Index: openacs-4/packages/acs-tcl/tcl/security-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-tcl/tcl/security-procs.tcl,v
diff -u -r1.126.2.111 -r1.126.2.112
--- openacs-4/packages/acs-tcl/tcl/security-procs.tcl	5 May 2025 16:37:47 -0000	1.126.2.111
+++ openacs-4/packages/acs-tcl/tcl/security-procs.tcl	25 Sep 2025 17:03:47 -0000	1.126.2.112
@@ -2862,7 +2862,10 @@
                 # The value of the "DRIVER/servers" section might
                 # contain also a port.
                 #
-                set d1 [dict merge $d [ns_parsehostport $entry]]
+                set d1 [dict merge $d [ns_parsehostport \
+                                           [expr {[string match *:* $entry]
+                                                  ? "\[$entry\]"
+                                                  : $entry}]]]
                 set proto [dict get $d proto]
                 set host [dict get $d1 host]
                 set port [dict get $d1 port]