>[!WARNING] >All obfuscation chains are finalized with a single round of Base64 to ensure that the payload is HTTP compliant prior to transfer. An obfuscation chain is a series of algorithms used to mutate the content of HTTP transactions between [[Transfer Server|transfer servers]] and [[Client|clients]]. - A transfer server's obfuscation chain is configured via [[Admin Server]]. - Transfer servers and clients can be configured with only a single obfuscation chain at a time. - Changes applied to an obfuscation chain must be replicated to clients, otherwise client-side deobfuscation will fail. - The obfuscation chain must not be altered while file transfers are ongoing.