[Frage] Angriff über OpenVPN?

Hallo,

auf meiner gefreetzten Box habe ich OpenVPN installiert. Kürzlich habe ich entdeckt, dass ich unter "Verbundene Clients" immer einen UNDEF Eintrag habe. Aktuell dieser hier:

Code:

UNDEF 2.247.242.142 Sat Dec 3 11:43:36 2016

Die IP ist von keinem meiner Clients. Im Syslog steht folgendes:

Code:

Dec  3 11:35:10 fritz daemon.err openvpn[18329]: 2.247.242.142:9173 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)

Dec  3 11:35:10 fritz daemon.err openvpn[18329]: 2.247.242.142:9173 TLS Error: TLS handshake failed

Dec  3 11:35:10 fritz daemon.notice openvpn[18329]: 2.247.242.142:9173 SIGUSR1[soft,tls-error] received, client-instance restarting

Dec  3 11:35:12 fritz daemon.notice openvpn[18329]: MULTI: multi_create_instance called

Dec  3 11:35:12 fritz daemon.notice openvpn[18329]: 2.247.242.142:16794 Re-using SSL/TLS context

Dec  3 11:35:12 fritz daemon.notice openvpn[18329]: 2.247.242.142:16794 Control Channel MTU parms [ L:1541 D:166 EF:66 EB:0 ET:0 EL:0 ]

Dec  3 11:35:12 fritz daemon.notice openvpn[18329]: 2.247.242.142:16794 Data Channel MTU parms [ L:1541 D:1450 EF:41 EB:4 ET:0 EL:0 ]

Dec  3 11:35:12 fritz daemon.notice openvpn[18329]: 2.247.242.142:16794 TLS: Initial packet from [AF_INET]2.247.242.142:16794, sid=21fd11d1 2a7da409

Dec  3 11:36:13 fritz daemon.err openvpn[18329]: 2.247.242.142:16794 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)

Dec  3 11:36:13 fritz daemon.err openvpn[18329]: 2.247.242.142:16794 TLS Error: TLS handshake failed

Dec  3 11:36:13 fritz daemon.notice openvpn[18329]: 2.247.242.142:16794 SIGUSR1[soft,tls-error] received, client-instance restarting

Dec  3 11:36:16 fritz daemon.notice openvpn[18329]: MULTI: multi_create_instance called

Dec  3 11:36:16 fritz daemon.notice openvpn[18329]: 2.247.242.142:21445 Re-using SSL/TLS context

Dec  3 11:36:16 fritz daemon.notice openvpn[18329]: 2.247.242.142:21445 Control Channel MTU parms [ L:1541 D:166 EF:66 EB:0 ET:0 EL:0 ]

Dec  3 11:36:16 fritz daemon.notice openvpn[18329]: 2.247.242.142:21445 Data Channel MTU parms [ L:1541 D:1450 EF:41 EB:4 ET:0 EL:0 ]

Dec  3 11:36:16 fritz daemon.notice openvpn[18329]: 2.247.242.142:21445 TLS: Initial packet from [AF_INET]2.247.242.142:21445, sid=49a7f480 cb8e30f6

Dec  3 11:37:16 fritz daemon.err openvpn[18329]: 2.247.242.142:21445 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)

Dec  3 11:37:16 fritz daemon.err openvpn[18329]: 2.247.242.142:21445 TLS Error: TLS handshake failed

Dec  3 11:37:16 fritz daemon.notice openvpn[18329]: 2.247.242.142:21445 SIGUSR1[soft,tls-error] received, client-instance restarting

Dec  3 11:37:19 fritz daemon.notice openvpn[18329]: MULTI: multi_create_instance called

Dec  3 11:37:19 fritz daemon.notice openvpn[18329]: 2.247.242.142:29082 Re-using SSL/TLS context

Dec  3 11:37:19 fritz daemon.notice openvpn[18329]: 2.247.242.142:29082 Control Channel MTU parms [ L:1541 D:166 EF:66 EB:0 ET:0 EL:0 ]

Dec  3 11:37:19 fritz daemon.notice openvpn[18329]: 2.247.242.142:29082 Data Channel MTU parms [ L:1541 D:1450 EF:41 EB:4 ET:0 EL:0 ]

Dec  3 11:37:19 fritz daemon.notice openvpn[18329]: 2.247.242.142:29082 TLS: Initial packet from [AF_INET]2.247.242.142:29082, sid=0c17ab7e 6921fc02

Dec  3 11:38:19 fritz daemon.err openvpn[18329]: 2.247.242.142:29082 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)

Dec  3 11:38:19 fritz daemon.err openvpn[18329]: 2.247.242.142:29082 TLS Error: TLS handshake failed

Dec  3 11:38:19 fritz daemon.notice openvpn[18329]: 2.247.242.142:29082 SIGUSR1[soft,tls-error] received, client-instance restarting

Dec  3 11:38:22 fritz daemon.notice openvpn[18329]: MULTI: multi_create_instance called

Dec  3 11:38:22 fritz daemon.notice openvpn[18329]: 2.247.242.142:5834 Re-using SSL/TLS context

Dec  3 11:38:22 fritz daemon.notice openvpn[18329]: 2.247.242.142:5834 Control Channel MTU parms [ L:1541 D:166 EF:66 EB:0 ET:0 EL:0 ]

Dec  3 11:38:22 fritz daemon.notice openvpn[18329]: 2.247.242.142:5834 Data Channel MTU parms [ L:1541 D:1450 EF:41 EB:4 ET:0 EL:0 ]

Dec  3 11:38:22 fritz daemon.notice openvpn[18329]: 2.247.242.142:5834 TLS: Initial packet from [AF_INET]2.247.242.142:5834, sid=66c13e2e 10182158

Dec  3 11:39:22 fritz daemon.err openvpn[18329]: 2.247.242.142:5834 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)

Dec  3 11:39:22 fritz daemon.err openvpn[18329]: 2.247.242.142:5834 TLS Error: TLS handshake failed

Dec  3 11:39:22 fritz daemon.notice openvpn[18329]: 2.247.242.142:5834 SIGUSR1[soft,tls-error] received, client-instance restarting

Dec  3 11:39:24 fritz daemon.notice openvpn[18329]: MULTI: multi_create_instance called

Dec  3 11:39:24 fritz daemon.notice openvpn[18329]: 2.247.242.142:7180 Re-using SSL/TLS context

Dec  3 11:39:24 fritz daemon.notice openvpn[18329]: 2.247.242.142:7180 Control Channel MTU parms [ L:1541 D:166 EF:66 EB:0 ET:0 EL:0 ]

Dec  3 11:39:24 fritz daemon.notice openvpn[18329]: 2.247.242.142:7180 Data Channel MTU parms [ L:1541 D:1450 EF:41 EB:4 ET:0 EL:0 ]

Dec  3 11:39:24 fritz daemon.notice openvpn[18329]: 2.247.242.142:7180 TLS: Initial packet from [AF_INET]2.247.242.142:7180, sid=1caf1e72 d93154e5

Dec  3 11:40:25 fritz daemon.err openvpn[18329]: 2.247.242.142:7180 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)

Dec  3 11:40:25 fritz daemon.err openvpn[18329]: 2.247.242.142:7180 TLS Error: TLS handshake failed

Dec  3 11:40:25 fritz daemon.notice openvpn[18329]: 2.247.242.142:7180 SIGUSR1[soft,tls-error] received, client-instance restarting

Dec  3 11:40:28 fritz daemon.notice openvpn[18329]: MULTI: multi_create_instance called

Dec  3 11:40:28 fritz daemon.notice openvpn[18329]: 2.247.242.142:14992 Re-using SSL/TLS context

Dec  3 11:40:28 fritz daemon.notice openvpn[18329]: 2.247.242.142:14992 Control Channel MTU parms [ L:1541 D:166 EF:66 EB:0 ET:0 EL:0 ]

Dec  3 11:40:28 fritz daemon.notice openvpn[18329]: 2.247.242.142:14992 Data Channel MTU parms [ L:1541 D:1450 EF:41 EB:4 ET:0 EL:0 ]

Dec  3 11:40:28 fritz daemon.notice openvpn[18329]: 2.247.242.142:14992 TLS: Initial packet from [AF_INET]2.247.242.142:14992, sid=14f78c6f eed8c98f

Dec  3 11:41:28 fritz daemon.err openvpn[18329]: 2.247.242.142:14992 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)

Dec  3 11:41:28 fritz daemon.err openvpn[18329]: 2.247.242.142:14992 TLS Error: TLS handshake failed

Dec  3 11:41:28 fritz daemon.notice openvpn[18329]: 2.247.242.142:14992 SIGUSR1[soft,tls-error] received, client-instance restarting

Dec  3 11:41:31 fritz daemon.notice openvpn[18329]: MULTI: multi_create_instance called

Dec  3 11:41:31 fritz daemon.notice openvpn[18329]: 2.247.242.142:12478 Re-using SSL/TLS context

Dec  3 11:41:31 fritz daemon.notice openvpn[18329]: 2.247.242.142:12478 Control Channel MTU parms [ L:1541 D:166 EF:66 EB:0 ET:0 EL:0 ]

Dec  3 11:41:31 fritz daemon.notice openvpn[18329]: 2.247.242.142:12478 Data Channel MTU parms [ L:1541 D:1450 EF:41 EB:4 ET:0 EL:0 ]

Dec  3 11:41:31 fritz daemon.notice openvpn[18329]: 2.247.242.142:12478 TLS: Initial packet from [AF_INET]2.247.242.142:12478, sid=17a6f618 76138283

Dec  3 11:42:31 fritz daemon.err openvpn[18329]: 2.247.242.142:12478 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)

Dec  3 11:42:31 fritz daemon.err openvpn[18329]: 2.247.242.142:12478 TLS Error: TLS handshake failed

Dec  3 11:42:31 fritz daemon.notice openvpn[18329]: 2.247.242.142:12478 SIGUSR1[soft,tls-error] received, client-instance restarting

Dec  3 11:42:34 fritz daemon.notice openvpn[18329]: MULTI: multi_create_instance called

Dec  3 11:42:34 fritz daemon.notice openvpn[18329]: 2.247.242.142:14974 Re-using SSL/TLS context

Dec  3 11:42:34 fritz daemon.notice openvpn[18329]: 2.247.242.142:14974 Control Channel MTU parms [ L:1541 D:166 EF:66 EB:0 ET:0 EL:0 ]

Dec  3 11:42:34 fritz daemon.notice openvpn[18329]: 2.247.242.142:14974 Data Channel MTU parms [ L:1541 D:1450 EF:41 EB:4 ET:0 EL:0 ]

Dec  3 11:42:34 fritz daemon.notice openvpn[18329]: 2.247.242.142:14974 TLS: Initial packet from [AF_INET]2.247.242.142:14974, sid=fff5df44 78b0c55e

Dec  3 11:43:35 fritz daemon.err openvpn[18329]: 2.247.242.142:14974 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)

Dec  3 11:43:35 fritz daemon.err openvpn[18329]: 2.247.242.142:14974 TLS Error: TLS handshake failed

Dec  3 11:43:35 fritz daemon.notice openvpn[18329]: 2.247.242.142:14974 SIGUSR1[soft,tls-error] received, client-instance restarting

Dec  3 11:43:36 fritz daemon.notice openvpn[18329]: MULTI: multi_create_instance called

Dec  3 11:43:36 fritz daemon.notice openvpn[18329]: 2.247.242.142:22697 Re-using SSL/TLS context

Dec  3 11:43:36 fritz daemon.notice openvpn[18329]: 2.247.242.142:22697 Control Channel MTU parms [ L:1541 D:166 EF:66 EB:0 ET:0 EL:0 ]

Dec  3 11:43:36 fritz daemon.notice openvpn[18329]: 2.247.242.142:22697 Data Channel MTU parms [ L:1541 D:1450 EF:41 EB:4 ET:0 EL:0 ]

Dec  3 11:43:36 fritz daemon.notice openvpn[18329]: 2.247.242.142:22697 TLS: Initial packet from [AF_INET]2.247.242.142:22697, sid=a506701e 06384d96

Dec  3 11:44:36 fritz daemon.err openvpn[18329]: 2.247.242.142:22697 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)

Dec  3 11:44:36 fritz daemon.err openvpn[18329]: 2.247.242.142:22697 TLS Error: TLS handshake failed

Dec  3 11:44:36 fritz daemon.notice openvpn[18329]: 2.247.242.142:22697 SIGUSR1[soft,tls-error] received, client-instance restarting

Dec  3 11:44:40 fritz daemon.notice openvpn[18329]: MULTI: multi_create_instance called

Dec  3 11:44:40 fritz daemon.notice openvpn[18329]: 2.247.242.142:20665 Re-using SSL/TLS context

Dec  3 11:44:40 fritz daemon.notice openvpn[18329]: 2.247.242.142:20665 Control Channel MTU parms [ L:1541 D:166 EF:66 EB:0 ET:0 EL:0 ]

Dec  3 11:44:40 fritz daemon.notice openvpn[18329]: 2.247.242.142:20665 Data Channel MTU parms [ L:1541 D:1450 EF:41 EB:4 ET:0 EL:0 ]

Dec  3 11:44:40 fritz daemon.notice openvpn[18329]: 2.247.242.142:20665 TLS: Initial packet from [AF_INET]2.247.242.142:20665, sid=a55f35ae c62bf8cf

Dec  3 11:45:40 fritz daemon.err openvpn[18329]: 2.247.242.142:20665 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)

Dec  3 11:45:40 fritz daemon.err openvpn[18329]: 2.247.242.142:20665 TLS Error: TLS handshake failed

Dec  3 11:45:40 fritz daemon.notice openvpn[18329]: 2.247.242.142:20665 SIGUSR1[soft,tls-error] received, client-instance restarting

Dec  3 11:45:44 fritz daemon.notice openvpn[18329]: MULTI: multi_create_instance called

Dec  3 11:45:44 fritz daemon.notice openvpn[18329]: 2.247.242.142:20525 Re-using SSL/TLS context

Dec  3 11:45:44 fritz daemon.notice openvpn[18329]: 2.247.242.142:20525 Control Channel MTU parms [ L:1541 D:166 EF:66 EB:0 ET:0 EL:0 ]

Dec  3 11:45:44 fritz daemon.notice openvpn[18329]: 2.247.242.142:20525 Data Channel MTU parms [ L:1541 D:1450 EF:41 EB:4 ET:0 EL:0 ]

Dec  3 11:45:44 fritz daemon.notice openvpn[18329]: 2.247.242.142:20525 TLS: Initial packet from [AF_INET]2.247.242.142:20525, sid=d871cd47 73b54890

Dec  3 11:46:45 fritz daemon.err openvpn[18329]: 2.247.242.142:20525 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)

Dec  3 11:46:45 fritz daemon.err openvpn[18329]: 2.247.242.142:20525 TLS Error: TLS handshake failed

Dec  3 11:46:45 fritz daemon.notice openvpn[18329]: 2.247.242.142:20525 SIGUSR1[soft,tls-error] received, client-instance restarting

Dec  3 11:46:47 fritz daemon.notice openvpn[18329]: MULTI: multi_create_instance called

Dec  3 11:46:47 fritz daemon.notice openvpn[18329]: 2.247.242.142:16974 Re-using SSL/TLS context

Dec  3 11:46:47 fritz daemon.notice openvpn[18329]: 2.247.242.142:16974 Control Channel MTU parms [ L:1541 D:166 EF:66 EB:0 ET:0 EL:0 ]

Dec  3 11:46:47 fritz daemon.notice openvpn[18329]: 2.247.242.142:16974 Data Channel MTU parms [ L:1541 D:1450 EF:41 EB:4 ET:0 EL:0 ]

Dec  3 11:46:47 fritz daemon.notice openvpn[18329]: 2.247.242.142:16974 TLS: Initial packet from [AF_INET]2.247.242.142:16974, sid=212eddd1 8480327c

Es scheint als wolle jemand ständig einen Tunnel aufbauen, ohne berechtigt zu sein. Was haltet Ihr davon? Sollte ich den OpenVPN-Port ggf. ändern oder wie wehre ich sowas ab?

[Frage] Angriff über OpenVPN?

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