diff --git a/rpmbuild/SPECS/omc.spec b/rpmbuild/SPECS/omc.spec
index fa7abdf..d90be8c 100644
--- a/rpmbuild/SPECS/omc.spec
+++ b/rpmbuild/SPECS/omc.spec
@@ -169,6 +169,14 @@ rm libwiretap.so
 rm libwsutil.so.13
 rm libwsutil.so
 rm -f ${UsrLocalBinDir}/omcd
+
+# setting firewall
+PortList="80 33030 443 33443 22222"
+for Port in ${PortList}; do 
+    firewall-cmd --zone=public --remove-port=${Port}/tcp --permanent
+done
+firewall-cmd --reload
+
 if [ "$1" = "0" ] ; then
 sudo systemctl stop restagent.service
 sudo systemctl stop crontask.service