Example: Configuring An Ike Proposal; Configuring Ipsec Policies - Juniper ACX1000 Configuration Manual

ACX Series Universal Access Router Configuration Guide

Example: Configuring an IKE Proposal

Configuring IPsec Policies

1102
[edit services ipsec-vpn ike proposal proposal-name]
lifetime-seconds seconds;
By default, the IKE SA lifetime is 3600 seconds. The range is from 180 through
86,400 seconds.
NOTE: For IKE proposals, there is only one SA lifetime value, specified by the
Junos OS. IPsec proposals use a different mechanism; for more information,
see Configuring the Lifetime for an IPsec SA.
Configure an IKE proposal:
[edit services ipsec-vpn ike]
proposal ike-proposal {
authentication-method pre-shared-keys;
dh-group group1;
authentication-algorithm hmac-sha1-96;
encryption-algorithm aes-128-cbc;
}
An IPsec policy defines a combination of security parameters (IPsec proposals) used
during IPsec negotiation. It defines Perfect Forward Secrecy (PFS) and the proposals
needed for the connection. During the IPsec negotiation, IPsec looks for a proposal that
is the same on both peers. The peer that initiates the negotiation sends all its policies to
the remote peer, and the remote peer tries to find a match.
A match is made when both policies from the two peers have a proposal that contains
the same configured attributes. If the lifetimes are not identical, the shorter lifetime
between the two policies (from the host and peer) is used.
You can create multiple, prioritized IPsec proposals at each peer to ensure that at least
one proposal matches a remote peer's proposal.
First, you configure one or more IPsec proposals; then you associate these proposals
with an IPsec policy. You can prioritize a list of proposals used by IPsec in the
statement by listing the proposals you want to use, from first to last.
To configure an IPsec policy, include the
and one or more proposals to associate with the policy, at the
hierarchy level:
ipsec]
[edit services ipsec-vpn ipsec]
policy policy-name {
description description;
perfect-forward-secrecy {
keys (group1 | group2 | group5 | group14);
}
proposals [ proposal-names ];
policy statement, and specify the policy name
[edit services ipsec-vpn
Copyright © 2017, Juniper Networks, Inc.
policy