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public:ipsec [2011/01/27 21:51] – Nicopublic:ipsec [2012/03/09 22:43] (current) – [IPSec for FreeBSD's jails communication] typo Nico
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 ====== IPSec for FreeBSD's jails communication ====== ====== IPSec for FreeBSD's jails communication ======
  
-**Abstract**: Here we assume we have two FreeBSD hosts, A using public IP 1.1.1.1 and internal virtual net 192.168.3.0 for jails, and B using public IP 2.2.2.2 and internal net 192.168.6.0 for jails.+**Abstract**: Here we assume we have two FreeBSD hosts, **A** using public IP 1.1.1.1 and internal virtual net 192.168.3.0 for jails, and **B** using public IP 2.2.2.2 and internal net 192.168.6.0 for jails. We need hosts and jails to communicate together, preferably in a crypted way.
  
 ===== Preparation on both hosts ===== ===== Preparation on both hosts =====
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 </code> </code>
  
-===== Separate configuration =====+===== Steps to follow on each host =====
  
 ==== On host A ==== ==== On host A ====
  
-=== /etc/rc.conf ===+=== Configuration === 
 +== /etc/rc.conf ==
  
 <code> <code>
 cloned_interfaces="gif0" cloned_interfaces="gif0"
 ifconfig_gif0="inet 192.168.3.1 192.168.6.1 tunnel 1.1.1.1 2.2.2.2" ifconfig_gif0="inet 192.168.3.1 192.168.6.1 tunnel 1.1.1.1 2.2.2.2"
-static_routes="internalnet1" +static_routes="internalnet2" 
-route_internalnet1="-net 192.168.6.0/24 192.168.6.1"+route_internalnet2="-net 192.168.6.0/24 192.168.6.1" 
 + 
 +ipv6_ifconfig_gif0="2001:db8:ab01::1 2001:db8:ab02::1 prefixlen 128" 
 +ipv6_static_routes="b" 
 +ipv6_route_b="2001:db8:ab02::1 -interface gif0"
  
 ipsec_enable="YES" ipsec_enable="YES"
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 </code> </code>
  
-=== /usr/local/etc/racoon/setkey.conf ===+== /usr/local/etc/racoon/setkey.conf ==
  
 <code> <code>
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 spdadd 192.168.3.0/24 192.168.6.0/24 any -P out ipsec esp/tunnel/1.1.1.1-2.2.2.2/require; spdadd 192.168.3.0/24 192.168.6.0/24 any -P out ipsec esp/tunnel/1.1.1.1-2.2.2.2/require;
 spdadd 192.168.6.0/24 192.168.3.0/24 any -P in  ipsec esp/tunnel/2.2.2.2-1.1.1.1/require; spdadd 192.168.6.0/24 192.168.3.0/24 any -P in  ipsec esp/tunnel/2.2.2.2-1.1.1.1/require;
 +spdadd 2001:db8:ab01::/64 2001:db8:ab02::/64 any -P out ipsec esp/tunnel/2001:db8:ab01::1-2001:db8:ab02::1/require;
 +spdadd 2001:db8:ab02::/64 2001:db8:ab01::/64 any -P out ipsec esp/tunnel/2001:db8:ab02::1-2001:db8:ab01::1/require;
 </code> </code>
  
-=== /usr/local/etc/racoon/psk.txt ===+== /usr/local/etc/racoon/psk.txt ==
  
 <code> <code>
Line 57: Line 64:
 # IPv4/v6 addresses # IPv4/v6 addresses
 # #
-2.2.2.2     myfookinunforgettablepassword+2.2.2.2           myfookinunforgettablepassword 
 +2001:db8:ab02::1  myfookinunforgettablepassword
 </code> </code>
  
-=== /usr/local/etc/racoon/racoon.conf ===+== /usr/local/etc/racoon/racoon.conf ==
  
 <code> <code>
Line 87: Line 95:
 { {
         isakmp          1.1.1.1 [500];         isakmp          1.1.1.1 [500];
 +        isakmp          2001:db8:ab01::1 [500];
 +        
 } }
  
 remote 2.2.2.2 [500] remote 2.2.2.2 [500]
 +{
 +        exchange_mode   main,aggressive;
 +        doi             ipsec_doi;
 +        situation       identity_only;
 +        my_identifier   address 1.1.1.1;
 +        peers_identifier        address 2.2.2.2;
 +        lifetime        time 8 hour;
 +        passive         off;
 +        proposal_check  obey;
 +       nat_traversal   off;
 +        generate_policy off;
 +
 +                        proposal {
 +                                encryption_algorithm    blowfish;
 +                                hash_algorithm          md5;
 +                                authentication_method   pre_shared_key;
 +                                lifetime time           30 sec;
 +                                dh_group                1;
 +                        }
 +}
 +
 +remote 2001:db8:ab02::1 [500]
 { {
         exchange_mode   main,aggressive;         exchange_mode   main,aggressive;
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 } }
  
 +sainfo  address 2001:db8:ab01::/64 any address 2001:db8:ab02::/64 any    # address $network/$netmask $type address $network/$netmask $type ( $type being any or esp)
 +{                               # $network must be the two internal networks you are joining.
 +        pfs_group       1;
 +        lifetime        time    36000 sec;
 +        encryption_algorithm    blowfish,3des,des;
 +        authentication_algorithm        hmac_md5,hmac_sha1;
 +        compression_algorithm   deflate;
 +}
 +sainfo  address 2001:db8:ab02::/64 any address 2001:db8:ab01::/64 any    # address $network/$netmask $type address $network/$netmask $type ( $type being any or esp)
 +{                               # $network must be the two internal networks you are joining.
 +        pfs_group       1;
 +        lifetime        time    36000 sec;
 +        encryption_algorithm    blowfish,3des,des;
 +        authentication_algorithm        hmac_md5,hmac_sha1;
 +        compression_algorithm   deflate;
 +}
 +</code>
 +
 +
 +=== Start ===
 +
 +== Manual startup ==
 +
 +<code>
 +# ifconfig gif0 create
 +# ifconfig gif0 192.168.3.1 192.168.6.1
 +# ifconfig gif0 tunnel 1.1.1.1 2.2.2.2
 +# ifconfig gif0 inet6 2001:db8:ab01::1 2001:db8:ab02::1 prefixlen 128
 +# route add 192.168.6.0 192.168.6.1 255.255.255.0
 +# route add -inet6 2001:db8:ab02:: -interface gif0
 +# /etc/rc.d/ipsec start
 +# /usr/local/etc/rc.d/racoon start
 +</code>
 +
 +== Automatic startup ==
 +
 +<code>
 +# reboot
 </code> </code>
 +:-)
  
 ==== On host B ==== ==== On host B ====
  
-=== /etc/rc.conf ===+== /etc/rc.conf ==
  
 <code> <code>
Line 139: Line 210:
 static_routes="internalnet1" static_routes="internalnet1"
 route_internalnet1="-net 192.168.3.0/24 192.168.3.1" route_internalnet1="-net 192.168.3.0/24 192.168.3.1"
 +
 +ipv6_ifconfig_gif0="2001:db8:ab02::1 2001:db8:ab01::1 prefixlen 128"
 +ipv6_static_routes="a"
 +ipv6_route_a="2001:db8:ab01::1 -interface gif0"
  
 ipsec_enable="YES" ipsec_enable="YES"
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 </code> </code>
  
-=== /usr/local/etc/racoon/setkey.conf ===+== /usr/local/etc/racoon/setkey.conf ==
  
 <code> <code>
Line 157: Line 232:
 spdadd 192.168.6.0/24 192.168.3.0/24 any -P out ipsec esp/tunnel/2.2.2.2-1.1.1.1/require; spdadd 192.168.6.0/24 192.168.3.0/24 any -P out ipsec esp/tunnel/2.2.2.2-1.1.1.1/require;
 spdadd 192.168.3.0/24 192.168.6.0/24 any -P in  ipsec esp/tunnel/1.1.1.1-2.2.2.2/require; spdadd 192.168.3.0/24 192.168.6.0/24 any -P in  ipsec esp/tunnel/1.1.1.1-2.2.2.2/require;
 +spdadd 2001:db8:ab02::/64 2001:db8:ab01::/64 any -P out ipsec esp/tunnel/2001:db8:ab02::1-2001:db8:ab01::1/require;
 +spdadd 2001:db8:ab01::/64 2001:db8:ab02::/64 any -P out ipsec esp/tunnel/2001:db8:ab01::1-2001:db8:ab02::1/require;
 </code> </code>
  
-=== /usr/local/etc/racoon/psk.txt ===+== /usr/local/etc/racoon/psk.txt ==
  
 <code> <code>
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 # IPv4/v6 addresses # IPv4/v6 addresses
 # #
-1.1.1.1     myfookinunforgettablepassword+1.1.1.1           myfookinunforgettablepassword 
 +2001:db8:ab01::1  myfookinunforgettablepassword
 </code> </code>
  
-=== /usr/local/etc/racoon/racoon.conf ===+== /usr/local/etc/racoon/racoon.conf ==
  
 <code> <code>
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 { {
         isakmp          2.2.2.2 [500];         isakmp          2.2.2.2 [500];
 +        isakmp          2001:db8:ab02::1 [500];
 } }
  
 remote 1.1.1.1 [500] remote 1.1.1.1 [500]
 +{
 +        exchange_mode   main,aggressive;
 +        doi             ipsec_doi;
 +        situation       identity_only;
 +        my_identifier   address 2.2.2.2;
 +        peers_identifier        address 1.1.1.1;
 +        lifetime        time 8 hour;
 +        passive         off;
 +        proposal_check  obey;
 +       nat_traversal   off;
 +        generate_policy off;
 +
 +                        proposal {
 +                                encryption_algorithm    blowfish;
 +                                hash_algorithm          md5;
 +                                authentication_method   pre_shared_key;
 +                                lifetime time           30 sec;
 +                                dh_group                1;
 +                        }
 +}
 +
 +remote 2001:db8:ab01::1 [500]
 { {
         exchange_mode   main,aggressive;         exchange_mode   main,aggressive;
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 } }
  
 +sainfo  address 2001:db8:ab02::/64 any address 2001:db8:ab01::/64 any    # address $network/$netmask $type address $network/$netmask $type ( $type being any or esp)
 +{                               # $network must be the two internal networks you are joining.
 +        pfs_group       1;
 +        lifetime        time    36000 sec;
 +        encryption_algorithm    blowfish,3des,des;
 +        authentication_algorithm        hmac_md5,hmac_sha1;
 +        compression_algorithm   deflate;
 +}
 +sainfo  address 2001:db8:ab01::/64 any address 2001:db8:ab02::/64 any    # address $network/$netmask $type address $network/$netmask $type ( $type being any or esp)
 +{                               # $network must be the two internal networks you are joining.
 +        pfs_group       1;
 +        lifetime        time    36000 sec;
 +        encryption_algorithm    blowfish,3des,des;
 +        authentication_algorithm        hmac_md5,hmac_sha1;
 +        compression_algorithm   deflate;
 +}
 +</code>
 +
 +=== Start ===
 +
 +== Manual startup ==
 +
 +<code>
 +# ifconfig gif0 create
 +# ifconfig gif0 192.168.6.1 192.168.3.1
 +# ifconfig gif0 tunnel 2.2.2.2 1.1.1.1
 +# ifconfig gif0 inet6 2001:db8:ab02::1 2001:db8:ab01::1 prefixlen 128
 +# route add 192.168.3.0 192.168.3.1 255.255.255.0
 +# route add -inet6 2001:db8:ab01:: -interface gif0
 +# /etc/rc.d/ipsec start
 +# /usr/local/etc/rc.d/racoon start
 +</code>
 +
 +== Automatic startup ==
 +
 +<code>
 +# reboot
 +</code>
 +:-)
 +
 +===== Testing =====
 +
 +on host A, run the following command:
 +
 +<code>
 +# tcpdump -i re0 host 2.2.2.2 and dst 1.1.1.1
 +</code>
 +
 +  * example of unencrypted traffic (ping) from B to A, on public IPs
 +
 +<code>
 +23:24:42.762845 IP 2.2.2.2 > 1.1.1.1: ICMP echo request, id 37718, seq 1, length 64
 +23:24:43.791147 IP 2.2.2.2 > 1.1.1.1: ICMP echo request, id 37718, seq 2, length 64
 +</code>
 +
 +  * example of encrypted traffic (ping) from B to A, on private IPs
 +
 +<code>
 +23:27:51.035045 IP 2.2.2.2 > 1.1.1.1: ESP(spi=0x0601db40,seq=0xaf3), length 116
 +23:27:52.063482 IP 2.2.2.2 > 1.1.1.1: ESP(spi=0x0601db40,seq=0xaf4), length 116
 </code> </code>