Symantec 360R - Security Gateway SGS Administration Manual page 94

94 Establishing secure VPN connections
Configuring Gateway-to-Gateway tunnels
you chose. For each method, a key length is shown for both ASCII characters and
Hex characters. Table 6-5
Table 6-5 Encryption key lengths
Method Key length in character bytes
DES 8
3DES 24
AES-128 16
AES-192 24
AES-256 32
Table 6-6 defines authentication key lengths.
Table 6-6 Authentication key lengths
Method Key length in character bytes
MD5 16
SHA1 20
Configuration tasks for static Gateway-to-Gateway tunnels
Table 6-7 describes the tasks that are required to configure a static Gateway-to-
Gateway VPN tunnel.
Note: Complete each step in
and then for the remote security gateway.
Table 6-7 Static Gateway-to-Gateway configuration tasks
Task
Configure a VPN Policy (Phase 2 IKE
negotiation).
(Optional)
Create a static tunnel
Define IPsec Security Association Parameters
defines encryption key lengths.
Table 6-7 twice: first for the local security gateway
SGMI
VPN > VPN Policies
VPN > Static Tunnels
VPN > Static Tunnels > IPsec Security
Association
Key length in Hex
18 (0x + 16 hex digits)
50 (0x + 20 hex digits)
18 (0x + 20 hex digits)
50 (0x + 20 hex digits)
66 (0x + 20 hex digits)
Key length in Hex
34 (0x + 16 hex digits)
42 (0x + 20 hex digits)