![]() However if the Mikrotik LAN interface is down when the IPSec tunnel is being established, then HQ is unable to access the loopback interface (even after PH1/PH2 successfully establishes) until the Mikrotik LAN interface is brought up.Īdd dh-group=XXXX enc-algorithm=XXXX hash-algorithm=XXXX name=PHASE1_XXXX nat-traversal=no proposal-check=exactĪdd address=2.2.2.2/32 exchange-mode=ike2 name=PEER_XXXX-XXXX profile=PHASE1_XXXXĪdd address=1.1.1.1/32 exchange-mode=ike2 name=PEER_XXXX-XX profile=PHASE1_XXXXĪdd auth-algorithms=XXXX enc-algorithms=XXXX lifetime=XXXX name=PHASE2_XXXX pfs-group=XXXXĪdd address=192.168.0.1/24 interface=loopback network=192.168.0.0Īdd auth-method=digital-signature certificate=XXXX.cer_0 peer=PEER_XXXX-XXĪdd auth-method=digital-signature certificate=XXXX.cer_0 peer=PEER_XXXX-XXXXĪdd action=none dst-address=192.168.0.0/24 src-address=192.168.0.0/24Īdd dst-address=0.0.0.0/0 peer=PEER_XXXX-XX,PEER_XXXX-XXXX proposal=PHASE2_XXXX sa-dst-address=1.1.1.1 sa-src-address=0.0.0.0 src-address=192.168.0.0/24 tunnel=yesĪny idea what we are missing on the config to enable hitting the loopback bridge interface from the IPSec tunnel when its member ports are down during IPSec establishment?Īdd address=192.168.255.1/32 interface=MGMT network=192.168.255.1Īdd dst-address=0.0.0.0/0 peer=PEER_XXXX-XX,PEER_XXXX-XXXX proposal=PHASE2_XXXX sa-dst-address=1.1.1.1 sa-src-address=0.0.0.0 src-address=192.168.255. If the Mikrotik LAN interface goes down AFTER the IPsec tunnel is established, HQ can still ping/connect to the Mikrotik loopback interface. You can PING with the source IP address of any interface configured in the router by using the following command format. The reason for this is there is a limited number of IPv4 address, and we are running out of possible combinations. The name refers to your computer, and when we use this command, we say: ping this computer. ![]() However, currently HQ is only able to access the loopback interface if the Mikrotik LAN interface is up at the time the IPSec tunnel was established. ping localhost You can use the name to ping localhost. This provides the all-important, but difficult to detect, alert when everything is running just fine on your end, but for whatever reason, your systems are unreachable from the outside by remote users or clients. We have an IPv4 loopback interface built on the Mikrotik for management, and would like HQ to be able to access this loopback interface via the IPSec tunnel at all times even if the Mikrotik's LAN interface is down. Another interesting ping-based sensor is the Cloud Ping Sensor, which pings monitored systems from a remote cloud of distributed systems. We are able to successfully establish PH1/PH2, and can pass traffic between both sides whether traffic is initiated from our HQ or from the remote Mikrotik CPE. On the 6.47.x code train specifically for new feature 'ipsec - allow specifying two peers for a single policy for failover'. ![]() In addition, 127.0.0.1 allows us access to the network services running on the originating machine.We have IPSec configured between a Mikrotik CPE and our HQ location using a non-Mikrotik firewall. So why do we need to establish a connection with the originating device? In some cases, we would want to validate the Internet Protocol (IP) stack on a device connected to the network. To verify that your TCP/IP software is installed, started, and working properly, ping the loopback interface. ![]() Minimum = 0ms, Maximum = 0ms, Average = 0ms Pinging the loopback interface on your system. Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),Īpproximate round trip times in milli-seconds: The ping command will send a 32-byte echo request if you dont use the -l option. Use this option to set the size, in bytes, of the echo request packet from 32 to 65,527. The ping command will send 4 by default if -n isnt used. For example, entering the command in a command prompt window will connect with the originating device: C:\Users>ping 127.0.0.1 This option sets the number of ICMP Echo Requests to send, from 1 to 4294967295. If you are unable to ping the local loopback adapter, TCP/IP might need to be reloaded or reconfigured on the machine you are using. 127.0.0.1 is a non-routable, private IP address used to establish a connection with the same device on which the address was entered. ![]() 127.0.0.1 is an IP address that is specifically assigned to the loopback interface, i.e a loopback address. ![]()
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