error: unknown error 1 setting key 'net.ipv4.tcp_syncookies' - why ?

hi all


i try do

echo "1" > /proc/sys/net/ipv4/tcp_syncookies

but i see thise message

error: unknown error 1 setting key 'net.ipv4.tcp_syncookies'

my server is VPS ?

what the problem please ?

 

If your server is a VPS, I'm almost sure this is the reason for your problem.

 

thanks falko