Raspberry pi + UMTS(3g) as OpenVPN Client not working

[darellon]

Hmm, seems i cant ping any domain name (eg. google.com) but i can ping IP addresses.

I've pinged:

Code: Select all

(google-public-dns-a.google.com) 8.8.8.8
(google-public-dns-b.google.com) 8.8.4.4
(ns1.telstra.net) 139.130.4.5

also tried another of my servers ip address, getting a response from all four.

Am i correct in assuming it has something to do with the DNS settings?

[darellon]

In case someone else encounters the same problem:

I've solved the problem using the update-resolv-conf script, which comes with OpenVPN and added the script lines provided by TinCanTech (viewtopic.php?f=4&t=21844)

Added the following two lines to my client config file:

Code: Select all

 up update-resolv-conf-up
 down update-resolv-conf-down

Were update-resolv-conf-up is:

Code: Select all

#!/bin/bash

#Added the following two lines
umts_gateway=$(/sbin/ifconfig ppp0 | grep 'inet addr:' | cut -d: -f2 | awk '{ print $1}')
/sbin/ip route add $trusted_ip/32 via $umts_gateway

[ -x /sbin/resolvconf ] || exit 0
[ "$script_type" ] || exit 0
[ "$dev" ] || exit 0

split_into_parts()
{
	part1="$1"
	part2="$2"
	part3="$3"
}

case "$script_type" in
  up)
	NMSRVRS=""
	SRCHS=""
	for optionvarname in ${!foreign_option_*} ; do
		option="${!optionvarname}"
		echo "$option"
		split_into_parts $option
		if [ "$part1" = "dhcp-option" ] ; then
			if [ "$part2" = "DNS" ] ; then
				NMSRVRS="${NMSRVRS:+$NMSRVRS }$part3"
			elif [ "$part2" = "DOMAIN" ] ; then
				SRCHS="${SRCHS:+$SRCHS }$part3"
			fi
		fi
	done
	R=""
	[ "$SRCHS" ] && R="search $SRCHS
"
	for NS in $NMSRVRS ; do
        	R="${R}nameserver $NS
"
	done
	echo -n "$R" | /sbin/resolvconf -a "${dev}.openvpn"
	;;
  down)
	/sbin/resolvconf -d "${dev}.openvpn"
	;;
esac

and update-resolv-conf-down is:

Code: Select all

#!/bin/bash

#Added the line below
/sbin/ip route delete $trusted_ip

[ -x /sbin/resolvconf ] || exit 0
[ "$script_type" ] || exit 0
[ "$dev" ] || exit 0

split_into_parts()
{
	part1="$1"
	part2="$2"
	part3="$3"
}

case "$script_type" in
  up)
	NMSRVRS=""
	SRCHS=""
	for optionvarname in ${!foreign_option_*} ; do
		option="${!optionvarname}"
		echo "$option"
		split_into_parts $option
		if [ "$part1" = "dhcp-option" ] ; then
			if [ "$part2" = "DNS" ] ; then
				NMSRVRS="${NMSRVRS:+$NMSRVRS }$part3"
			elif [ "$part2" = "DOMAIN" ] ; then
				SRCHS="${SRCHS:+$SRCHS }$part3"
			fi
		fi
	done
	R=""
	[ "$SRCHS" ] && R="search $SRCHS
"
	for NS in $NMSRVRS ; do
        	R="${R}nameserver $NS
"
	done
	echo -n "$R" | /sbin/resolvconf -a "${dev}.openvpn"
	;;
  down)
	/sbin/resolvconf -d "${dev}.openvpn"
	;;
esac

Finally connected by typing:

Code: Select all

sudo openvpn --config client.ovpn --script-security 2

Thanks again for all the help

[TinCanTech]

Thanks for letting us know your solution