This offers several advantages. Carriers and network managers can more easily monitor a fixed route. They are a closed user group. Yet one organization's security advantage is another's risk. With a fixed route, internal wrongdoing is easier because it's possible to know exactly through which path or which switch the data will always travel, according to Cylink's Williams.
Encryption is a good security measure against the threat of intercepted frames.
Without the decryption key, getting at content is virtually impossible. With a PVC, such a situation is easily identified and corrected. An improperly configured PVC means data simply won't arrive at its intended destination. For companies sending sensitive data across SVC frame relay lines, Daley recommends hiring an independent computer security audit company to verify that the carrier has implemented its SVC tables correctly. International flight International frame relay networks can present more risks.