Windows L2TP/IPsec VPN not connecting

Hi Everyone, just got my GL.inet MT6000, I set it up with stock firmware until I had time to install openwrt, for that period it worked fine. I flashed openwrt this morning and I'm having the following issue:

I have a work VPN connection on my windows machine to log into my office network remotely and it has simply stopped connecting, event viewer is telling me it is and error 809.

Also the ip address resolves correctly in traceroute but returns nothing when I ping it.

Steps Taken:

Firewall settings:

uci add firewall rule
uci set firewall.@rule[-1].name='Allow-IPsec-IKE'
uci set firewall.@rule[-1].src='wan'
uci set firewall.@rule[-1].dest_port='500'
uci set firewall.@rule[-1].proto='udp'
uci set firewall.@rule[-1].target='ACCEPT'

uci add firewall rule
uci set firewall.@rule[-1].name='Allow-IPsec-NAT-T'
uci set firewall.@rule[-1].src='wan'
uci set firewall.@rule[-1].dest_port='4500'
uci set firewall.@rule[-1].proto='udp'
uci set firewall.@rule[-1].target='ACCEPT'

uci add firewall rule
uci set firewall.@rule[-1].name='Allow-L2TP'
uci set firewall.@rule[-1].src='wan'
uci set firewall.@rule[-1].dest_port='1701'
uci set firewall.@rule[-1].proto='udp'
uci set firewall.@rule[-1].target='ACCEPT'

uci add firewall rule
uci set firewall.@rule[-1].name='Allow-IPsec-ESP'
uci set firewall.@rule[-1].src='wan'
uci set firewall.@rule[-1].proto='esp'
uci set firewall.@rule[-1].target='ACCEPT'

I've installed a package recommended here

opkg update 
opkg install kmod-nf-nathelper-extra

And ran:

echo "net.netfilter.nf_conntrack_helper = 1" >> /etc/sysctl.d/local.conf
/etc/init.d/sysctl restart

I'm rapidly running out of knowledge! Any suggestions would be wonderful

did you try

echo "net.netfilter.nf_conntrack_helper = 1" >> /etc/sysctl.d/local.conf
/etc/init.d/sysctl restart

Yes sorry forgot to mention that

in my case didn't need any firewalls rules just to enable that plug in
seems like your is diffrent :slight_smile:

@GAFAAAAA check that your Windows firewall settings havent changed. Windows may well have detected the (now) Openwrt router as a new network and reset some firewall rules.

They appear to be the same as before unfortunately

What version of OpenWrt are you using, v23 or V24
as the pervious, linked chat was V23
maybe pavelgl was talking about V24
and they have removed things between V23 & V24