Ciena has joined the growing list of transport equipment vendors that have developed network security features that can protect "in-flight" data traffic on metro and long-haul optical connections. According to the vendor, its WaveLogic Encryption technology can encrypt any traffic coming into a network, including Ethernet, Fibre Channel, OTN, IP, SONET and SDH, and transport it securely over 10GBit/s, 100Gbit/s and 200Gbit/s links with "virtually no added latency."