.conf.all.accept_source_route=0$
M-bM-^@M-^Knet.ipv6.conf.all.accept_source_route=0$
M-bM-^@M-^Knet.ipv4.conf.default.accept_source_route=0$
M-bM-^@M-^Knet.ipv6.conf.default.accept_source_route=0$
# Ignore send redirects$
M-bM-^@M-^Knet.ipv4.conf.all.send_redirects=0$
M-bM-^@M-^Knet.ipv4.conf.default.send_redirects=0$
# Block SYN attacks$
M-bM-^@M-^Knet.ipv4.tcp_syncookies=1$
M-bM-^@M-^Knet.ipv4.tcp_max_syn_backlog=2048$
M-bM-^@M-^Knet.ipv4.tcp_synack_retries=2$
M-bM-^@M-^Knet.ipv4.tcp_syn_retries=5$
# Log Martians$
M-bM-^@M-^Knet.ipv4.conf.all.log_martians=1$
M-bM-^@M-^Knet.ipv4.icmp_ignore_bogus_error_responses=1$
# Ignore ICMP redirects$
M-bM-^@M-^Knet.ipv4.conf.all.accept_redirects=0$
M-bM-^@M-^Knet.ipv6.conf.all.accept_redirects=0$
M-bM-^@M-^Knet.ipv4.conf.default.accept_redirects=0$
M-bM-^@M-^Knet.ipv6.conf.default.accept_redirects=0$
# Ignore Directed pings$
M-bM-^@M-^Knet.ipv4.icmp_echo_ignore_all=1$
root@ubuntu-s-2vcpu-4gb-lon1-01:/etc#
14.04 server xubuntu
asked Dec 27 '18 at 15:03
Heng SopheakHeng Sopheak
1034
Do those files exist and how are you changing these values? Please remove the spaces between thevariablesand=andvalue!
– George Udosen
Dec 27 '18 at 15:08
I did not change those I check on rp_filter file I see 1 numer value eixsting there but I don't know why I get those error messages
– Heng Sopheak
Dec 27 '18 at 15:13
Remove the spaces and see if the error goes away! Let thisnet.ipv4.icmp_echo_ignore_broadcasts = 1be thisnet.ipv4.icmp_echo_ignore_broadcasts=1.
– George Udosen
Dec 27 '18 at 15:14
You mean remove the space between one block to another block right example: # Block SYN attacks to # Log Martians right?
– Heng Sopheak
Dec 27 '18 at 15:16
No let me post a simple answer so you can follow! And are you adding them manuallly or from a script?
– George Udosen
Dec 27 '18 at 15:17
|
show 4 more comments
0
0
0
I am trying to protect my server as below system variables
net.ipv4.icmp_echo_ignore_all=1
# IP Spoofing protection
net.ipv4.conf.all.rp_filter=1
net.ipv4.conf.default.rp_filter=1
#Ignore ICMP broadcast requests
net.ipv4.icmp_echo_ignore_broadcasts=1
# Disable source packet routing
net.ipv4.conf.all.accept_source_route=0
net.ipv6.conf.all.accept_source_route=0
net.ipv4.conf.default.accept_source_route=0
net.ipv6.conf.default.accept_source_route=0
# Ignore send redirects
net.ipv4.conf.all.send_redirects=0
net.ipv4.conf.default.send_redirects=0
# Block SYN attacks
net.ipv4.tcp_syncookies=1
net.ipv4.tcp_max_syn_backlog=2048
net.ipv4.tcp_synack_retries=2
net.ipv4.tcp_syn_retries=5
# Log Martians
net.ipv4.conf.all.log_martians=1
net.ipv4.icmp_ignore_bogus_error_responses=1
# Ignore ICMP redirects
net.ipv4.conf.all.accept_redirects=0
net.ipv6.conf.all.accept_redirects=0
net.ipv4.conf.default.accept_redirects=0
net.ipv6.conf.default.accept_redirects=0
# Ignore Directed pings
net.ipv4.icmp_echo_ignore_all=1
Image:
But I get some error happen when I applied the rules.
sysctl: cannot stat /proc/sys/net/ipv4/conf/all/rp_filter: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/default/rp_filter: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/all/accept_source_route: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv6/conf/all/accept_source_route: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/default/accept_source_route: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv6/conf/default/accept_source_route: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/all/send_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/default/send_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/tcp_syncookies: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/tcp_max_syn_backlog: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/tcp_synack_retries: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/tcp_syn_retries: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/all/log_martians: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/all/accept_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv6/conf/all/accept_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/default/accept_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv6/conf/default/accept_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/icmp_echo_ignore_all: No such file or directory
Error images:
Here cat -A /etc/sysctl.conf
net.ipv4.icmp_echo_ignore_all=1$
# IP Spoofing protection$
M-bM-^@M-^Knet.ipv4.conf.all.rp_filter=1$
M-bM-^@M-^Knet.ipv4.conf.default.rp_filter=1$
#Ignore ICMP broadcast requests$
M-bM-^@M-^Knet.ipv4.icmp_echo_ignore_broadcasts=1$
# Disable source packet routing$
M-bM-^@M-^Knet.ipv4.conf.all.accept_source_route=0$
M-bM-^@M-^Knet.ipv6.conf.all.accept_source_route=0$
M-bM-^@M-^Knet.ipv4.conf.default.accept_source_route=0$
M-bM-^@M-^Knet.ipv6.conf.default.accept_source_route=0$
# Ignore send redirects$
M-bM-^@M-^Knet.ipv4.conf.all.send_redirects=0$
M-bM-^@M-^Knet.ipv4.conf.default.send_redirects=0$
# Block SYN attacks$
M-bM-^@M-^Knet.ipv4.tcp_syncookies=1$
M-bM-^@M-^Knet.ipv4.tcp_max_syn_backlog=2048$
M-bM-^@M-^Knet.ipv4.tcp_synack_retries=2$
M-bM-^@M-^Knet.ipv4.tcp_syn_retries=5$
# Log Martians$
M-bM-^@M-^Knet.ipv4.conf.all.log_martians=1$
M-bM-^@M-^Knet.ipv4.icmp_ignore_bogus_error_responses=1$
# Ignore ICMP redirects$
M-bM-^@M-^Knet.ipv4.conf.all.accept_redirects=0$
M-bM-^@M-^Knet.ipv6.conf.all.accept_redirects=0$
M-bM-^@M-^Knet.ipv4.conf.default.accept_redirects=0$
M-bM-^@M-^Knet.ipv6.conf.default.accept_redirects=0$
# Ignore Directed pings$
M-bM-^@M-^Knet.ipv4.icmp_echo_ignore_all=1$
root@ubuntu-s-2vcpu-4gb-lon1-01:/etc#
14.04 server xubuntu
asked Dec 27 '18 at 15:03
Heng SopheakHeng Sopheak
1034
I am trying to protect my server as below system variables
net.ipv4.icmp_echo_ignore_all=1
# IP Spoofing protection
net.ipv4.conf.all.rp_filter=1
net.ipv4.conf.default.rp_filter=1
#Ignore ICMP broadcast requests
net.ipv4.icmp_echo_ignore_broadcasts=1
# Disable source packet routing
net.ipv4.conf.all.accept_source_route=0
net.ipv6.conf.all.accept_source_route=0
net.ipv4.conf.default.accept_source_route=0
net.ipv6.conf.default.accept_source_route=0
# Ignore send redirects
net.ipv4.conf.all.send_redirects=0
net.ipv4.conf.default.send_redirects=0
# Block SYN attacks
net.ipv4.tcp_syncookies=1
net.ipv4.tcp_max_syn_backlog=2048
net.ipv4.tcp_synack_retries=2
net.ipv4.tcp_syn_retries=5
# Log Martians
net.ipv4.conf.all.log_martians=1
net.ipv4.icmp_ignore_bogus_error_responses=1
# Ignore ICMP redirects
net.ipv4.conf.all.accept_redirects=0
net.ipv6.conf.all.accept_redirects=0
net.ipv4.conf.default.accept_redirects=0
net.ipv6.conf.default.accept_redirects=0
# Ignore Directed pings
net.ipv4.icmp_echo_ignore_all=1
Image:
But I get some error happen when I applied the rules.
sysctl: cannot stat /proc/sys/net/ipv4/conf/all/rp_filter: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/default/rp_filter: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/all/accept_source_route: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv6/conf/all/accept_source_route: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/default/accept_source_route: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv6/conf/default/accept_source_route: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/all/send_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/default/send_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/tcp_syncookies: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/tcp_max_syn_backlog: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/tcp_synack_retries: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/tcp_syn_retries: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/all/log_martians: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/all/accept_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv6/conf/all/accept_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/conf/default/accept_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv6/conf/default/accept_redirects: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv4/icmp_echo_ignore_all: No such file or directory
Error images:
Here cat -A /etc/sysctl.conf
net.ipv4.icmp_echo_ignore_all=1$
# IP Spoofing protection$
M-bM-^@M-^Knet.ipv4.conf.all.rp_filter=1$
M-bM-^@M-^Knet.ipv4.conf.default.rp_filter=1$
#Ignore ICMP broadcast requests$
M-bM-^@M-^Knet.ipv4.icmp_echo_ignore_broadcasts=1$
# Disable source packet routing$
M-bM-^@M-^Knet.ipv4.conf.all.accept_source_route=0$
M-bM-^@M-^Knet.ipv6.conf.all.accept_source_route=0$
M-bM-^@M-^Knet.ipv4.conf.default.accept_source_route=0$
M-bM-^@M-^Knet.ipv6.conf.default.accept_source_route=0$
# Ignore send redirects$
M-bM-^@M-^Knet.ipv4.conf.all.send_redirects=0$
M-bM-^@M-^Knet.ipv4.conf.default.send_redirects=0$
# Block SYN attacks$
M-bM-^@M-^Knet.ipv4.tcp_syncookies=1$
M-bM-^@M-^Knet.ipv4.tcp_max_syn_backlog=2048$
M-bM-^@M-^Knet.ipv4.tcp_synack_retries=2$
M-bM-^@M-^Knet.ipv4.tcp_syn_retries=5$
# Log Martians$
M-bM-^@M-^Knet.ipv4.conf.all.log_martians=1$
M-bM-^@M-^Knet.ipv4.icmp_ignore_bogus_error_responses=1$
# Ignore ICMP redirects$
M-bM-^@M-^Knet.ipv4.conf.all.accept_redirects=0$
M-bM-^@M-^Knet.ipv6.conf.all.accept_redirects=0$
M-bM-^@M-^Knet.ipv4.conf.default.accept_redirects=0$
M-bM-^@M-^Knet.ipv6.conf.default.accept_redirects=0$
# Ignore Directed pings$
M-bM-^@M-^Knet.ipv4.icmp_echo_ignore_all=1$
root@ubuntu-s-2vcpu-4gb-lon1-01:/etc#
14.04 server xubuntu
14.04 server xubuntu
asked Dec 27 '18 at 15:03
Heng SopheakHeng Sopheak
1034
asked Dec 27 '18 at 15:03
Heng SopheakHeng Sopheak
1034
edited Dec 27 '18 at 15:52
Heng Sopheak
asked Dec 27 '18 at 15:03
Heng SopheakHeng Sopheak
1034
asked Dec 27 '18 at 15:03
Heng SopheakHeng Sopheak
1034
asked Dec 27 '18 at 15:03
Heng SopheakHeng Sopheak
1034
1034
Do those files exist and how are you changing these values? Please remove the spaces between thevariablesand=andvalue!
– George Udosen
Dec 27 '18 at 15:08
I did not change those I check on rp_filter file I see 1 numer value eixsting there but I don't know why I get those error messages
– Heng Sopheak
Dec 27 '18 at 15:13
Remove the spaces and see if the error goes away! Let thisnet.ipv4.icmp_echo_ignore_broadcasts = 1be thisnet.ipv4.icmp_echo_ignore_broadcasts=1.
– George Udosen
Dec 27 '18 at 15:14
You mean remove the space between one block to another block right example: # Block SYN attacks to # Log Martians right?
– Heng Sopheak
Dec 27 '18 at 15:16
No let me post a simple answer so you can follow! And are you adding them manuallly or from a script?
– George Udosen
Dec 27 '18 at 15:17
|
show 4 more comments
Do those files exist and how are you changing these values? Please remove the spaces between thevariablesand=andvalue!
– George Udosen
Dec 27 '18 at 15:08
I did not change those I check on rp_filter file I see 1 numer value eixsting there but I don't know why I get those error messages
– Heng Sopheak
Dec 27 '18 at 15:13
Remove the spaces and see if the error goes away! Let thisnet.ipv4.icmp_echo_ignore_broadcasts = 1be thisnet.ipv4.icmp_echo_ignore_broadcasts=1.
– George Udosen
Dec 27 '18 at 15:14
You mean remove the space between one block to another block right example: # Block SYN attacks to # Log Martians right?
– Heng Sopheak
Dec 27 '18 at 15:16
No let me post a simple answer so you can follow! And are you adding them manuallly or from a script?
– George Udosen
Dec 27 '18 at 15:17
Do those files exist and how are you changing these values? Please remove the spaces between the
variables and = and value!– George Udosen
Dec 27 '18 at 15:08
Do those files exist and how are you changing these values? Please remove the spaces between the
variables and = and value!– George Udosen
Dec 27 '18 at 15:08
I did not change those I check on rp_filter file I see 1 numer value eixsting there but I don't know why I get those error messages
– Heng Sopheak
Dec 27 '18 at 15:13
I did not change those I check on rp_filter file I see 1 numer value eixsting there but I don't know why I get those error messages
– Heng Sopheak
Dec 27 '18 at 15:13
Remove the spaces and see if the error goes away! Let this
net.ipv4.icmp_echo_ignore_broadcasts = 1 be this net.ipv4.icmp_echo_ignore_broadcasts=1.– George Udosen
Dec 27 '18 at 15:14
Remove the spaces and see if the error goes away! Let this
net.ipv4.icmp_echo_ignore_broadcasts = 1 be this net.ipv4.icmp_echo_ignore_broadcasts=1.– George Udosen
Dec 27 '18 at 15:14
You mean remove the space between one block to another block right example: # Block SYN attacks to # Log Martians right?
– Heng Sopheak
Dec 27 '18 at 15:16
You mean remove the space between one block to another block right example: # Block SYN attacks to # Log Martians right?
– Heng Sopheak
Dec 27 '18 at 15:16
No let me post a simple answer so you can follow! And are you adding them manuallly or from a script?
– George Udosen
Dec 27 '18 at 15:17
No let me post a simple answer so you can follow! And are you adding them manuallly or from a script?
– George Udosen
Dec 27 '18 at 15:17
|
show 4 more comments
1 Answer
1
active
oldest
votes
2
Rather than
net.ipv4.icmp_echo_ignore_broadcasts = 1
Change each line so no spaces exists between variables and the values, like so
net.ipv4.icmp_echo_ignore_broadcasts=1
answered Dec 27 '18 at 15:18
George UdosenGeorge Udosen
20.5k94467
I update new one as you see i update the question but still the same error
– Heng Sopheak
Dec 27 '18 at 15:23
...man sysctl.confsays "whitespace before and after a token or value is ignored" though?
– steeldriver
Dec 27 '18 at 15:23
I update error output please help to check it and those setting I try to clean space also but pass it to some text editor.
– Heng Sopheak
Dec 27 '18 at 15:28
Let me try to track down the error!
– George Udosen
Dec 27 '18 at 15:31
add a comment |
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1 Answer
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active
oldest
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
2
Rather than
net.ipv4.icmp_echo_ignore_broadcasts = 1
Change each line so no spaces exists between variables and the values, like so
net.ipv4.icmp_echo_ignore_broadcasts=1
answered Dec 27 '18 at 15:18
George UdosenGeorge Udosen
20.5k94467
I update new one as you see i update the question but still the same error
– Heng Sopheak
Dec 27 '18 at 15:23
...man sysctl.confsays "whitespace before and after a token or value is ignored" though?
– steeldriver
Dec 27 '18 at 15:23
I update error output please help to check it and those setting I try to clean space also but pass it to some text editor.
– Heng Sopheak
Dec 27 '18 at 15:28
Let me try to track down the error!
– George Udosen
Dec 27 '18 at 15:31
add a comment |
2
Rather than
net.ipv4.icmp_echo_ignore_broadcasts = 1
Change each line so no spaces exists between variables and the values, like so
net.ipv4.icmp_echo_ignore_broadcasts=1
answered Dec 27 '18 at 15:18
George UdosenGeorge Udosen
20.5k94467
I update new one as you see i update the question but still the same error
– Heng Sopheak
Dec 27 '18 at 15:23
...man sysctl.confsays "whitespace before and after a token or value is ignored" though?
– steeldriver
Dec 27 '18 at 15:23
I update error output please help to check it and those setting I try to clean space also but pass it to some text editor.
– Heng Sopheak
Dec 27 '18 at 15:28
Let me try to track down the error!
– George Udosen
Dec 27 '18 at 15:31
add a comment |
2
2
2
Rather than
net.ipv4.icmp_echo_ignore_broadcasts = 1
Change each line so no spaces exists between variables and the values, like so
net.ipv4.icmp_echo_ignore_broadcasts=1
answered Dec 27 '18 at 15:18
George UdosenGeorge Udosen
20.5k94467
Rather than
net.ipv4.icmp_echo_ignore_broadcasts = 1
Change each line so no spaces exists between variables and the values, like so
net.ipv4.icmp_echo_ignore_broadcasts=1
answered Dec 27 '18 at 15:18
George UdosenGeorge Udosen
20.5k94467
answered Dec 27 '18 at 15:18
George UdosenGeorge Udosen
20.5k94467
answered Dec 27 '18 at 15:18
George UdosenGeorge Udosen
20.5k94467
answered Dec 27 '18 at 15:18
George UdosenGeorge Udosen
20.5k94467
20.5k94467
I update new one as you see i update the question but still the same error
– Heng Sopheak
Dec 27 '18 at 15:23
...man sysctl.confsays "whitespace before and after a token or value is ignored" though?
– steeldriver
Dec 27 '18 at 15:23
I update error output please help to check it and those setting I try to clean space also but pass it to some text editor.
– Heng Sopheak
Dec 27 '18 at 15:28
Let me try to track down the error!
– George Udosen
Dec 27 '18 at 15:31
add a comment |
I update new one as you see i update the question but still the same error
– Heng Sopheak
Dec 27 '18 at 15:23
...man sysctl.confsays "whitespace before and after a token or value is ignored" though?
– steeldriver
Dec 27 '18 at 15:23
I update error output please help to check it and those setting I try to clean space also but pass it to some text editor.
– Heng Sopheak
Dec 27 '18 at 15:28
Let me try to track down the error!
– George Udosen
Dec 27 '18 at 15:31
I update new one as you see i update the question but still the same error
– Heng Sopheak
Dec 27 '18 at 15:23
I update new one as you see i update the question but still the same error
– Heng Sopheak
Dec 27 '18 at 15:23
...
man sysctl.conf says "whitespace before and after a token or value is ignored" though?– steeldriver
Dec 27 '18 at 15:23
...
man sysctl.conf says "whitespace before and after a token or value is ignored" though?– steeldriver
Dec 27 '18 at 15:23
I update error output please help to check it and those setting I try to clean space also but pass it to some text editor.
– Heng Sopheak
Dec 27 '18 at 15:28
I update error output please help to check it and those setting I try to clean space also but pass it to some text editor.
– Heng Sopheak
Dec 27 '18 at 15:28
Let me try to track down the error!
– George Udosen
Dec 27 '18 at 15:31
Let me try to track down the error!
– George Udosen
Dec 27 '18 at 15:31
add a comment |
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Do those files exist and how are you changing these values? Please remove the spaces between the
variablesand=andvalue!– George Udosen
Dec 27 '18 at 15:08
I did not change those I check on rp_filter file I see 1 numer value eixsting there but I don't know why I get those error messages
– Heng Sopheak
Dec 27 '18 at 15:13
Remove the spaces and see if the error goes away! Let this
net.ipv4.icmp_echo_ignore_broadcasts = 1be thisnet.ipv4.icmp_echo_ignore_broadcasts=1.– George Udosen
Dec 27 '18 at 15:14
You mean remove the space between one block to another block right example: # Block SYN attacks to # Log Martians right?
– Heng Sopheak
Dec 27 '18 at 15:16
No let me post a simple answer so you can follow! And are you adding them manuallly or from a script?
– George Udosen
Dec 27 '18 at 15:17