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Configurable routes for PPTP client #96

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Configurable routes for PPTP client #96

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f382205
pptp: use routes from environment in entrypoint script
aekrylov Dec 2, 2018
4568cb7
pptp: add instructions to README, fix compose file
Dec 4, 2018
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8 changes: 8 additions & 0 deletions pptp/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -13,11 +13,19 @@ pptp:
- TUNNEL=vps
- USERNAME=username
- PASSWORD=password
- ROUTES=0.0.0.0/1 128.0.0.0/1
net: host
privileged: yes
restart: unless-stopped
```

## available parameters (passed as environment variables)

* `SERVER`: IP or hostname of the VPN server
* `TUNNEL`: name of the tunnel
* `USERNAME` / `PASSWORD`: auth info for the server
* `ROUTES`: space separated list of routes that should be routed through the VPN. By default all traffic is routed

## up and running

```
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20 changes: 10 additions & 10 deletions pptp/docker-entrypoint.sh
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Original file line number Diff line number Diff line change
@@ -1,5 +1,7 @@
#!/bin/sh

ROUTES=${ROUTES:-0.0.0.0/1 128.0.0.0/1}

cat > /etc/ppp/peers/${TUNNEL} <<_EOF_
pty "pptp ${SERVER} --nolaunchpppd"
name "${USERNAME}"
Expand All @@ -10,16 +12,14 @@ file /etc/ppp/options.pptp
ipparam "${TUNNEL}"
_EOF_

cat > /etc/ppp/ip-up <<"_EOF_"
#!/bin/sh
ip route add 0.0.0.0/1 dev $1
ip route add 128.0.0.0/1 dev $1
_EOF_
echo "#!/bin/sh" > /etc/ppp/ip-up
for route in $ROUTES; do
echo "ip route add ${route} dev \$1" >> /etc/ppp/ip-up
done

cat > /etc/ppp/ip-down <<"_EOF_"
#!/bin/sh
ip route del 0.0.0.0/1 dev $1
ip route del 128.0.0.0/1 dev $1
_EOF_
echo "#!/bin/sh" > /etc/ppp/ip-down
for route in $ROUTES; do
echo "ip route del ${route} dev \$1" >> /etc/ppp/ip-down
done

exec pon ${TUNNEL} debug dump logfd 2 nodetach persist "$@"