Error while allowing SSH connections on UFW

  • Posted October 29, 2014

Currently i have a server running Ubuntu 14.04 on a LEMP stack, i was trying to enable UFW following this tutorial.

But after i run ** sudo ufw allow ssh**

I’m getting the following error: ERROR: initcaps [Errno 2] modprobe: ERROR: …/libkmod/libkmod.c:556 kmod_search_moddep() could not open moddep file ‘/lib/modules/3.13.0-36-generic/modules.dep.bin’ ip6tables v1.4.21: can’t initialize ip6tables table `filter’: Table does not exist (do you need to insmod?) Perhaps ip6tables or your kernel needs to be upgraded.

Any ideas?


worked for me too thanks!

Exactly the same problem…

The reason is because the LEMP Digital Ocean image is missing these kernel files.

You can follow this guide to install the correct kernel… It appears t have worked for me.

The same problem.

Exactly the same problem

Submit an answer
You can type!ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Run the following command and then reboot your droplet to fix it:

sudo apt-get install linux-image-$(uname -r)

That should install your Droplet’s kernel and the corresponding modules on the Droplet.

This comment has been deleted

It appears that you might have upgraded the kernel without rebooting. Try rebooting the server and trying again. If that fails, let me know.