Categories
Networking

DHCP, VLANs and subnets in home networks

In the article VLANs for home networks I wrote about how VLANs and subnets can improve network security by creating different segments, usually associated with a subnet. With multiple subnets, assigning addresses in each subnet via DHCP becomes more complex. DHCP IPv4 uses broadcast packets to ask for an IP address. VLANs create separate broadcast […]

Categories
Networking Security

DNS for home networks

In very simple terms, a Domain Name Service (DNS), is a service that turns specific network names (host names, service names) into IP addresses. It allows to use mnemonic names (mypc.example.com) instead of IP addresses (192.168.121.234) accessing internal network resources. There are several advantages in using DNS names instead of IP addresses directly: One simple […]