dbadmin@DB-01:/opt/fb30/bin$ ./isql
Use CONNECT or CREATE DATABASE to specify a database
SQL> connect localhost:employee user sysdba password 123;
Database:  localhost:employee, User: sysdba
SQL>

e:\VM Library\Shared Folders\SHF\Firebird-3.0.0.31401-0_x64>isql
Use CONNECT or CREATE DATABASE to specify a database
SQL> connect 192.168.1.105:employee user sysdba password 123;
Statement failed, SQLSTATE = 08001
Invalid connection string
-Cannot transliterate character between character sets
-Invalid or incomplete multibyte or wide character
SQL>

root@db-05:/opt/fb30/bin# ./isql
Use CONNECT or CREATE DATABASE to specify a database
SQL> connect 192.168.1.105:employee user sysdba password 123;
Database:  192.168.1.105:employee, User: sysdba

SQL> show triggers;
Table name                       Trigger name                     Invalid
================================ ================================ =======
CUSTOMER                         SET_CUST_NO
EMPLOYEE                         SAVE_SALARY_CHANGE
EMPLOYEE                         SET_EMP_NO
SALES                            POST_NEW_ORDER
SQL>

#
#Мой комментарий
#
database
{
  enabled = true
  ...
}	

Invalid connection string
-Cannot transliterate character between character sets
-Invalid or incomplete multibyte or wide character