SUPPORT | SERVICES   In addition to our value added services, Walled Networks offers a collection of services to assist in supporting and completing your infrastructure's needs. Each managed service will have the benefit of being performed by a security professional.     OS Management, Linux: $50.00 Apache $30.00 Qmail $20.00 MySQL $50.00 PostgreSQL $50.00 OS Management, Windows: $100.00 MS SQL $60.00 IS Manager $20.00 Apache $30.00