Here is the entry from ...10-network-security.conf from 16.04 (although from Desktop edition)
" # Turn on SYN-flood protections. Starting with 2.6.26, there is no loss # of TCP functionality/features under normal conditions. When flood # protections kick in under high unanswered-SYN load, the system # should remain more stable, with a trade off of some loss of TCP # functionality/features (e.g. TCP Window scaling). net.ipv4.tcp_syncookies=1 " Guess it hasn't been removed. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/57091 Title: proc/sys/net/ipv4/tcp_syncookies=1 should be seriously considered to permit SYN flood defense... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/procps/+bug/57091/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
