After adding new firewall rules on a Cisco 1801 and hitting 'Apply settings', the progress window will scroll for a short period before a dialog is displayed that reads:
SDM lost the connection to your router because of a communication error. SDM will shut down when you click the OK button.
Re-launch SDM to continue working. Enter the same URL you used to re-start SDM."
Upon re-starting SDM, the rules have not been applied. The behaviour is consistent. I am using SDM 2.5 and have tried SDM 2.4.x and multiple versions of the Java VM.
Any ideas why I am unable to apply the firewall settings?
Your help would be most appreciated.