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This topic created in 1737 days ago, the information mentioned may be changed or developed.

RT，

见之前讨论的帖子。v2ex.com/t/800905

现在遇到新的情况，因为在光猫上无法用 wg-quick，有很多命令光猫上没有，所以看了下 wg-quick 脚本，用原始命令直接敲

load hisi tun.ko

insmod  /lib/modules/4.4.197/kernel/drivers/net/tun.ko

create wg0 interface

LOG_LEVEL=debug wireguard-go  wg0

configuration


#set ip
ip -4 address add 10.0.1.88 dev wg0

#up wg0
ip link set mtu 1280 up dev wg0

#add route, ONLY ALLOW .1 through wg, just for test.
ip -4 route add 10.0.1.1 dev wg0

#set conf
wg setconf wg0 wg0.conf

result

[root@x6 /mnt/jffs2/hw] # route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 0.0.0.0 0.0.0.0 U 10 0 0 ppp257
10.0.1.1 0.0.0.0 255.255.255.255 UH 0 0 0 wg0

#ping test on x6
[root@x6 /mnt/jffs2/hw] # ping 10.0.1.1
PING 10.0.1.1 (10.0.1.1): 56 data bytes
64 bytes from 10.0.1.1: seq=0 ttl=64 time=19.197 ms
64 bytes from 10.0.1.1: seq=1 ttl=64 time=20.565 ms

#ping on pc
C:\Users\xxx>ping 10.0.1.1

Pinging 10.0.1.1 with 32 bytes of data:

Supplement 1 · Sep 11, 2021

not use 系统自带的busybox, all binary is compiled statically

/sbin/insmod /lib/modules/4.4.197/kernel/drivers/net/tun.ko
/mnt/jffs2/plug/app/bin/wireguard-go wg0  > /dev/null 2>&1 &
sleep 3
#/mnt/jffs2/plug/app/busybox/sbin/ip link set mtu 1420 up dev wg0
/mnt/jffs2/plug/app/busybox/sbin/ip -4 address add 10.0.1.88 dev wg0
/mnt/jffs2/plug/app/busybox/sbin/ip link set mtu 1420 up dev wg0
/mnt/jffs2/plug/app/busybox/sbin/ip -4 route add 10.0.1.1/32 dev wg0
/mnt/jffs2/plug/app/bin/wg setconf wg0 /mnt/jffs2/hw/wg0.conf

Supplement 2 · Sep 11, 2021

查了下 iptables 网络层和链路层 forward链，出站，貌似没有路有决策？ dXBsb2FkLndpa2ltZWRpYS5vcmcvd2lraXBlZGlhL2NvbW1vbnMvMy8zNy9OZXRmaWx0ZXItcGFja2V0LWZsb3cuc3Zn

Supplement 3 · Sep 11, 2021

花了一个下午的时间，各种排查，终于解决了。

#查看 ppp 的iptables策略，发现有下面一行，虽然没看懂，

[root@x6 /mnt/jffs2/hw] # iptables-save  | grep ppp
-A POST_WANNAT -o ppp257 -j CONENA

#给wg0 加一条同样的策略

iptables -t nat -I POST_WANNAT -o wg0 -j CONENAT

走了好多弯路，在 input output postrouting prerouing 打转。

^C
C:\Users\xxx>ping 10.0.1.1 -t

Pinging 10.0.1.1 with 32 bytes of data:
Reply from 10.0.1.1: bytes=32 time=19ms TTL=63
Reply from 10.0.1.1: bytes=32 time=19ms TTL=63

Ping statistics for 10.0.1.1:
    Packets: Sent = 2, Received = 2, Lost = 0 (0% l
Approximate round trip times in milli-seconds:
    Minimum = 19ms, Maximum = 19ms, Average = 19ms

Supplement 4 · Sep 11, 2021

查了下 CONENAT , 叫端口锥形 nat

hw 光猫，应该不支持 MASQUERADE

用

```
iptables -t nat -I POSTROUTING -o wg0 -j MASQUERADE
```
没效果。
坑真深啊

Supplement 5 · Sep 12, 2021

虚拟内存占用有点高, go 语言不适合 arm

 PPID USER     STAT   VSZ %VSZ CPU %CPU COMMAND
    2 0        SW       0  0.0   0  0.2 [kworker/0:3]
  4696 0        R     0.2   1  0.0 top
     1 srv_bbsp S    5.0   1  0.0 bbsp
    1 cfg_oam  S    2.8   1  0.0 oam
     2 0        SW       0  0.0   0  0.0 [eth_manager]
     2 0        SW       0  0.0   0  0.0 [pcie_thread]
     1 0        S     778m158.1   0  0.0 /mnt/jffs2/plug/app/bin/wireguard-go wg0

Supplement 6 · Sep 13, 2021

对比下 op 上的策略，只需要加2条策略

iptables -I A FORWARD -o wg0 -j ACCEPT
iptables -t nat -A POSTROUTING -o wg0 -j MASQUERADE

Supplement 7 · Sep 13, 2021

全配置，MASQUERADE 策略不能用 I 插入到最前面，要用 A 追加，此是一坑。 wg.sh 代理所有流量配置如下：

# wireguard-go usermode
/sbin/insmod /lib/modules/4.4.197/kernel/drivers/net/tun.ko
sleep 2
/mnt/jffs2/plug/app/bin/wireguard-go wg0 2>/dev/null  &
sleep 3
/mnt/jffs2/plug/app/busybox/sbin/ip link set mtu 1420 up dev wg0
sleep 1
/mnt/jffs2/plug/app/busybox/sbin/ip -4 address add 10.0.1.88 dev wg0
sleep 1
/mnt/jffs2/plug/app/busybox/sbin/ip -4 route add 10.0.1.1/32 dev wg0
/mnt/jffs2/plug/app/busybox/sbin/ip -4 route add 0.0.0.0/0 dev wg0
sleep 1
/mnt/jffs2/plug/app/bin/wg setconf wg0 /mnt/jffs2/hw/wg0.conf
iptables -t nat -A POST_WANNAT -o wg0 -j CONENAT
iptables -t nat -A POSTROUTING -o ppp257 -j MASQUERADE
iptables -t nat -A POSTROUTING -o wg0 -j MASQUERADE

wg0.conf

[Interface]
PrivateKey = ***
[Peer]
PublicKey = ***
Endpoint = ***:port
PersistentKeepalive = 25
AllowedIPs = 10.0.1.1/32
AllowedIPs = 0.0.0.0/0

5 replies • 2021-09-11 20:12:23 +08:00

Qetesh

Sep 11, 2021 via iPhone

pc 的网段对方没写策略吧？或者加 nat

guanyin9cn

Sep 11, 2021

@Qetesh 试了下，没成功。我也感觉是 iptables 问题。

Qetesh

Sep 11, 2021 via iPhone

traceroute 、tcpdump 抓包排查吧

guanyin9cn

Sep 11, 2021

@Qetesh 已解决

Kinnice

Sep 11, 2021 via Android

这个可以和 tr069 联动了

wireguard-go armv7, 在 hw 光猫上可以 ping wireguard 网关， pc 上不行。

load hisi tun.ko

create wg0 interface

configuration

result