IPSec VPN Manual Key
FortiGate Version 4.0 Administration Guide
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Manual Key
If required, you can manually define cryptographic keys for establishing an IPSec VPN
tunnel. You would define manual keys in situations where:
• You require prior knowledge of the encryption or authentication key (that is, one of the
VPN peers requires a specific IPSec encryption or authentication key).
• You need to disable encryption and authentication.
In both cases, you do not specify IPSec phase 1 and phase 2 parameters; you define
manual keys by going to VPN > IPSEC > Manual Key instead.
For general information about how to configure an IPSec VPN, see the FortiGate IPSec
VPN User Guide.
Quick Mode
Selector
Optionally specify the source and destination IP addresses to be used as selectors
for IKE negotiations. If the FortiGate unit is a dialup server, you should keep the
default value 0.0.0.0/0 unless you need to circumvent problems caused by
ambiguous IP addresses between one or more of the private networks making up
the VPN. You can specify a single host IP address, an IP address range, or a
network address. You may optionally specify source and destination port numbers
and a protocol number.
If you are editing an existing phase 2 configuration, the Source address and
Destination address fields are unavailable if the tunnel has been configured to use
firewall addresses as selectors. This option exists only in the CLI. For more
information, see the dst-addr-type, dst-name, src-addr-type and src-
name keywords for the vpn ipsec phase2 command in the FortiGate CLI
Reference.
Source address If the FortiGate unit is a dialup server, type the source IP
address that corresponds to the local senders or network
behind the local VPN peer (for example, 172.16.5.0/24 or
172.16.5.0/255.255.255.0 for a subnet, or
172.16.5.1/32 or 172.16.5.1/255.255.255.255 for a
server or host, or 192.168.10.[80-100] or
192.168.10.80-192.168.10.100 for an address range).
A value of 0.0.0.0/0 means all IP addresses behind the
local VPN peer.
If the FortiGate unit is a dialup client, source address must
refer to the private network behind the FortiGate dialup client.
Source port Type the port number that the local VPN peer uses to
transport traffic related to the specified service (protocol
number). The range is from 0 to 65535. To specify all ports,
type 0.
Destination
address
Type the destination IP address that corresponds to the
recipients or network behind the remote VPN peer (for
example, 192.168.20.0/24 for a subnet, or
172.16.5.1/32 for a server or host, or 192.168.10.[80-
100] for an address range). A value of 0.0.0.0/0 means all
IP addresses behind the remote VPN peer.
Destination port Type the port number that the remote VPN peer uses to
transport traffic related to the specified service (protocol
number). The range is from 0 to 65535. To specify all ports,
type 0.
Protocol Type the IP protocol number of the service. The range is from
0 to 255. To specify all services, type 0.
Note: You should use manual keys only if it is unavoidable. There are potential difficulties in
keeping keys confidential and in propagating changed keys to remote VPN peers securely.
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