Changes

Jump to navigation Jump to search

VPN (view source)

Revision as of 19:10, 15 November 2020

6,161 bytes added ,  5 years ago
→‎Softether
Line 299: Line 299:  
Calling tinc with -k or --kill option will cause it to automatically unregister itself.
 
Calling tinc with -k or --kill option will cause it to automatically unregister itself.
   −
== Softether ==
+
== SoftEther ==
 
SoftEther VPN is an Open-Source Free Cross-platform Multi-protocol VPN Program, that is an academic project from the University of Tsukuba in Japan.
 
SoftEther VPN is an Open-Source Free Cross-platform Multi-protocol VPN Program, that is an academic project from the University of Tsukuba in Japan.
   Line 310: Line 310:  
*Embedded dynamic-DNS and NAT-traversal
 
*Embedded dynamic-DNS and NAT-traversal
 
*SSL-VPN (HTTPS) and support for 6 major VPN protocols: [http://www.softether.org/1-features/1._Ultimate_Powerful_VPN_Connectivity#Support_OpenVPN_Protocol OpenVPN], [http://www.softether.org/4-docs/2-howto/9.L2TPIPsec_Setup_Guide_for_SoftEther_VPN_Server IPSEC], [http://www.softether.org/4-docs/2-howto/9.L2TPIPsec_Setup_Guide_for_SoftEther_VPN_Server L2TP], [http://www.softether.org/1-features/1._Ultimate_Powerful_VPN_Connectivity#Support_Microsoft_SSTP_VPN_Protocol MS-SSTP], [http://www.softether.org/4-docs/2-howto/9.L2TPIPsec_Setup_Guide_for_SoftEther_VPN_Server/6.Cisco_IOS_L2TPv3%2F%2F%2F%2FIPsec_Edge-VPN_Router_Setup L2TPv3], and [http://www.softether.org/3-spec EtherIP])
 
*SSL-VPN (HTTPS) and support for 6 major VPN protocols: [http://www.softether.org/1-features/1._Ultimate_Powerful_VPN_Connectivity#Support_OpenVPN_Protocol OpenVPN], [http://www.softether.org/4-docs/2-howto/9.L2TPIPsec_Setup_Guide_for_SoftEther_VPN_Server IPSEC], [http://www.softether.org/4-docs/2-howto/9.L2TPIPsec_Setup_Guide_for_SoftEther_VPN_Server L2TP], [http://www.softether.org/1-features/1._Ultimate_Powerful_VPN_Connectivity#Support_Microsoft_SSTP_VPN_Protocol MS-SSTP], [http://www.softether.org/4-docs/2-howto/9.L2TPIPsec_Setup_Guide_for_SoftEther_VPN_Server/6.Cisco_IOS_L2TPv3%2F%2F%2F%2FIPsec_Edge-VPN_Router_Setup L2TPv3], and [http://www.softether.org/3-spec EtherIP])
 +
 +
====Cisco L2TPv3====
 +
Use the setup of SoftEther [https://www.softether.org/4-docs/2-howto/9.L2TPIPsec_Setup_Guide_for_SoftEther_VPN_Server/6.Cisco_IOS_L2TPv3%2F%2F%2F%2FIPsec_Edge-VPN_Router_Setup here] as a guide for an L2TPv3 connection to a Cisco device.
 +
 +
=====SoftEther settings=====
 +
Now make the following adjustments to the IPSEC/L2TPv3 settings shown there:
 +
 +
* Under IPSEC/L2TP setting select the checkbox for Enable EtherIP/L2TPv3 over IPsec Server Function
 +
* Select EtherIP / L2TP Detail Settings
 +
* ISAKMP Phase 1 ID: Specify local IP address of Cisco device here
 +
* Fill in username/password settings
 +
 +
* Under Virtual Hub management
 +
* Select Virtual NAT and virtual DHCP server function
 +
* Secure NAT settings wtill be used to set Virtual DHCP server settings
 +
 +
{| class="wikitable" style="text-align: center; width: 85%"
 +
|+ Ports used by Softether for this configuration
 +
! Type
 +
! Port #
 +
|-
 +
| UDP
 +
| 500
 +
|-
 +
| UDP
 +
| 4500
 +
|-
 +
| UDP
 +
| 1701
 +
|}
 +
 +
* Encryption:  If you have an issue with using AES during your initial testing, try using DES or 3DES.  Once you have the connection established try switching to a more secure algorithm.
 +
 +
=====Cisco config=====
 +
And then use the following config below on your Cisco device instead of what is listed on the SoftEther site to get L2TPv3 working:
 +
 +
{| class="wikitable" style="text-align: center; width: 85%"
 +
|+ Information used in this example
 +
! Local IP addess
 +
! Peer IP (SoftEhter Public IP)
 +
! Pre-shared key
 +
|-
 +
| 192.168.100.100 (ISAKMP Phase 1 ID)
 +
| 1.1.1.100
 +
| CHANGEME
 +
|}
 +
 +
* Note: By default Cisco may have NAT-Traversal enabled.  This settings is not required.
 +
 +
* Specify the L2TPv3 settings and interface (change FastEterhnet0/0 to match your device's interface).
 +
 +
<pre>
 +
pseudowire-class L2TPv3
 +
  encapsulation l2tpv3
 +
  ip local interface FastEthernet0/0
 +
</pre>
 +
 +
* Note: You can chance the pseudowire-class interface's name from L2TPv3 to something more descriptive if you want.
 +
 +
* ISAKMP settings:
 +
 +
<pre>
 +
crypto isakmp policy 1
 +
  encr aes 256
 +
  authentication pre-share
 +
  group 2
 +
crypto isakmp key CHANGEME address 1.1.1.100
 +
crypto isakmp keepalive 10 periodic
 +
</pre>
 +
 +
Note: You can use AES 256 encryption here.  DH group uses type 2 1024 bit encryption.
 +
 +
* IPSEC settings:
 +
 +
<pre>
 +
crypto ipsec transform-set IPSEC esp-3des esp-sha-hmac
 +
  mode transport
 +
crypto ipsec fragmentation after-encryption
 +
</pre>
 +
 +
Note:  3des is being used here in this example.  If you put this tunnel into production make sure you change the cipher used to AES!!!
 +
 +
* Cryptographic map:
 +
 +
<pre>
 +
crypto map MAP 1 ipsec-isakmp
 +
  set peer 1.1.1.100
 +
  set transform-set IPSEC
 +
  match address IPSEC_MATCH_RULE
 +
</pre>
 +
 +
* Interface configuration
 +
 +
<pre>
 +
interface FastEthernet0/0
 +
  ip address 192.168.100.100 255.255.255.0
 +
  no ip proxy-arp
 +
  duplex auto
 +
  speed auto
 +
  crypto map MAP
 +
</pre>
 +
 +
Note:  FastEthernet0/0 uses the local IP address specified above and has the crypto map applied.
 +
 +
* Use FastEthernet0/1 as the interface for the tunnel
 +
 +
<pre>
 +
interface FastEthernet0/1
 +
  no ip address
 +
  duplex auto
 +
  speed auto
 +
  no cdp enable
 +
  xconnect 1.1.1.100 1 encapsulation l2tpv3 pw-class L2TPv3
 +
  bridge-group 1
 +
</pre>
 +
 +
* Access list:
 +
 +
<pre>
 +
ip access-list extended IPSEC_MATCH_RULE
 +
  permit 115 any any
 +
</pre>
 +
 +
* Now connect a device to FastEthernet0/1.  It should get a DHCP lease from SoftEther and be on the network.
 +
 +
=====Troubelshooting=====
 +
To troubleshoot the tunnel use the following commands:
 +
 +
<pre>
 +
debug crypt isakmp
 +
debug crypt ipsec
 +
debug l2tp all
 +
</pre>
 +
 +
* Show ISAKMP SA status:
 +
 +
<pre>
 +
#show crypto isakmp sa
 +
IPv4 Crypto ISAKMP SA
 +
dst            src            state          conn-id status
 +
1.1.1.100      192.168.100.100    QM_IDLE          1011 ACTIVE
 +
 +
IPv6 Crypto ISAKMP SA
 +
 +
・IPSec
 +
#show crypto ipsec sa
 +
 +
interface: FastEthernet0/0
 +
    Crypto map tag: MAP, local addr 192.168.100.100
 +
 +
  protected vrf: (none)
 +
  local  ident (addr/mask/prot/port): (0.0.0.0/0.0.0.0/115/0)
 +
  remote ident (addr/mask/prot/port): (0.0.0.0/0.0.0.0/115/0)
 +
  current_peer 1.1.1.100 port 4500
 +
    PERMIT, flags={origin_is_acl,}
 +
    #pkts encaps: 54342, #pkts encrypt: 54342, #pkts digest: 54342
 +
    #pkts decaps: 179917, #pkts decrypt: 179917, #pkts verify: 179917
 +
    #pkts compressed: 0, #pkts decompressed: 0
 +
    #pkts not compressed: 0, #pkts compr. failed: 0
 +
    #pkts not decompressed: 0, #pkts decompress failed: 0
 +
    #send errors 23, #recv errors 0
 +
 +
    local crypto endpt.: 192.168.100.100, remote crypto endpt.: 1.1.1.100
 +
    path mtu 1500, ip mtu 1500, ip mtu idb FastEthernet0/0
 +
    current outbound spi: 0x48E82D7A(1223175546)
 +
    PFS (Y/N): N, DH group: none
 +
 +
    inbound esp sas:
 +
      spi: 0x1B68FD22(459865378)
 +
        transform: esp-3des esp-sha-hmac ,
 +
        in use settings ={Tunnel UDP-Encaps, }
 +
        conn id: 2107, flow_id: NETGX:107, sibling_flags 80000046, crypto map: MAP
 +
        sa timing: remaining key lifetime (k/sec): (4386973/1557)
 +
        IV size: 8 bytes
 +
        replay detection support: Y
 +
        Status: ACTIVE
 +
 +
    inbound ah sas:
 +
 +
    inbound pcp sas:
 +
 +
    outbound esp sas:
 +
      spi: 0x48E82D7A(1223175546)
 +
        transform: esp-3des esp-sha-hmac ,
 +
        in use settings ={Tunnel UDP-Encaps, }
 +
        conn id: 2108, flow_id: NETGX:108, sibling_flags 80000046, crypto map: MAP
 +
        sa timing: remaining key lifetime (k/sec): (4386975/1557)
 +
        IV size: 8 bytes
 +
        replay detection support: Y
 +
        Status: ACTIVE
 +
 +
    outbound ah sas:
 +
 +
    outbound pcp sas:
 +
</pre>
 +
 +
* Check L2TP session:
 +
 +
<pre>
 +
#show l2tp session
 +
L2TP Session Information Total tunnels 1 sessions 1
 +
 +
LocID      RemID      TunID      Username, Intf/      State  Last Chg Uniq ID
 +
                                Vcid, Circuit
 +
23239**** 1900**** 2306***** 1, Fa0/1            est    01:32:52 1
 +
</pre>
 +
 +
* Check L2TP tunnel:
 +
 +
<pre>
 +
L2TP Tunnel Information Total tunnels 1 sessions 1
 +
LocTunID  RemTunID  Remote Name  State  Remote Address  Sessn L2TP Class/
 +
                                                          Count VPDN Group
 +
230**** 1          ******* est    1.1.1.100  1    l2tp_default_cl
 +
</pre>
 +
 +
Note: If you use AES for IPSEC it will become TunID 0.
    
== WireGuard ==
 
== WireGuard ==
Retrieved from "http://wiki.pttlink.org/wiki/Special:MobileDiff/2006"

Navigation menu