06-10-2022
12:06 AM
- last edited on
06-10-2022
12:13 AM
by
Yanli Sun
My ftd can't connect to fmc because of routing reasons, now I need to add a static route and make the configuration priority higher than ospf
06-12-2022 03:04 AM
to add or remove static routes, use the configuration network static-routes command.
configuration network static-routes { ipv4 | ipv6 { add interface destiny netmask_or_prefix gateway | delete}
add | Ads a static route for the management interface. |
delete | Remove a static route for the management interface. You are proformed to choose which route to delete. |
interface | The ID of the management interface. Use the show network command to view the Management interface ID for your model. |
ipv4 | Ads or deletes a static route for the IPv4 management address. |
ipv6 | Ads or deletes a static route for the IPv6 management address. |
destiny | The deployment IP address to add or remove, in IPv4 or IPv6 format as an appliance. For example, 10.100.10.10 or 2001:db8::201. |
netmask_or_prefix | The network address mask for IPv4, or prefix for IPv6. The IPv4 netmask must be in a numbered presentation, for example, 255.255.255.0. The IPv6 prefix is a standard prefix number, sum as 96. |
gateway | The gateway address to add or remove, in IPv4 or IPv6 format as an appliance. |
6.0.1 | This command was introduced. |
Example:
configuration network static-routes ipv4 add eth0 192.168.10.0 255.255.255.0 192.168.1.1
Add static route on Firepower module:
https://community.cisco.com/t5/security-documents/add-static-route-on-firepower-module/ta-p/3156256
Combined with OSPF, the AD is small and the default value is 1, so there is no need to modify it.
Not sure if it's right or not, you can try it, hope it works
06-12-2022 12:22 PM
I am assuming you have your management interface default gateway via a data interface on the FTD and it is the data interface which is having the routing issue?
If so here is the solotion. Remember that you must correct the static route issue in the GUI once you have connectivity again as a new policy deploy will overwrite this solution. You also need to have access the the FTD CLI and are able to access root privileges. You dont need to go into the /ngfw/var/sf/bin directory but I like going there as this is where the script is located. Hope this helps.
>expert
# sudo su -
root# cd /ngfw/var/sf/bin
root# LinaConfigTool "route DMZ 1092.168.1.0 255.255.255.0 192.168.2.1";
06-13-2022
03:05 AM
- last edited on
06-13-2022
07:23 PM
by
Yanli Sun
Excuse me, does the DMZ in "route DMZ" refer to the area to which the routing interface belongs, or is it a custom nickname field?
06-13-2022 09:14 PM
06-16-2022 02:43 AM
06-19-2022 03:16 PM
Are you able to ping the FTD from the FMC? can you telnet from FMC CLI to the FTD on port tcp/8305. Remember also that you need to allow traffic from the FTD to the FMC on port tcp/8305 if this management traffic is passing through another firewall.
06-19-2022 06:46 PM
06-21-2022 01:20 PM
could you provide a network diagram? that shows the IPs and how these devices are connected to the network and their relation to eachother.
When you ping from the FTD you will be pinging from the data interfaces so if this traffic is not allowed in access rules the traffic is not permitted. so a better test would be ping from FMC.
So, what is between the FTDs and the FMC? a router, another firewall, or are they on the same subnet (doubtful as this started out as a routing question)?
Since FTD B can be managed the issue is most likely not routing. What is the management IP you have given FTD A? You said that A and B have the same configuration, does that mean you gave FTD A the same IP as you configured on B? If so then this is your problem. FTD A needs a separate IP.
If there are any firewalls or access lists in the path between the FMC and FTD A and B then you need to also check if the traffic is allowed towards FTD A.
06-22-2022 03:14 AM
06-22-2022 03:21 AM
to ping from the FMC you need to be the root user, so you need to log into cli, enter expert mode and then sudo su -
could you issue the command show managers on both FTD?
06-23-2022 09:51 PM
06-26-2022 02:07 PM
to issue a ping from the FMC you need to have root privileges, (sudo su -)
But as per the output of show managers the FMC has successfully registered with the FTD device.
06-26-2022 08:43 PM
However, the FMC shows that the FTD is disabled and cannot be managed.
I would like to try to make a any any configuration on FTD-CLI to see if the FTD-A is unable to connect to the FMC due to policy reasons, and how to write such a policy under the CLI and save it to take effect.
06-26-2022 08:45 PM
Since I was the post-docking device, the FTD was disconnected in November 2021.
Or how I should seek remote technical support.
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