'fwdfw dnat' => 'Destination NAT (Port forwarding)',
'fwdfw dnat error' => 'You have to select a single host for DNAT. Groups or networks are not allowed.',
'fwdfw dnat porterr' => 'You have to select a single port or portrange (tcp/udp) for NAT',
+'fwdfw dnat porterr2' => 'Cannot use external port (NAT) when no destination port is defined.',
'fwdfw edit' => 'Edit',
'fwdfw err nosrc' => 'No source selected.',
'fwdfw err nosrcip' => 'Please provide a source IP address.',
'fwhost err empty' => 'Please fill in all input fields',
'fwhost err emptytable' => 'No entries in this group',
'fwhost err groupempty' => 'The selected group is empty',
-'fwhost err grpexist' => 'Group already exists',
+'fwhost err grpexist' => 'A group with the same name already exists',
'fwhost err hostexist' => 'A host with the same name already exists',
'fwhost err hostorip' => 'Invalid name or IP address',
'fwhost err ip' => 'IP address invalid',