Estou configurando o LT2p sobre o IPSec na minha nova instalação do Centos 6.3.
Eu tenho o iptables corado, permitir tudo.
Sempre que tento me conectar, recebo uma 'sem resposta da vpn' e nothi
Aqui está o meu arquivo ipsec.conf (o servidor é 1.2.3.4):
config setup
nat_traversal=yes
virtual_private=%v4:10.0.0.0/8,%v4:192.168.0.0/16,%v4:172.16.0.0/12
oe=off
protostack=netkey
conn L2TP-PSK-NAT
rightsubnet=vhost:%priv
also=L2TP-PSK-noNAT
conn L2TP-PSK-noNAT
authby=secret
pfs=no
auto=add
keyingtries=3
rekey=no
ikelifetime=8h
keylife=1h
type=transport
left=1.2.3.4
leftprotoport=17/1701
right=%any
rightprotoport=17/%any
Meus /etc/ipsec.secrets
1.2.3.4 %any: PSK "password"
Meu sysctl.conf (linhas indicadas)
net.ipv4.ip_forward = 1
net.ipv4.conf.default.rp_filter = 0
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.default.send_redirects = 0
net.ipv4.conf.all.log_martians = 0
net.ipv4.conf.default.log_martians = 0
net.ipv4.conf.default.accept_source_route = 0
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.default.accept_redirects = 0
net.ipv4.icmp_ignore_bogus_error_responses = 1
Veja o que "ipsec verify" fornece:
# ipsec verify
Checking your system to see if IPsec got installed and started correctly:
Version check and ipsec on-path [OK]
Linux Openswan U2.6.32/K2.6.32-279.19.1.el6.x86_64 (netkey)
Checking for IPsec support in kernel [OK]
SAref kernel support [N/A]
NETKEY: Testing for disabled ICMP send_redirects [OK]
NETKEY detected, testing for disabled ICMP accept_redirects [OK]
Checking that pluto is running [OK]
Pluto listening for IKE on udp 500 [OK]
Pluto listening for NAT-T on udp 4500 [OK]
Checking for 'ip' command [OK]
Checking /bin/sh is not /bin/dash [WARNING]
Checking for 'iptables' command [OK]
Opportunistic Encryption Support [DISABLED]
E eu vejo que o xl2tpd está escutando em 1701 / udp:
udp 0 0 1.2.3.4:1701 0.0.0.0:* 2096/xl2tpd