Estoy configurando una VPN usando strongSwan entre una instancia de Linux en una instancia de Amazon EC2 y una red remota a través de su concentrador Cisco. Necesito enrutar paquetes desde la propia instancia de Linux a una máquina en la subred remota.
La conexión se establece correctamente, pero no se enrutan paquetes.
Creo que necesito establecer algunas reglas de enrutamiento específicas, ¿cómo debo hacer eso?
Software
- Kernel de Linux 3.5.0-41,
- Ubuntu 12.10,
- strongSwan 5.1.1 (construido a partir de la fuente),
- iptables: sin reglas.
Red
Local
- IP elástica de Amazon: 56.xxx
- IP de LAN pública: 172.xxx
- Subred virtual local: 10.254.0.0/16
- IP virtual local: 10.254.5.174
Remoto
- IP pública del concentrador de Cisco: 62.xxx
- Subred remota: 10.192.0.0/12
Configuración
ipsec.conf
config setup
conn %default
keyexchange = ikev1
type = tunnel
ikelifetime = 86400
keylife = 28800
keyingtries = %forever
esp = 3des-sha
ike = 3des-md5-modp1024
forceencaps = yes
leftauth = psk
rightauth = psk
conn myconnection
left = 172.x.x.x
leftsubnet = 10.254.0.0/16
leftsourceip = 10.254.5.174
leftfirewall = yes
right = 62.x.x.x
rightsubnet = 10.192.0.0/12
auto = route
include /var/lib/strongswan/ipsec.conf.inc
strongswan.conf
charon {
cisco_unity = yes
install_routes = yes
install_virtual_ip = yes
threads = 16
plugins {
sql {
loglevel = -1
}
}
filelog {
/var/log/charon.log {
time_format = %b %e %T
default = 3
flush_line = yes
}
}
}
pluto {
}
libstrongswan {
}
estado de ipsec
# ipsec statusall
Status of IKE charon daemon (strongSwan 5.1.1, Linux 3.5.0-41-generic, x86_64):
uptime: 4 days, since Jan 22 14:24:08 2014
malloc: sbrk 270336, mmap 0, used 222672, free 47664
worker threads: 11 of 16 idle, 5/0/0/0 working, job queue: 0/0/0/0, scheduled: 3445
loaded plugins: charon aes des rc2 sha1 sha2 md5 random nonce x509 revocation constraints pubkey pkcs1 pkcs7 pkcs8 pkcs12 pgp dnskey sshkey pem fips-prf gmp xcbc cmac hmac attr kernel-netlink resolve socket-default stroke updown xauth-generic
Listening IP addresses:
172.x.x.x
54.x.x.x
Connections:
smsbrick: 172.x.x.x...62.x.x.x IKEv1
smsbrick: local: [172.x.x.x] uses pre-shared key authentication
smsbrick: remote: [62.x.x.x] uses pre-shared key authentication
smsbrick: child: 10.254.0.0/16 === 10.192.0.0/12 TUNNEL
Routed Connections:
smsbrick{1}: ROUTED, TUNNEL
smsbrick{1}: 10.254.0.0/16 === 10.192.0.0/12
Security Associations (1 up, 0 connecting):
smsbrick[8150]: ESTABLISHED 1 second ago, 172.x.x.x[172.x.x.x]...62.x.x.x[62.x.x.x]
smsbrick[8150]: IKEv1 SPIs: xxxxxxxxxxxxxx_i* xxxxxxxxxxxxx_r, pre-shared key reauthentication in 23 hours
smsbrick[8150]: IKE proposal: 3DES_CBC/HMAC_MD5_96/PRF_HMAC_MD5/MODP_1024
smsbrick[8150]: Tasks queued: QUICK_MODE
smsbrick[8150]: Tasks active: MODE_CONFIG
ip xfrm
# ip xfrm policy
src 10.192.0.0/12 dst 10.254.0.0/16
dir fwd priority 3987
tmpl src 62.x.x.x dst 172.x.x.x
proto esp reqid 1 mode tunnel
src 10.192.0.0/12 dst 10.254.0.0/16
dir in priority 3987
tmpl src 62.x.x.x dst 172.x.x.x
proto esp reqid 1 mode tunnel
src 10.254.0.0/16 dst 10.192.0.0/12
dir out priority 3987
tmpl src 172.x.x.x dst 62.x.x.x
proto esp reqid 1 mode tunnel
src 0.0.0.0/0 dst 0.0.0.0/0
socket in priority 0
src 0.0.0.0/0 dst 0.0.0.0/0
socket out priority 0
src 0.0.0.0/0 dst 0.0.0.0/0
socket in priority 0
src 0.0.0.0/0 dst 0.0.0.0/0
socket out priority 0
src ::/0 dst ::/0
socket in priority 0
src ::/0 dst ::/0
socket out priority 0
src ::/0 dst ::/0
socket in priority 0
src ::/0 dst ::/0
socket out priority 0
2
La conexión no está establecida. La conexión parece estar atascada durante la configuración de modo (porque configuró leftsourceip ), verifique el registro en ambos lados para obtener detalles (lo más probable es que el par de Cisco no espere un intercambio de configuración de modo). ¿Ya echaste un vistazo al wiki de strongSwan ?
—
ecdsa