This is achieved with firewall software running on the network's gateway router. It serves as the default gateway for all network devices. The airport is a major hub and the largest international gateway for American Airlines. Japan serves as a useful gateway to Asia for North American travelers. Intelligent Application Gateway and is publicly accessible at https&colon;//client.nhs.net. It was introduced after the discontinuation of Microsoft Forefront Unified Access Gateway (UAG). The central gateway to Norway by air is Oslo Airport, Gardermoen. The airport is the primary international air freight gateway in the nation. Metro Manila is the main gateway to the Philippines. Brisbane Airport is the main international and domestic gateway serving the state. It is the principal air gateway to the Springfield region. It serves as the primary gateway into Langkawi. Melbourne Airport is the major domestic and international gateway for the state. Sydney is a gateway to Australia for many international visitors. Seeding makes mapping information stored on the NPCI payment gateway that facilitates the subsidy payment.