diff -uNr cups-2.3.3/conf/cupsd.conf.in cups-2.3.3.mod/conf/cupsd.conf.in
--- cups-2.3.3/conf/cupsd.conf.in	2020-04-27 21:04:29.000000000 +0300
+++ cups-2.3.3.mod/conf/cupsd.conf.in	2020-07-24 17:33:05.367781721 +0300
@@ -9,7 +9,7 @@
 @CUPS_PAGE_LOG_FORMAT@
 
 # Only listen for connections from the local machine.
-Listen localhost:@DEFAULT_IPP_PORT@
+Listen localhost:8631
 @CUPS_LISTEN_DOMAINSOCKET@
 
 # Show shared printers on the local network.
@@ -17,7 +17,7 @@
 BrowseLocalProtocols @CUPS_BROWSE_LOCAL_PROTOCOLS@
 
 # Default authentication type, when authentication is required...
-DefaultAuthType Basic
+DefaultAuthType None
 
 # Web interface setting...
 WebInterface @CUPS_WEBIF@
diff -uNr cups-2.3.3/conf/cups-files.conf.in cups-2.3.3.mod/conf/cups-files.conf.in
--- cups-2.3.3/conf/cups-files.conf.in	2020-04-27 21:04:29.000000000 +0300
+++ cups-2.3.3.mod/conf/cups-files.conf.in	2020-07-24 17:32:33.167618971 +0300
@@ -9,14 +9,6 @@
 # Do we call fsync() after writing configuration or status files?
 #SyncOnClose No
 
-# Default user and group for filters/backends/helper programs; this cannot be
-# any user or group that resolves to ID 0 for security reasons...
-#User @CUPS_USER@
-#Group @CUPS_GROUP@
-
-# Administrator user group, used to match @SYSTEM in cupsd.conf policy rules...
-# This cannot contain the Group value for security reasons...
-SystemGroup @CUPS_SYSTEM_GROUPS@
 @CUPS_SYSTEM_AUTHKEY@
 
 # User that is substituted for unauthenticated (remote) root accesses...