nat-rtsp-dkms software package provides Connection tracking and NAT support for RTSP, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install nat-rtsp-dkms
nat-rtsp-dkms is installed in your system.
Make ensure the nat-rtsp-dkms package were installed using the commands given below,
$ sudo dpkg-query -l | grep nat-rtsp-dkms *
You will get with nat-rtsp-dkms package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Kernels |
| Package | nat-rtsp-dkms |
| Version | 0.7+1.g2ea3cb6-1 |
| Description | Connection tracking and NAT support for RTSP |
| Sub Section | Kernels |