Basic Cisco Router Configuration with NAT and DHCP

hostname myrouter
enable password @bcD987
enable secret @bcD987
service password-encryption
int fa4
 ip address 1.2.3.4 255.255.255.0
 ip nat outside
 no shut
int vlan 1
 ip address 192.168.5.1 255.255.255.0
 ip nat inside
 no shut
line vty 0 4
 password @bcD987
 login
line con 0
 password @bcD987
 login
access-list 100 permit 192.168.5.0 0.0.0.255
ip nat inside source list 100 interface FastEthernet 4 overload
ip name-server 1.2.3.4
ip name-server 5.6.7.8
ip dns server
ip http server
ip http secure-server
ip default-gateway 1.2.3.1
ip route 0.0.0.0 0.0.0.0 1.2.3.1
username myuser privilege 15 password 0 gh!JK678
ip dhcp excluded-address 192.168.5.1
ip dhcp pool mydhcppool
 network 192.168.5.0 255.255.255.0
 default-router 192.168.5.1
 domain-name mydomain.org
 dns-server 192.168.5.1 5.6.7.8
 netbios-name-server 192.168.5.1
 netbios-node-type h-node