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0- Installing vSRX and SRX

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Remote Access VPN - CLI

Link to YouTube Video

NCP-e client

https://www.ncp-e.com/en/login/exclusive-remote-access/

ZIP file
and EXE ( or unpackage )

Configuration Steps

Step 1. Configure User access profile and IP Address Pool

Step 2. Configure IPSec Phase 1

Step 3. Configure IPSec Phase 2

Step 4. Configure Dynamic VPN Parameters

Step 5. Configure Security Policy

Step 6. Verifying IPSec Connection

Code Block

title	Configuration

# Step 1. Configure User access profile and IP Address Pool
# ----------------------------------------------------------

# IP Address Pool
set access address-assignment pool RA-NCP-pool family inet network 192.168.100.0/24
set access address-assignment pool RA-NCP-pool family inet xauth-attributes primary-dns 8.8.8.8

# Client Access profile or end-user access profile: username and password + IP@ pool mapping
set access profile RA-NCP-Profile client NCP-user1 firewall-user password lab123
set access profile RA-NCP-Profile address-assignment pool RA-NCP-pool

# create Secure Tunnel interface or st0.1
set interface st0 unit 1 family inet 

# security zone allow ( ike not for st0.1 ) # Also st0.1 could be in a separate VPN Zone
set security zone security-zone untrust host-inbound-traffic system-services ike
set security zone security-zone untrust interfaces st0.1
set security zone security-zone untrust interfaces ge-0/0/2.0



# Step 2. Configure IKE or IPSec Phase 1
# --------------------------------

# Proposal
set security ike proposal RA-NCP-IKE-Pro authentication-method pre-shared-keys
set security ike proposal RA-NCP-IKE-Pro dh-group group19
set security ike proposal RA-NCP-IKE-Pro authentication-algorithm sha-256
set security ike proposal RA-NCP-IKE-Pro encryption-algorithm aes-256-cbc

# Policy
set security ike policy RA-NCP-IKE-Pol mode aggressive
set security ike policy RA-NCP-IKE-Pol proposals RA-NCP-IKE-Pro
set security ike policy RA-NCP-IKE-Pol pre-shared-key ascii-text juniper123

# Gateway 
set security ike gateway RA-NCP-GW ike-policy RA-NCP-IKE-Pol
set security ike gateway RA-NCP-GW dynamic user-at-hostname "user@LB.net"
set security ike gateway RA-NCP-GW dynamic ike-user-type shared-ike-id
set security ike gateway RA-NCP-GW external-interface ge-0/0/2
set security ike gateway RA-NCP-GW aaa access-profile RA-NCP-Profile
set security ike gateway RA-NCP-GW version v1-only
 

# Step 3. Configure IPSec Phase 2
# --------------------------------

# Porposal
set security ipsec proposal RA-NCP-IPsec-Pro encryption-algorithm aes-256-gcm

# Policy
set security ipsec policy RA-NCP-IPsec-Pol perfect-forward-secrecy keys group19
set security ipsec policy RA-NCP-IPsec-Pol proposal-set RA-NCP-IPsec-Pro

# Step 4. Configure Dynamic VPN Parameters
# ----------------------------------------

# vpn
set security ipsec vpn RA-NCP-VPN bind-interface st0.1 
set security ipsec vpn RA-NCP-VPN ike gateway RA-NCP-GW
set security ipsec vpn RA-NCP-VPN ike ipsec-policy RA-NCP-IPsec-Pol
set security ipsec vpn RA-NCP-VPN traffic-selector RA-NCP-TS local-ip 0.0.0.0/0 remote-ip 0.0.0.0/0

# Step 5. Configure Security Policy
# ---------------------------------

set security address-book Server address lubuntu 10.0.2.3/32
set security zones security-zone servers
set security policies from-zone untrust to-zone servers policy RA-NCP-Access match source-address any destination-address Server application any
set security policies from-zone untrust to-zone servers policy RA-NCP-Access then permit

enable policy

from untrust to trust

Code Block

title	security policy
collapse	true

set security policies from-zone untrust to-zone servers policy RA-NCP-Access match source-address any
set security policies from-zone untrust to-zone servers policy RA-NCP-Access match destination-address any
set security policies from-zone untrust to-zone servers policy RA-NCP-Access match application any
set security policies from-zone untrust to-zone servers policy RA-NCP-Access then permit
set security policies from-zone untrust to-zone trust policy Allow_all match source-address any
set security policies from-zone untrust to-zone trust policy Allow_all match destination-address any
set security policies from-zone untrust to-zone trust policy Allow_all match application any
set security policies from-zone untrust to-zone trust policy Allow_all then permit
set security policies from-zone untrust to-zone trust policy Allow_all then log session-init
set security policies from-zone untrust to-zone trust policy Allow_all then log session-close

on lubuntu

1- enable SSH: lubuntu 20 live ssh and root remote access

2- add static route back to the windows client : ip route and static route

sudo ip route add 192.168.100.0/24 via 10.0.2.2 dev ens38

Code Block

title	add route

lubuntu@lubuntu:~$ ip route
default via 192.168.235.2 dev ens33 proto dhcp metric 102
10.0.2.0/24 dev ens38 proto kernel scope link src 10.0.2.3 metric 101
192.168.100.0/24 via 10.0.2.2 dev ens38
192.168.235.0/24 dev ens33 proto kernel scope link src 192.168.235.129 metric 102

full config of SRX

Code Block

title	default config of vSRX
collapse	true

here

Code Block

title	full config
collapse	true

root@vsrx1> show configuration | display set
set version 20.3R1.8
set system host-name vsrx1
set system root-authentication encrypted-password "$6$odFzKsnx$Adik5fz/.7Yhg7OxltL10BKzvIog8inZ/JNRFozmIehDnlac1z600.9PCO4/uFIfoecOBUAzWljZttW4pPZjZ."
set system services ssh root-login allow
set system services netconf ssh
set system services web-management https system-generated-certificate
set system syslog user * any emergency
set system syslog file messages any notice
set system syslog file messages authorization info
set system syslog file interactive-commands interactive-commands any
set system license autoupdate url https://ae1.juniper.net/junos/key_retrieval
set security log mode stream
set security log format syslog
set security log report
set security ike proposal RA-NCP-IKE-Pro authentication-method pre-shared-keys
set security ike proposal RA-NCP-IKE-Pro dh-group group19
set security ike proposal RA-NCP-IKE-Pro authentication-algorithm sha-256
set security ike proposal RA-NCP-IKE-Pro encryption-algorithm aes-256-cbc
set security ike policy RA-NCP-IKE-Pol mode aggressive
set security ike policy RA-NCP-IKE-Pol proposals RA-NCP-IKE-Pro
set security ike policy RA-NCP-IKE-Pol pre-shared-key ascii-text "$9$D3H.5n/tIEyQFEylKx7jHqmQF69A01R"
set security ike gateway RA-NCP-GW ike-policy RA-NCP-IKE-Pol
set security ike gateway RA-NCP-GW dynamic user-at-hostname "user@LB.net"
set security ike gateway RA-NCP-GW dynamic ike-user-type shared-ike-id
set security ike gateway RA-NCP-GW external-interface ge-0/0/2
set security ike gateway RA-NCP-GW aaa access-profile RA-NCP-Profile
set security ike gateway RA-NCP-GW version v1-only
set security ipsec proposal RA-NCP-IPsec-Pro encryption-algorithm aes-256-gcm
set security ipsec policy RA-NCP-IPsec-Pol perfect-forward-secrecy keys group19
set security ipsec vpn RA-NCP-VPN bind-interface st0.1
set security ipsec vpn RA-NCP-VPN ike gateway RA-NCP-GW
set security ipsec vpn RA-NCP-VPN ike ipsec-policy RA-NCP-IPsec-Pol
set security ipsec vpn RA-NCP-VPN traffic-selector RA-NCP-TS local-ip 0.0.0.0/0
set security ipsec vpn RA-NCP-VPN traffic-selector RA-NCP-TS remote-ip 0.0.0.0/0
set security address-book ServerBook address lubuntu1 10.0.2.3/32
set security address-book ServerBook address lubuntu2 10.0.2.4/32
set security address-book ServerBook address-set lubuntuAS address lubuntu1
set security address-book ServerBook address-set lubuntuAS address lubuntu2
set security address-book ServerBook attach zone trust
set security screen ids-option untrust-screen icmp ping-death
set security screen ids-option untrust-screen ip source-route-option
set security screen ids-option untrust-screen ip tear-drop
set security screen ids-option untrust-screen tcp syn-flood alarm-threshold 1024
set security screen ids-option untrust-screen tcp syn-flood attack-threshold 200
set security screen ids-option untrust-screen tcp syn-flood source-threshold 1024
set security screen ids-option untrust-screen tcp syn-flood destination-threshold 2048
set security screen ids-option untrust-screen tcp syn-flood timeout 20
set security screen ids-option untrust-screen tcp land
set security policies from-zone trust to-zone trust policy default-permit match source-address any
set security policies from-zone trust to-zone trust policy default-permit match destination-address any
set security policies from-zone trust to-zone trust policy default-permit match application any
set security policies from-zone trust to-zone trust policy default-permit then permit
set security policies from-zone trust to-zone untrust policy default-permit match source-address any
set security policies from-zone trust to-zone untrust policy default-permit match destination-address any
set security policies from-zone trust to-zone untrust policy default-permit match application any
set security policies from-zone trust to-zone untrust policy default-permit then permit
set security policies from-zone untrust to-zone servers policy RA-NCP-Access match source-address any
set security policies from-zone untrust to-zone servers policy RA-NCP-Access match destination-address any
set security policies from-zone untrust to-zone servers policy RA-NCP-Access match application any
set security policies from-zone untrust to-zone servers policy RA-NCP-Access then permit
set security policies from-zone untrust to-zone trust policy Allow_all match source-address any
set security policies from-zone untrust to-zone trust policy Allow_all match destination-address lubuntuAS
set security policies from-zone untrust to-zone trust policy Allow_all match application any
set security policies from-zone untrust to-zone trust policy Allow_all then permit
set security policies from-zone untrust to-zone trust policy Allow_all then log session-init
set security policies from-zone untrust to-zone trust policy Allow_all then log session-close
set security zones security-zone trust tcp-rst
set security zones security-zone trust host-inbound-traffic system-services any-service
set security zones security-zone trust interfaces ge-0/0/1.0
set security zones security-zone untrust screen untrust-screen
set security zones security-zone untrust host-inbound-traffic system-services ike
set security zones security-zone untrust host-inbound-traffic system-services ping
set security zones security-zone untrust host-inbound-traffic system-services ssh
set security zones security-zone untrust host-inbound-traffic system-services all
set security zones security-zone untrust interfaces ge-0/0/2.0
set security zones security-zone untrust interfaces st0.1
set security zones security-zone servers
set interfaces ge-0/0/1 unit 0 family inet address 10.0.2.2/24
set interfaces ge-0/0/2 unit 0 family inet address 10.0.3.2/24
set interfaces fxp0 unit 0 family inet dhcp
set interfaces st0 unit 1 family inet
set access profile RA-NCP-Profile client NCP-user1 firewall-user password "$9$g34ZjHkPTQnjiApB1hc"
set access profile RA-NCP-Profile address-assignment pool RA-NCP-pool
set access address-assignment pool RA-NCP-pool family inet network 192.168.100.0/24
set access address-assignment pool RA-NCP-pool family inet xauth-attributes primary-dns 8.8.8.8/32
set routing-instances ri-ge3 interface ge-0/0/3.0
set routing-instances ri-ge3 instance-type virtual-router

NCP-e CLient setup

Create a New connect:

Configuration > Profile: Add > name= RA-NCP-LB ( LB for Learning Byte)

Communication Medium: LAN (over IP)

GW / tunnel endpoint: 10.0.3.2

no certiifcate for Authentication

VPN user ID: NCP-user1 / lab123

DFS-grpu: group19

local IDE (IKE): user@LB.net

Edit Profile

IPsec general Settings:

Exch Mode: aggressive ( behind NAT modem )

IKE Policy: PSK

IKEv2 DH Group: DH19

PFS Group: DH19 (prime256v1 )

Identities:

Pre-shared key: secret: juniper123

Show commands

show security ike security-associations 10.100.10.1 detail

Exchange type: aggressive
Local IP / Remote IP@
Remote Access Client Info: Exclusive Client ( from NCP-E)
Peer ike-id: user@LB.net

show security ipsec security-associations vpn-name RA-NCP-VPN

phase 2 security assocation

show security ike active-peer details

Peer IKE-ID used
Assigned network attributes ( IP@< netmask, DNS, . . . )

show security ike active-peer aaa-username bob

show subscribers client-type xauth

show subscribers client-type xauth username bob <detail.

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Versions Compared

Old Version 32

New Version Current

Key