Nagios Support Forum

During NRPE agent (linux-nrpe-agent.tar.gz) installation on a linux client (running RHEL 6.6), the installation failed with the error:

.
.
.
Running './4-firewall'...
iptables: No chain/target/match by that name.
RESULT=1

I looked in the install log, and it did not provide any additional information.

Install steps included below...

tar xzf linux-nrpe-agent.tar.gz
cd linux-nrpe-agent
./fullinstall

The linux machine is on a closed network, with no access to open internet. It does have access to a valid Linux 6 EPEL.

Any help is appreciated.

Can you attach the full install.log from the installation directory

Actually if you do not need to configure firewall or iptables you can probably just run this in the installation directory

The commands it runs are:

iptables -L | awk '/^Chain.*INPUT/ {print $2; exit(0)}
iptables -L $CHAIN | wc -l
iptables -I "$CHAIN" "$RULENUM" -m state --state NEW -m tcp -p tcp --dport "5666" -j ACCEPT

Where $CHAIN is the result of the first command and $RULENUM is the output of the second command minus 2. What is the output of these commands if you run them manually? Also, does "iptables -L" show an INPUT table?