Ipsec xl2tpd verbindung nicht möglich

Hi,

Nachdem ich mein serverseitiges problem gelöst habe, scheint es als ob meine confi nicht stimmt...

xl2tpd.conf :

# /etc/xl2tpd/xl2tpd.conf 
[global]
listen-addr = 134.0.25.###
auth file = /etc/vp/l2tp-secret
 
[lns]
ip range = 10.0.0.2 - 10.0.0.12
length bit = yes
local ip = 10.0.0.1
refuse chap = yes
refuse pap = yes
require authentication = yes
unix authentication = yes
pppoptfile = /etc/vpn/pppopt.xl2tpd
challenge = yes

l2tp-secret :

# Secrets for authenticating l2tp tunnels
# us    them    secret
# *             marko blah2
# zeus          marko   blah
# *     *       interop
*       *       l2tppasswd
 

pppopt.xl2tpd :

ipcp-accept-localipcp-accept-remote
ms-dns 8.8.8.8
noccp
noauth
crtscts
idle 1800
mtu 1200
mru 1200
nodefaultroute
debug
lock
proxyarp
connect-delay 5000

ipsec.conf :

# /etc/ipsec.conf
version 2.0 # conforms to second version of ipsec.conf specification
 
config setup
        nat_traversal=yes
        virtual_private=%v4:10.0.0.0/8
        protostack=netkey #protostack=mast # used for SAref + MAST only
        interfaces="%defaultroute"
        oe=off
 
conn l2tp-psk
        authby=secret
        pfs=no
        auto=add
        rekey=no
        # overlapip=yes         # for SAref + MAST
        # sareftrack=yes        # for SAref + MAST
        type=transport
        left=134.0.25.###
        leftprotoport=17/1701
        #
        # The remote user.
        #
        right=%any
        rightprotoport=17/%any
        rightsubnet=vhost:%priv,%no
 

<ipsec verify ergibt :

 Checking your system to see if IPsec got installed and started correctly:Version check and ipsec on-path                                 [OK]
Linux Openswan U2.6.28/K3.0.0-12-server (netkey)
Checking for IPsec support in kernel                            [OK]
NETKEY detected, testing for disabled ICMP send_redirects       [OK]
NETKEY detected, testing for disabled ICMP accept_redirects     [FAILED]
 
  Please disable /proc/sys/net/ipv4/conf/*/accept_redirects
  or NETKEY will accept bogus ICMP redirects!
 
Checking that pluto is running                                  [OK]
Pluto listening for IKE on udp 500                              [OK]
Pluto listening for NAT-T on udp 4500                           [OK]
Two or more interfaces found, checking IP forwarding            [OK]
Checking NAT and MASQUERADEing
Checking for 'ip' command                                       [OK]
Checking for 'iptables' command                                 [OK]
Opportunistic Encryption Support                                [DISABLED] 

Kann mir da jemand weiter helfen?

Lg Richard

Bitte markiere auch die Kommentare, die zur Lösung des Beitrags beigetragen haben

Content-ID: 184059

Url: https://administrator.de/forum/ipsec-xl2tpd-verbindung-nicht-moeglich-184059.html

Ausgedruckt am: 21.04.2025 um 19:04 Uhr

3 Kommentare

Neuester Kommentar

Exakte Fehlermeldung: Die Netzwerkverbindung kann nicht hergestellt werden. Ip stimmt user und pass (unix) auch

So ich bin nun ein wenig weiter gekommen...

Die vpn verbindung kommt nun wohl zustande bricht aber stets nach ca. 10 sek ab.

Die aktuellen configs:

Xl2tpd.conf :

 [global]                                                                ; Global parameters: port = 1701                                                    ; * Bind to port 1701
auth file = /etc/xl2tpd/l2tp-secrets    ; * Where our challenge secrets are
 
[lns default]                                                   ; Our fallthrough LNS definition
;exclusive = no                                         ; * Only permit one tunnel per host
ip range = 10.10.0.2-10.10.0.20         ; * Allocate from this IP range
local ip = 10.10.0.1                            ; * Our local IP to use
length bit = yes                                                ; * Use length bit in payload?
unix authentication = yes                               ; * Use /etc/passwd for auth.
 

Ipsec.conf :

 # /etc/ipsec.conf - Openswan IPsec configuration file 
version 2.0     # conforms to second version of ipsec.conf specification
 
# basic configuration
config setup
        # NAT-TRAVERSAL support, see README.NAT-Traversal
        nat_traversal=yes
        # exclude networks used on server side by adding %v4:!a.b.c.0/24
        virtual_private=%v4:10.0.0.0/8,%v4:192.168.0.0/16,%v4:172.16.0.0/12
        # OE is now off by default. Uncomment and change to on, to enable.
        oe=off
        # which IPsec stack to use. auto will try netkey, then klips then mast
        protostack=auto
 
 
conn testvpn
        left=134.0.25.###
        right=%any

Ipsec verify :

 root@vsrv#####:/etc/xl2tpd# ipsec verify
Checking your system to see if IPsec got installed and started correctly:
Version check and ipsec on-path                                 [OK]
Linux Openswan U2.6.28/K3.0.0-12-server (netkey)
Checking for IPsec support in kernel                            [OK]
NETKEY detected, 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 for 'iptables' command                                 [OK]
Opportunistic Encryption Support                                [DISABLED]
 

Kann da jemand helfen?

LG

So kleine info zwichendurch...

tail -f /var/log/auth.log

 
Apr 26 02:58:06 vsrv##### pluto[6828]: packet from 89.204.130.###:20762: received Vendor ID payl
Apr 26 02:58:26 vsrv##### pluto[6828]: packet from 89.204.130.###:20762: received Vendor ID payload [RFC 3947] method set to=109
Apr 26 02:58:26 vsrv##### pluto[6828]: packet from 89.204.130.###:20762: received Vendor ID payload [draft-ietf-ipsec-nat-t-ike-02] meth=107, but already using
method 10958:06 vsrv##### pluto[6828]: packet from 89.204.130.###:20762: received Vendor ID payl
Apr 26 02:58:26 vsrv##### pluto[6828]: packet from 89.204.130.###:20762: received Vendor ID payload [draft-ietf-ipsec-nat-t-ike-02_n] meth=106, but already usin
g method 109:06 vsrv##### pluto[6828]: packet from 89.204.130.###:20762: received Vendor ID payl
Apr 26 02:58:26 vsrv##### pluto[6828]: packet from 89.204.130.###:20762: received Vendor ID payload [draft-ietf-ipsec-nat-t-ike-00]
Apr 26 02:58:26 vsrv##### pluto[6828]: packet from 89.204.130.###:20762: ignoring Vendor ID payload [FRAGMENTATION 80000000]
Apr 26 02:58:26 vsrv##### pluto[6828]: packet from 89.204.130.###:20762: initial Main Mode message received on 134.0.25.###:500 but no connection has been autho
rized with policy=PSK6856 pluto[6828]: packet from 89.204.130.###:20762: received Vendor ID payl 

Dieser Block erscheint pro versuch 4 mal...dann kommt auf meim android vpn verbunden... Dann nach paar sec verbindung abgebrochen

Lg

gelöstFrage Linux

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