89.4. iPhone/iPad native IPsec VPN client with Aggressive Mode

89.4. iPhone/iPad native IPsec VPN client with Aggressive Mode
	Chapter 89. IPsec clients

When clients have dynamic IP address the MAIN mode requires the SAME PSK for all users, on the contrary AGGRESSIVE mode allows individual PSK. For this reason it is usually preferred in this situation.

89.4.1. Checklist of parameters

This table show the parameters of iPhone/iPad native IPsec and their corresponding parameters in Abilis configuration.

Table 89.5. Checklist of parameters

The iPhone/iPad native IPsec parameter	Abilis IKE Table	Abilis IKE Table parameter
Server	HOST	`LOC-IP`
Account	HOST	`XAUTH-USER`
Password	HOST	`XAUTH-PWD`
Group Name	HOST	`KEY-ID`
Secret	PSK	`KEY`

89.4.2. Configuring iPhone/iPad native IPsec VPN client

Suppose that Abilis is configured in the following way. Refer to Section 81.19.2, “How to configure a RAS using IPSEC VPN server with iPhone/iPad or Mac” for the configuration of IPsec and IKE resources.

[22:54:53] ABILIS_CPX:d ike host:0

-------------------------------------------------------------------------------
HOST: NAME:                              LIFETIME: HASH:     DPD:    DPD-ACTION:
      LOCIP:          NATT:   MODE:      MODE-CFG: DH:               DPD-DELAY:
      REMIP:          SIDE:   AUTH:      XAUTH:    CIPHER:   SA-TRY: DPD-TOUT:
      XAUTH-USER:                        XAUTH-PWD:
      -- PSK ID ---------------------------------------------------------------
      ID-TYPE:        IP:/ID:
      PEER-ID-TYPE:   PEER-IP:/PEER-ID:
      -- RSA Cert -------------------------------------------------------------
      CERT-SEND:      ASN1-DN:
      CERT-PEER:      PEER-ASN1-DN:
      CERT-VERIFY:
-------------------------------------------------------------------------------
0     iOS_Aggressive                     3600      SHA1      YES     STOP
      080.080.080.080 SYS     AGGRESSIVE REQUEST   MODP2048          30
      *               INSIDE  PSK        SERVER    AES256    3       120
      test                               ********
      -- PSK ID ---------------------------------------------------------------
      LOCIP           
      KEY-ID          abilis
-------------------------------------------------------------------------------

[22:54:53] ABILIS_CPX:d ike psk:1

-------------------------------------------------------------------------------
PSK: KEY:     PEER-ID-TYPE:  PEER-IP:/PEER-ID:
-------------------------------------------------------------------------------
1    ******** KEY-ID         abilis

[22:54:53] ABILIS_CPX:d ike cli:0

-------------------------------------------------------------------------------
CLI:  NAME:                                LIFETIME: ESP:        AH:
HOST: NET-LOC:           RULE:  PASSIVE:   PFS:      ESP-AUTH:   AH-AUTH:
      NET-REM:                  PERMANENT: TUNNEL:   ESP-CIPHER: MODE-CFG-DNS:
-------------------------------------------------------------------------------
0     iOS_Aggressive                       28800     YES         NO
0     000.000.000.000/00 IPSEC  YES        NO        SHA1        SHA1
      172.031.101.006/32        YES        YES       AES256      008.008.008.008
-------------------------------------------------------------------------------

To configure an Apple iOS device for IPsec VPN connection with Abilis:

Click the Settings icon on your iOS device.
Then click General:
Click VPN:
Now click Add VPN Configuration:
Click Type and then select IPSec:
Now enter the configuration parameters:
Click Done in the upper-right corner and you should now see this screen:
Click the Not Connected slider button and wait for it say Connected. The VPN icon appears in the status bar to indicate that the connection is successful.
In the future, you can turn the VPN on/off very quickly by simply going to Settings > VPN and toggling the slider button.
Tip
Interesting chapters:
Section 81.19.2, “How to configure a RAS using IPSEC VPN server with iPhone/iPad or Mac”;
Section 49.6, “Aggressive Mode: Example of IPSEC configuration”.


89.3. iPhone/iPad native IPsec VPN client with Main Mode		89.5. Android NCP VPN Client