It is there because in most cases multicast is not used. Notice that in this list multicast address range is added. See commands below.Add action=accept chain=input comment="defconf: accept ICMPv6 after RAW" protocol=icmpv6Īdd action=accept chain=input comment="defconf: accept established,related,untracked" connection-state=established,related,untrackedĪdd action=accept chain=input comment="defconf: accept UDP traceroute" port=33434-33534 protocol=udpĪdd action=accept chain=input comment="defconf: accept DHCPv6-Client prefix delegation." dst-port=546 protocol=udp src-address=fe80::/16Īdd action=accept chain=input comment="defconf: accept IKE" dst-port=500,4500 protocol=udpĪdd action=accept chain=input comment="defconf: accept IPSec AH" protocol=ipsec-ahĪdd action=accept chain=input comment="defconf: accept IPSec ESP" protocol=ipsec-espĪdd action=drop chain=input comment="defconf: drop all not coming from LAN" in-interface-list=!LAN Protect the Clientsīefore the actual set of rules, let's create a necessary address-list that contains all IPv4/6 addresses that cannot be forwarded. However, ensure that the public IP your are pointing to has been duly assigned to you by your service provider. To configure your router to use the Mikrotik source NAT feature described in this article, simply go to the command line interafec and enter commands similar to the ones below. How to configure Mikrotik source NAT to a specific IP address The specified IP address does not need to be configured on an interface on your Mikrotik device.įrom a security point of view, option two, Mikrotik source NAT, is preferable as it offers device protection, flexibility in choosing who uses what public IP on the internet and ensures that an IP address is not overloaded.
The former allows local hosts connected to your network to access the internet using the public IP address configured on the WAN port of your Mikrotik router while the latter allows your local hosts to access the internet using the public IP address specified by you as their source IP. You may also like: How to configure secure Mikrotik IPSec vpn using xauthentication
Before going into the configuration proper, I would like to explain the difference between the use of the masquerade feature and configuring Mikrotik source NAT to a specific IP address.
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