How can I manually set the iptables rules for my CSN?

If when running iptables -L, there are no rules on the CSN, then you can run:

 /opt/caringo/csn/bin/setfirewall.sh

to regenerate these rules.

The rules should look like this:

[root@csninternalnic ~]# iptables -L

Chain INPUT (policy ACCEPT)

target     prot opt source               destination        

CSNFIREWALL  all  --  anywhere             anywhere           

Chain FORWARD (policy ACCEPT)

target     prot opt source               destination        

ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED

ACCEPT     all  --  anywhere             anywhere            

Chain OUTPUT (policy ACCEPT)

target     prot opt source               destination        

Chain CSNFIREWALL (1 references)

target     prot opt source               destination        

ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED

ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:http

ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:ssh

ACCEPT     udp  --  anywhere             anywhere            udp spt:domain dpts:1024:65535

ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:webcache

ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:8090

ACCEPT     udp  --  anywhere             anywhere            udp dpt:ntp

ACCEPT     udp  --  anywhere             anywhere            udp dpt:snmp

ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:snmp

ACCEPT     udp  --  anywhere             anywhere            udp dpt:mdns

ACCEPT     icmp --  anywhere             anywhere            icmp echo-request

DROP       all  --  anywhere             anywhere