The command messages in the communciation packets between the client and master nodes 
are encrypted by CAST 256.<br>
BTW, there is a signature of these packets -- 0x41 at the end of each packtes. 


<xmp>
10:08:04.163447 142.21.132.0 > 192.168.36.26: icmp: echo reply
0x0000   4500 007a 49ce 0000 fd01 7cdc 8e15 8400        E..zI.....|.....
0x0010   c0a8 241a 0000 7498 0000 c497 7069 4273        ..$...t.....piBs
0x0020   6969 584c 6733 4d66 5579 6754 652b 694b        iiXLg3MfUygTe+iK
0x0030   7756 4472 6465 7476 326d 4650 5454 315a        wVDrdetv2mFPTT1Z
0x0040   774d 376e 3079 4431 4d58 436c 4859 7334        wM7n0yD1MXClHYs4
0x0050   3966 6b30 2f57 466b 7344 4546 7152 6976        9fk0/WFksDEFqRiv
0x0060   384b 6b47 4b79 726e 6f4b 5a57 6d2b 4b5a        8KkGKyrnoKZWm+KZ
0x0070   7941 4141 4141 4141 4141                       yAAAAAAAAA
10:08:04.223529 142.21.132.0 > 192.168.36.26: icmp: echo reply
0x0000   4500 007a 1b3e 0000 f601 b26c 8e15 8400        E..z.>.....l....
0x0010   c0a8 241a 0000 8869 0000 b0c6 7069 4273        ..$....i....piBs
0x0020   6969 584c 6733 4d66 5579 6754 652b 694b        iiXLg3MfUygTe+iK
0x0030   7756 4472 6465 7476 326d 4650 5454 315a        wVDrdetv2mFPTT1Z
0x0040   774d 376e 3079 4431 4d58 436c 4859 7334        wM7n0yD1MXClHYs4
0x0050   3966 6b30 2f57 466b 7344 4546 7152 6976        9fk0/WFksDEFqRiv
0x0060   384b 6b47 4b79 726e 6f4b 5a57 6d2b 4b5a        8KkGKyrnoKZWm+KZ
0x0070   7941 4141 4141 4141 4141                       yAAAAAAAAA
10:08:04.283972 142.21.132.0 > 192.168.36.26: icmp: echo reply
0x0000   4500 007a 9081 0000 cb01 6829 8e15 8400        E..z......h)....
0x0010   c0a8 241a 0000 ce16 dc3e 8eda 7069 4273        ..$......>..piBs
0x0020   6969 584c 6733 4d66 5579 6754 652b 694b        iiXLg3MfUygTe+iK
0x0030   7756 4472 6465 7476 326d 4650 5454 315a        wVDrdetv2mFPTT1Z
0x0040   774d 376e 3079 4431 4d58 436c 4859 7334        wM7n0yD1MXClHYs4
0x0050   3966 6b30 2f57 466b 7344 4546 7152 6976        9fk0/WFksDEFqRiv
0x0060   384b 6b47 4b79 726e 6f4b 5a57 6d2b 4b5a        8KkGKyrnoKZWm+KZ
0x0070   7941 4141 4141 4141 4141                       yAAAAAAAAA
10:08:04.384058 142.21.132.0 > 192.168.36.26: icmp: echo reply
0x0000   4500 007a 9e78 0000 f001 3532 8e15 8400        E..z.x....52....
0x0010   c0a8 241a 0000 3930 0000 0000 7069 4273        ..$...90....piBs
0x0020   6969 584c 6733 4d66 5579 6754 652b 694b        iiXLg3MfUygTe+iK
0x0030   7756 4472 6465 7476 326d 4650 5454 315a        wVDrdetv2mFPTT1Z
0x0040   774d 376e 3079 4431 4d58 436c 4859 7334        wM7n0yD1MXClHYs4
0x0050   3966 6b30 2f57 466b 7344 4546 7152 6976        9fk0/WFksDEFqRiv
0x0060   384b 6b47 4b79 726e 6f4b 5a57 6d2b 4b5a        8KkGKyrnoKZWm+KZ
0x0070   7941 4141 4141 4141 4141                       yAAAAAAAAA
10:08:04.399640 142.21.132.0 > 192.168.36.26: icmp: echo reply
0x0000   4500 007a f65a 0000 f301 da4f 8e15 8400        E..z.Z.....O....
0x0010   c0a8 241a 0000 3930 0000 0000 7069 4273        ..$...90....piBs
0x0020   6969 584c 6733 4d66 5579 6754 652b 694b        iiXLg3MfUygTe+iK
0x0030   7756 4472 6465 7476 326d 4650 5454 315a        wVDrdetv2mFPTT1Z
0x0040   774d 376e 3079 4431 4d58 436c 4859 7334        wM7n0yD1MXClHYs4
0x0050   3966 6b30 2f57 466b 7344 4546 7152 6976        9fk0/WFksDEFqRiv
0x0060   384b 6b47 4b79 726e 6f4b 5a57 6d2b 4b5a        8KkGKyrnoKZWm+KZ
0x0070   7941 4141 4141 4141 4141                       yAAAAAAAAA
10:08:04.421503 142.21.132.0 > 192.168.36.26: icmp: echo reply
0x0000   4500 007a 4952 0000 e901 9158 8e15 8400        E..zIR.....X....
0x0010   c0a8 241a 0000 3930 0000 0000 7069 4273        ..$...90....piBs
0x0020   6969 584c 6733 4d66 5579 6754 652b 694b        iiXLg3MfUygTe+iK
0x0030   7756 4472 6465 7476 326d 4650 5454 315a        wVDrdetv2mFPTT1Z
0x0040   774d 376e 3079 4431 4d58 436c 4859 7334        wM7n0yD1MXClHYs4
0x0050   3966 6b30 2f57 466b 7344 4546 7152 6976        9fk0/WFksDEFqRiv
0x0060   384b 6b47 4b79 726e 6f4b 5a57 6d2b 4b5a        8KkGKyrnoKZWm+KZ
0x0070   7941 4141 4141 4141 4141                       yAAAAAAAAA
10:08:04.524307 142.21.132.0 > 192.168.36.26: icmp: echo reply
0x0000   4500 007a 153f 0000 ef01 bf6b 8e15 8400        E..z.?.....k....
0x0010   c0a8 241a 0000 1c81 1caf 0000 7069 4273        ..$.........piBs
0x0020   6969 584c 6733 4d66 5579 6754 652b 694b        iiXLg3MfUygTe+iK
0x0030   7756 4472 6465 7476 326d 4650 5454 315a        wVDrdetv2mFPTT1Z
0x0040   774d 376e 3079 4431 4d58 436c 4859 7334        wM7n0yD1MXClHYs4
0x0050   3966 6b30 2f57 466b 7344 4546 7152 6976        9fk0/WFksDEFqRiv
0x0060   384b 6b47 4b79 726e 6f4b 5a57 6d2b 4b5a        8KkGKyrnoKZWm+KZ
0x0070   7941 4141 4141 4141 4141                       yAAAAAAAAA
10:08:04.564170 142.21.132.0 > 192.168.36.26: icmp: echo reply
0x0000   4500 007a ef1c 0000 c801 0c8e 8e15 8400        E..z............
0x0010   c0a8 241a 0000 0620 9e8f 9480 7069 4273        ..$.........piBs
0x0020   6969 584c 6733 4d66 5579 6754 652b 694b        iiXLg3MfUygTe+iK
0x0030   7756 4472 6465 7476 326d 4650 5454 315a        wVDrdetv2mFPTT1Z
0x0040   774d 376e 3079 4431 4d58 436c 4859 7334        wM7n0yD1MXClHYs4
0x0050   3966 6b30 2f57 466b 7344 4546 7152 6976        9fk0/WFksDEFqRiv
0x0060   384b 6b47 4b79 726e 6f4b 5a57 6d2b 4b5a        8KkGKyrnoKZWm+KZ
0x0070   7941 4141 4141 4141 4141  

</xmp>