Comments (7)
wangyu-
commented on August 18, 2024
是不是 udp2raw 默认生成的 iptables 规则不适用这种场景？
udp2raw生成的规则仅仅供udp2raw自己使用，udp2raw不生成任何供vpn用的iptables规则。
既然你ping 10.7.0.1已经通了，那说明你的vpn已经正常连通了。如果需要通过这条VPN上网，你需要自己添加iptables规则。可能还要改路由表，还要开启ip forward，具体内容要自己google一下。
（之前你用的L2TP没问题，是因为L2TP默认帮你把规则添加好了）
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sdysj
commented on August 18, 2024
shadowvpn + UDPSpeeder 默认 shadowvpn 规则就正常上网，套上 udp2raw 就不行了。现在不清楚是需要添加例外的规则还是程序问题，你能测试一下吗？
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wangyu-
commented on August 18, 2024
你试一下在两边加上--lower-level auto
另外，你贴一下两边的iptables-save结果。
==update==
还有贴一下，route或ip route的结果
不清楚是需要添加例外的规则还是程序问题
都ping通了，基本可以确认不是程序问题。
openvpn/l2tp +udpspeeder+udp2raw经测试都是可以的。
另外shadowvpn+udp2raw，也有人反馈是可以的（ https://www.v2ex.com/t/382261 ）
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sdysj
commented on August 18, 2024
root@orangepipc:~# iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
udp2rawDwrW_c3fb6161_C0 tcp -- SERVERIP anywhere tcp spt:36480
Chain FORWARD (policy ACCEPT)
target prot opt source destination
ShadowVPN all -- anywhere anywhere
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
Chain ShadowVPN (1 references)
target prot opt source destination
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED
Chain udp2rawDwrW_c3fb6161_C0 (1 references)
target prot opt source destination
DROP all -- anywhere anywhere
root@orangepipc:~# iptables -t nat -L
Chain PREROUTING (policy ACCEPT)
target prot opt source destination
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
Chain POSTROUTING (policy ACCEPT)
target prot opt source destination
ShadowVPN all -- anywhere anywhere
Chain ShadowVPN (1 references)
target prot opt source destination
MASQUERADE all -- anywhere anywhere
root@orangepipc:~# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 0.0.0.0 128.0.0.0 U 0 0 0 tun0
0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0
10.7.0.0 0.0.0.0 255.255.255.0 U 0 0 0 tun0
SERVERIP 192.168.1.1 255.255.255.255 UGH 0 0 0 eth0
128.0.0.0 0.0.0.0 128.0.0.0 U 0 0 0 tun0
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
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sdysj
commented on August 18, 2024
加上 --lower-level auto 也不行。
shadowvpn+udp2raw 可以。
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wangyu-
commented on August 18, 2024
你贴的只有一边的，把client和server两边都贴一下。
iptables -L格式我不熟悉，请你贴一下iptables-save的输出
route也贴一下两边的。
另外再贴一下ifconfig的两边输出。
两边的udp2raw和udpspeeder的命令和日志也贴一下。
==update==
shadowvpn + UDPSpeeder 默认 shadowvpn 规则就正常上网，套上 udp2raw 就不行了。
shadowvpn+udp2raw 可以。
所以shadowvpn + UDPSpeeder 和shadowvpn+udp2raw都可以，只有2个都套上以后才不可以是吗？
可能是MTU问题，尝试在shadowvpn的client和server端把mtu都改成1200.
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sdysj
commented on August 18, 2024
确实是 MTU 问题，设置为 1200 就好了。
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