IPSec Settings IPSec Connection Name Remote IPSec Gateway Address (IP or Domain Name) Tunnel access from local IP addresses Subnet Single Address IP Address for VPN IP Subnetmask Tunnel access from remote IP addresses Subnet Single Address IP Address for VPN IP Subnetmask Key Exchange Method Auto(IKE) Manual Authentication Method Pre-Shared Key Certificate (X.509) Pre-Shared Key Certificates Perfect Forward Secrecy Enable Disable Advanced IKE Settings Encryption Algorithm DES 3DES AES Encryption Key DES: 16 digit Hex, 3DES: 48 digit Hex Authentication Algorithm MD5 SHA1 Authentication Key MD5: 32 digit Hex, SHA1: 40 digit Hex SPI Hex 100-FFFFFFFF Phase 1 Mode Main Aggressive Encryption Algorithm DES 3DES AES - 128 AES - 192 AES - 256 Integrity Algorithm MD5 SHA1 Select Diffie-Hellman Group for Key Exchange 768bit 1024bit 1536bit 2048bit 3072bit 4096bit 6144bit 8192bit Key Life Time   Seconds Phase 2 Encryption Algorithm DES 3DES AES - 128 AES - 192 AES - 256 Integrity Algorithm MD5 SHA1 Select Diffie-Hellman Group for Key Exchange 768bit 1024bit 1536bit 2048bit 3072bit 4096bit 6144bit 8192bit Key Life Time   Seconds