vpn-debug.sh

#!/bin/bash

TESTV='10.99.0.20'
TEST4='8.8.4.4'
TEST6='2001:4860:4860::8888'
TEST_DOMAIN='google.com'
VPN_DNS='10.99.0.20'
EXT_DNS='8.8.4.4'
OUTPUT=$(mktemp --suffix='.txt')

c+=("uname -a")
c+=("openvpn --version")
c+=("pidof openvpn")

c+=("ping $TESTV -w 2")
c+=("traceroute -4 -w 2 -m 20 $TESTV")
c+=("ping $TEST4 -w 2")
c+=("traceroute -4 -w 2 -m 20 $TEST4")
c+=("ping6 $TEST6 -w 2")
c+=("traceroute -6 -w 2 -m 20 $TEST6")

# links/addresses
c+=("ip -4 addr")
c+=("ip -6 addr")

# routing table
c+=("ip -4 route")
c+=("ip -6 route")

# DNS
c+=("cat /etc/resolv.conf")
c+=("dig $TEST_DOMAIN +time=2")
c+=("dig $TEST_DOMAIN @$EXT_DNS +time=2")
c+=("dig $TEST_DOMAIN @$VPN_DNS +time=2")


echo "This script will run multiple system and networking tests."
echo "It may take a few minutes to complete."
echo "----------------------------------------"

for c in "${c[@]}"; do
    echo "running: $c"
    echo "--------------------" >> $OUTPUT
    echo "> $c" >> $OUTPUT
    eval "$c" >> $OUTPUT 2>> $OUTPUT
    echo >> $OUTPUT
done

echo "----------------------------------------"
echo "saved to $OUTPUT"