Trying to initiate the SCTP association, but no message is getting initiated. Checked in the redhat linux machine, couldn't see sctp.

checksctp

checksctp: Protocol not supported

lsmod | grep sctp

lksctp-tools-1.0.17-2.el7.x86_64 package is installed in server. Please help me how to resolve this.

Was trying to clear the firewall settings in my RedHat Linux server.

After giving iptables -F, I am not able to reach the server.

# iptables -L
Chain INPUT (policy DROP)
target     prot opt source               destination
ACCEPT     all  --  anywhere             anywhere             state RELATED,ESTABLISHED
ACCEPT     icmp --  anywhere             anywhere
ACCEPT     all  --  anywhere             anywhere
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:ssh
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:diamondport
ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:33336
ACCEPT     sctp --  anywhere             anywhere             sctp dpts:1024:65535
ACCEPT     udp  --  anywhere             anywhere             udp dpt:gtp-user
ACCEPT     udp  --  anywhere             anywhere             udp dpts:6000:lm-x

 

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination

 

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination
# iptables -F

Please help me to resolve this.