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V-214689

CAT II (Medium)

The Juniper SRX Services Gateway VPN must terminate all network connections associated with a communications session at the end of the session.

Rule ID

SV-214689r1056184_rule

STIG

Juniper SRX Services Gateway VPN Security Technical Implementation Guide

Version

V3R2

CCIs

CCI-001133

Discussion

Idle TCP sessions can be susceptible to unauthorized access and hijacking attacks. IKE Dead Peer Detection (DPD) is a protocol that verifies the availability of IPsec peer devices by sending encrypted IKE Phase 1 notification payloads to peers. Note: For dynamic (remote access) VPN, the TCP keep-alive for remote access is implemented in the Juniper SRX Firewall STIG.

Check Content

Navigate to the IKE configuration.

[edit]
show security ike gateway <ike-peer-name>

If the DPD options are not configured, this is a finding.

Fix Text

For site-to-site VPN, configure an Internet Key Exchange (IKE) gateway that includes DPD parameters such as in the following example.

set security ike gateway IKE-PEER ike-policy IKE-POLICY
set security ike gateway IKE-PEER address <Peer IP Address>
set security ike gateway IKE-PEER dead-peer-detection always-send
set security ike gateway IKE-PEER dead-peer-detection interval 10
set security ike gateway IKE-PEER dead-peer-detection threshold 2
set security ike gateway IKE-PEER local-identity inet <IPv4 Address in Certificate>
set security ike gateway IKE-PEER remote-identity inet <IPv4 Address in Remote
Certificate>
set security ike gateway IKE-PEER external-interface <interface name>
set security ike gateway IKE-PEER version v2-only