Peter_Johan 26 Report post Posted February 28, 2013 [root@centos /]# sysctl net.ip4v.tcp_syncookies error: "net.ip4v.tcp_syncookies" is an unknown key in Centos 6 the issue may be that I'm following a slightly old manual (2009) which more often refers to Fedora/RHEL and very rarely Centos. the key does exist under the path, I'm looking at it.. Thanks in advance for your help :-) 18 Share this post Link to post Share on other sites
Peter_Johan 26 Report post Posted March 1, 2013 also, does anyone know a good IRC channel for Linux beginners? 5 Share this post Link to post Share on other sites
Peter_Johan 26 Report post Posted March 1, 2013 ok, I need glasses.. should be ipv4! well, at least I have joint a forum, even if it's a little quite .. 3 Share this post Link to post Share on other sites
inittux 1,368 Report post Posted March 1, 2013 Welcome to the forums! sorry for late reply. forums haven't been very active. Glad you figured it out. You can join our irc channel. irc.foreverchat.net #linux and the linux mint channel (donno what server though) there seems to be nice people too. 3 Share this post Link to post Share on other sites
hybrid 189 Report post Posted March 11, 2013 Welcome to the forums! We're glad to have you here! sysctl net.ip4v.tcp_syncookies You've already noticed and pointed out that the issue here was mistyping ipv4 as ip4v, but I thought I'd clarify that was the issue here for anyone else reading. It happens to us all. 3 Share this post Link to post Share on other sites
