search for: syn_backlog

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database node / possible SYN flooding on port 3306
2018 Jul 20
2
database node / possible SYN flooding on port 3306
...306. Sending cookies. possible SYN flooding on port 3306. Sending cookies. possible SYN flooding on port 3306. Sending cookies. possible SYN flooding on port 3306. Sending cookies. possible SYN flooding on port 3306. Sending cookies. I adapted already following: # sysctl -a |grep -E 'maxconn|syn_backlog' net.core.somaxconn = 2048 net.ipv4.tcp_max_syn_backlog = 2048 but ListenOverflows and ListenDrops values are still high # cat /proc/net/netstat | awk '{print $21 "-" $22 }' ListenOverflows-ListenDrops 13568-13568 any suggestion? -- Thanks, LF
database node / possible SYN flooding on port 3306
2018 Jul 21
1
database node / possible SYN flooding on port 3306
...s. >> possible SYN flooding on port 3306. Sending cookies. >> possible SYN flooding on port 3306. Sending cookies. >> possible SYN flooding on port 3306. Sending cookies. >> >> >> I adapted already following: >> >> # sysctl -a |grep -E 'maxconn|syn_backlog' >> net.core.somaxconn = 2048 >> net.ipv4.tcp_max_syn_backlog = 2048 >> >> >> but ListenOverflows and ListenDrops values are still high >> >> # cat /proc/net/netstat | awk '{print $21 "-" $22 }' >> ListenOverflows-ListenDrops...
database node / possible SYN flooding on port 3306
2018 Jul 20
0
database node / possible SYN flooding on port 3306
...ooding on port 3306. Sending cookies. > possible SYN flooding on port 3306. Sending cookies. > possible SYN flooding on port 3306. Sending cookies. > possible SYN flooding on port 3306. Sending cookies. > > > I adapted already following: > > # sysctl -a |grep -E 'maxconn|syn_backlog' > net.core.somaxconn = 2048 > net.ipv4.tcp_max_syn_backlog = 2048 > > > but ListenOverflows and ListenDrops values are still high > > # cat /proc/net/netstat | awk '{print $21 "-" $22 }' > ListenOverflows-ListenDrops > 13568-13568 > > any su...