Essa é facil colega, voce so precisa configurar um
arquivinho chamado
/etc/sysctl.conf e mude o parametro.
aqui esta o arquivo pronto, so compare com o seu ai
ok.
Qualquer coisa da um grito.....
# Disables packet
forwarding
net.ipv4.ip_forward=1 # Enables source route verification net.ipv4.conf.all.rp_filter = 1 net.ipv4.conf.default.rp_filter = 1 # Disables the magic-sysrq key kernel.sysrq = 0 # If active, logs 'impossible' source
addresses
net.ipv4.conf.all.log_martians = 1 # If active, rewrites outgoing IP packets if
address changes
net.ipv4.ip_dynaddr = 0 # If active, ignores ICMP with broadcast
destination
net.ipv4.icmp_echo_ignore_broadcasts = 1 # If active, accepts IP packets with source route
info
net.ipv4.conf.all.accept_source_route = 0 # If active, ignores all ICMP
requests
net.ipv4.icmp_echo_ignore_all = 0 # Mask made of ICMP types for which rates are being
limited.
# Default: 6168 # Note: 6168 = 0x1818 = 1<<ICMP_DEST_UNREACH + 1<<ICMP_SOURCE_QUENCH + # 1<<ICMP_TIME_EXCEEDED + 1<<ICMP_PARAMETERPROB, which means # dest unreachable (3), source quench (4), time exceeded (11) # and parameter problem (12) ICMP packets are rate limited # (check values in icmp.h) # 6169 also limits echo_reply's net.ipv4.icmp_ratemask = 6169 # ICMP ratelimit, in jiffies
# 1 jiffie = 1/100s in Intel, 1/1024s in Alpha net.ipv4.icmp_ratelimit = 100 # If active, uses TCP SYN
cookies
net.ipv4.tcp_syncookies = 1 # If active, accepts ICMP redirect
orders
net.ipv4.conf.all.accept_redirects = 0
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