diff --git a/Dockerfile b/Dockerfile
index cb6487b..6712621 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,6 +12,6 @@ COPY gen_caddyfile_and_start.sh /bin/
 
 VOLUME /root/.caddy
 
-EXPOSE 2018
+EXPOSE 20018
 
 ENTRYPOINT /bin/gen_caddyfile_and_start.sh
diff --git a/build.sh b/build.sh
index c9eafed..8138fbd 100644
--- a/build.sh
+++ b/build.sh
@@ -5,7 +5,7 @@ set -e
 docker build -t caddsies .
 
 docker run --rm -it \
-   -p 2018:2018 \
+   -p 20018:20018 \
    -v $(pwd)/mnt:/mnt \
    -e CADDYFILE=/mnt/caddyfile \
    -e STUNFILE=/mnt/stunfile \
diff --git a/overload b/overload
index 337753f..e0d51c2 100644
--- a/overload
+++ b/overload
@@ -10,5 +10,5 @@ key=/etc/stunserver.key
 CAfile=/etc/stunclient.crt
 
 [default]
-accept=2018
+accept=20018
 connect=2015
diff --git a/test.sh b/test.sh
index 22c1af9..8104a39 100644
--- a/test.sh
+++ b/test.sh
@@ -1,11 +1,11 @@
 #! /bin/bash
 
 addr="${1:-${addr:-"192.168.0.86:8080/vpntor"}}"
-pport="${2:-${pport:-2018}}"
+pport="${2:-${pport:-20018}}"
 
 proxycacert="--proxy-cacert ./mnt/stunserver.crt"
 
-if ((pport==2018)); then
+if ((pport==20018)); then
    prox="${3:-${prox:-https://localhost}}"
 else
    prox="${3:-${prox:-http://localhost}}"