How to Install Arpon on Ubuntu 18.10?

The instructions for Ubuntu 16.04 are out of date (the config file does not list the same settings). For example there is no

DAEMON_OPTS="-q -f /var/log/arpon/arpon.log -g -D"
RUN="yes" 

latest settings arpon_3.0-ng+dfsg1-1

/etc/default/arpon

# Options for arpon(8)
# You must choose between static ARP inspection (SARPI), dynamic ARP inspection
# (DARPI), and hybrid ARP inspection' (HARPI). You can also pass other options
# to the daemon as explained in arpon(8), but do NOT pass `--daemon` or
# `--interface` (those will be added automatically as needed).
# DAEMON_ARGS="--sarpi"
DAEMON_ARGS="--darpi"
# DAEMON_ARGS="--harpi"
# when using systemd you have to enable arpon explicitly for each interface
# you want to run it on:
systemctl enable arpon@eth0
systemctl start arpon@eth0
# For the LSB init script, enter a list of interfaces into the list below;
# arpon will be started to protect ARP on these interfaces.
# Note: This is ignored when using systemd!
# INTERFACES="eth0 eth1"

I have installed it and I get the following error when I try run any arpon command via terminal,

user@user:/var/run$ sudo arpon -d -i eth0 -s
ERROR: msg.c:232 msg_init: 'No such file or directory'.

The pid exists but when I run

$ cat /var/run/arpon.pid it shows nothing.

1 Answer

I had the same problem and I solved it with

sudo mkdir /var/log/arpon

It seems that this folder is missing and the log file /var/log/arpon/arpon.log cannot be created during execution.