Save 15% on Instant Deploy Bare-Metal Servers in 26 Global Markets with Coupon Code: EdgeSave

Why is there access problems with some websites?

Recent Linux kernels enable ECN by default, which may cause access problems with some websites on bad routers. To check ECN status:

# cat /proc/sys/net/ipv4/tcp_ecn
or
# sysctl net.ipv4.tcp_ecn

To turn it off, use:

# echo “0” > /proc/sys/net/ipv4/tcp_ecn
or
# sysctl -w net.ipv4.tcp_ecn=0

To disable TCP ECN on every boot, edit /etc/sysctl.conf and add:

net.ipv4.tcp_ecn = 0

Share on Twitter
Share on Facebook