I havent done many changes to the default config i think..
(pls let me know if you have any other suggestion after seeing the conf)
# oct/30/2018 09:24:13 by RouterOS 6.43.2
# software id = IXVJ-8FF3
#
# model = 750
# serial number = 467704CDB000
/interface bridge
add name=bridge1
/interface ethernet
set [ find default-name=ether1 ] advertise=10M-half,10M-full \
auto-negotiation=no speed=10Mbps
set [ find default-name=ether2 ] advertise=\
10M-half,10M-full,100M-half,100M-full,1000M-half,1000M-full
/interface list
add name=WAN
add name=LAN
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/ip pool
add name=dhcp ranges=192.168.42.212-192.168.42.254
/ip dhcp-server
add address-pool=dhcp disabled=no interface=bridge1 lease-time=3d name=dhcp1
/system logging action
add email-start-tls=yes email-to=xXx@gmail.com name=email target=email
/interface bridge port
add bridge=bridge1 interface=ether2
add bridge=bridge1 interface=ether3
add bridge=bridge1 interface=ether4
add bridge=bridge1 interface=ether5
/interface list member
add interface=ether1 list=WAN
add interface=bridge1 list=LAN
/ip address
add address=1xx.1xx.100.94/30 interface=ether1 network=1xx.1xx.100.92
add address=192.168.42.1/24 interface=bridge1 network=192.168.42.0
/ip dhcp-client
add dhcp-options=hostname,clientid interface=ether1
/ip dhcp-server network
add address=192.168.42.0/24 dns-server=8.8.8.8,8.8.4.4 domain=local \
gateway=192.168.42.1 netmask=24
/ip dns
set allow-remote-requests=yes servers=8.8.8.8,8.8.4.4
/ip firewall nat
add action=masquerade chain=srcnat out-interface=ether1
/ip route
add distance=1 gateway=1xx.1xx.100.93
/ip service
set telnet disabled=yes
set ftp disabled=yes
set www address=192.168.42.0/24 disabled=yes
set ssh disabled=yes
set api disabled=yes
set winbox address=192.168.42.0/24
set api-ssl disabled=yes
/system clock
set time-zone-name=Europe/xXx
/system identity
set name=MikroTik-01
/system logging
add action=email topics=interface
add action=email topics=critical
add topics=critical
add action=email disabled=yes topics=info
add disabled=yes topics=e-mail
/system routerboard settings
set silent-boot=no
/tool e-mail
set address=smtp.gmail.com from=xXx@gmail.com password=xXx port=587 \
start-tls=yes user=xXx
/tool graphing interface
add allow-address=192.168.42.0/24 interface=ether1 store-on-disk=no
/tool netwatch
add down-script=":log error \"WAN link is down\";" host=8.8.8.8 interval=30s \
up-script=":log error \"WAN link is up\";\r\
\n/tool e-mail send to=\"xXx@gmail.com\" subject=\"\$[/system identity \
get name] WAN link is up \$[/system clock get time]\""