Security in terms of tourists and immigrants is considered extremly important by the Lendosan government. Border security is handled by the Guard, one of the Confederation's two law enforcement agencies.
Firstly, it should be made clear to the international community that any ships or planes attempting to approach Lendosa without permission will not be accepted. There are a number of procedures for entering Lendosa. When a plane or ship wishes to enter Lendosan territory, it must radio ahead to various beacons around the coastline, and recieve permission. If permission is granted, it will be allowed to proceed to it's destination. If not, it must leave, or it will be intercepted by Lendosan military forces. If it is a ship, it will be stopped at sea; if it is a plane, it will be made to land at a military airfield. Of course, with large numbers of international flights entering and leaving Lendosa all the time, and with the large shipping trade in the Cislendian Ocean, entering Lendosa is routine, and no aircraft or vessels have yet been refused entry. Nonetheless, it is still necessary to gain permission. There are also contingencies for emergencies, particularly ones in which a craft may not be able to communicate because of a radio failure or some such thing - any vessel or aircraft that does not respond at all will be intercepted, but will not be fired upon unless hostile intent is obvious.
Once on Lendosan soil, all visitors must pass through basic security checks if they are to leave the craft. Passengers staying on a plane or boat to continue to its next destination do not have to pass security, but if they are getting off, they must. Passengers who intend to stay within the terminal, either to board another craft or to reboard the previous one, do not have to pass through a full security check, but those who wish to stay must go through a thorough check.