iptables and multiple icmp rules

rillian_at_yahoo.com
Date: 02/28/05 

Date: 28 Feb 2005 08:30:27 -0800

I am trying to setup iptables to allow pings from two subnets only and
rejecting the rest. I can get a rule defined and working for the first
network. When the second network rule is added, an error occurs. Below
are the two rules and the error:

Rules:

-A INPUT -p icmp -s 192.168.1.0/24 --icmp-type echo-request -j ACCEPT
-A INPUT -p icmp -s 192.168.3.0/24 --icmp-type echo-request -j ACCEPT

Error:

iptables-restore v1.2.5: Unknown Arg `--icmp-type'

Is their a limitation of one rule for each "icmp-type"?

Thanks in advance,
     Ray