Date: Thu, 25 Sep 2014 22:47:13 +0800 From: Zhi-Qiang Lei <zhiqiang.lei@gmail.com> To: lokadamus@gmx.de Cc: freebsd-questions@freebsd.org Subject: Re: VPN client cannot receive packets Message-ID: <2330161C-FA96-4843-AEDA-376344483D61@gmail.com> In-Reply-To: <542424A2.6080408@gmx.de> References: <6AF0AAAB-E7F2-4FA7-81E5-223DA924DDE1@gmail.com> <542424A2.6080408@gmx.de>
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Hi, It is my router/firewall with internet connection. This time I try to list the packets from 8.8.8.8, but there are none. root@freebsd-7638:~ # tcpdump src 8.8.8.8 tcpdump: verbose output suppressed, use -v or -vv for full protocol = decode listening on vtnet0, link-type EN10MB (Ethernet), capture size 65535 = bytes Now the question URL is changed. = http://serverfault.com/questions/631260/freebsd-l2tp-vpn-connection-error Best regards, Zhi-Qiang Lei zhiqiang.lei@gmail.com On Sep 25, 2014, at 10:20 PM, lokadamus@gmx.de wrote: > On 25.09.2014 08:48, Zhi-Qiang Lei wrote: >=20 >> I setup a L2TP/IPsec VPN as this article: >>=20 >> http://wiki.stocksy.co.uk/wiki/L2TP_VPN_in_FreeBSD >>=20 >> My problem is that the connected clients cannot receive packets, = however, sending is okay. >>=20 >> Here are the tcpdump results if I tried to ping 8.8.8.8: >>=20 >> root@freebsd-7638:~ # tcpdump -i vtnet0 icmp >> tcpdump: verbose output suppressed, use -v or -vv for full protocol = decode >> listening on vtnet0, link-type EN10MB (Ethernet), capture size 65535 = bytes >> 05:55:17.630770 IP 192.168.99.150 > google-public-dns-a.google.com: = ICMP echo request, id 36697, seq 0, length 64 >> 05:55:18.627825 IP 192.168.99.150 > google-public-dns-a.google.com: = ICMP echo request, id 36697, seq 1, length 64 >> 05:55:19.624058 IP 192.168.99.150 > google-public-dns-a.google.com: = ICMP echo request, id 36697, seq 2, length 64 >> 05:55:20.618946 IP 192.168.99.150 > google-public-dns-a.google.com: = ICMP echo request, id 36697, seq 3, length 64 >> 05:55:21.622551 IP 192.168.99.150 > google-public-dns-a.google.com: = ICMP echo request, id 36697, seq 4, length 64 >>=20 >> What could be wrong? And how can I troubleshoot? You may reply on = SuperUser if you want, thanks in advance. >>=20 >> http://superuser.com/questions/816485/cannot-receive-packets >>=20 >> Best regards, >> Zhi-Qiang Lei >> zhiqiang.lei@gmail.com >>=20 >> _______________________________________________ >> freebsd-questions@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-questions >> To unsubscribe, send any mail to = "freebsd-questions-unsubscribe@freebsd.org" >>=20 > Hi, >=20 > Is this your router/ firewall with internet connection? > Look with tcpdump for traffic at 8.8.8.8. > So you can see, if traffic comes back or is missing before your vpn = system. >=20 >=20 > Best regards >=20
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