diff --git a/ubuntu/network.md b/ubuntu/network.md
deleted file mode 100644
index e69de29..0000000
diff --git a/ubuntu/networking.md b/ubuntu/networking.md
index 8dab8e1..f28ccd9 100644
--- a/ubuntu/networking.md
+++ b/ubuntu/networking.md
@@ -9,7 +9,7 @@ lists programs with port numbers: `sudo netstat -tup`
 sudo lsof +M -i4 -i6
 
 # list all established connection that are not internal only"
-sudo sockstat | grep "ESTAB" | grep -v "127.0.0.1.*127.0.0.1" | grep -v "192.168.1.110.*192.168.1.110"
+sudo sockstat | grep "ESTAB"  | grep -v ".*192\.168\.1\.110.*192\.168\.1\.110.*" | grep -v ".*127\.0\.0\.1.*127\.0\.0\.1.*"
 
 let's encrypt certbot instructions for apache:
 https://certbot.eff.org/lets-encrypt/ubuntubionic-apache