Mikrotik Router Tips

If you are using a Mikrotik Router for your Internet Connection the following tips may help. LAN is setup as a bridge interface, and the pppoe account is pppoe-out1

Mikrotik Router with PPPOE

Set “Change TCP MSS” to default

Mikrotik IPv6 RouterOS V7x Template

/ipv6 address
add address=::1 from-pool=ipv6-pool interface=bridge1

/ipv6 dhcp-client
add add-default-route=yes interface=pppoe-out1 pool-name=ipv6-pool request=prefix use-interface-duid=no

/ipv6 nd
set [ find default=yes ] dns=2606:4700:4700::1112,2606:4700:4700::1002 interface=bridge1 other-configuration=yes

/ipv6 firewall filter
add action=accept chain=input comment="ACCEPT: EST & RELATED" connection-state=established,related
add action=drop chain=input comment="DROP: INVALID" connection-state=invalid
add action=accept chain=input comment="ACCEPT: ICMP" protocol=icmpv6
add action=accept chain=input comment="ACCEPT: DHCPv6" dst-port=546 in-interface=all-ppp protocol=udp
add action=accept chain=input comment="ACCEPT: LAN" in-interface=bridge1
add action=drop chain=input comment="DROP: DEFAULT"
add action=accept chain=forward comment="ACCEPT: EST & RELATED" connection-state=established,related
add action=drop chain=forward comment="DROP: INVALID" connection-state=invalid
add action=accept chain=forward comment="ACCEPT: ICMP" protocol=icmpv6
add action=accept chain=forward comment="ACCEPT: LAN" in-interface=bridge1
add action=drop chain=forward comment="DROP: DEFAULT"