Linux

48328 readers

626 users here now

From Wikipedia, the free encyclopedia

Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

Rules

Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.
No misinformation
No NSFW content
No hate speech, bigotry, etc

Related Communities

Community icon by Alpár-Etele Méder, licensed under CC BY 3.0

founded 5 years ago

MODERATORS

AgreeableLandscape@lemmy.ml

nooter692@lemmy.ml

MarcellusDrum@lemmy.ml

cypherpunks@lemmy.ml

cyclohexane@lemmy.ml

d3Xt3r@lemmy.nz

[Solved] Can't connect to host after enabling WireGuard tunnel (lemmy.world)

submitted 3 months ago* (last edited 3 months ago) by user_naa@lemmy.world to c/linux@lemmy.ml

19 comments fedilink hide all child comments

I installed WireGuard on my host and set this configuration /etc/wireguard/wg0.conf:

[Interface]
Address = 10.0.0.1/24
ListenPort = 51820
PrivateKey = [REDACTED]
PostUp = iptables -A FORWARD -i %i -j ACCEPT; iptables -t nat -A POSTROUTING -o ens3 -j MASQUERADE
PostDown = iptables -D FORWARD -i %i -j ACCEPT; iptables -t nat -D POSTROUTING -o ens3 -j MASQUERADE


[Peer]
PublicKey = [REDACTED]
PresharedKey = [REDACTED]
AllowedIPs = 10.0.0.2/32

[Peer]
PublicKey = [REDACTED]
PresharedKey = [REDACTED]
AllowedIPs = 10.0.0.3/32

[Peer]
PublicKey = [REDACTED]
PresharedKey = [REDACTED]
AllowedIPs = 10.0.0.4/32

[Peer]
PublicKey = [REDACTED]
PresharedKey = [REDACTED]
AllowedIPs = 10.0.0.5/32

[Peer]
PublicKey = [REDACTED]
PresharedKey = [REDACTED]
AllowedIPs = 10.0.0.6/32

[Peer]
PublicKey = [REDACTED]
PresharedKey = [REDACTED]
AllowedIPs = 10.0.0.7/32

[Peer]
PublicKey = [REDACTED]
PresharedKey = [REDACTED]
AllowedIPs = 10.0.0.8/32

[Peer]
PublicKey = [REDACTED]
PresharedKey = [REDACTED]
AllowedIPs = 10.0.0.9/32

[Peer]
PublicKey = [REDACTED]
PresharedKey = [REDACTED]
AllowedIPs = 10.0.0.10/32

[Peer]
PublicKey = [REDACTED]
PresharedKey = [REDACTED]
AllowedIPs = 10.0.0.11/32

Nmap scan when wg0 is down:

Starting Nmap 7.93 ( https://nmap.org ) at 2024-08-16 03:26 CDT
Host is up (0.050s latency).
Not shown: 998 closed tcp ports (conn-refused)
PORT    STATE    SERVICE
22/tcp  open     ssh
179/tcp filtered bgp

Nmap done: 1 IP address (1 host up) scanned in 1.93 seconds

Nmap scan when wg0 is up:

Starting Nmap 7.93 ( https://nmap.org ) at 2024-08-16 03:27 CDT
All 1000 scanned ports are in ignored states.
Not shown: 1000 filtered tcp ports (no-response)

Nmap done: 1 IP address (1 host up) scanned in 201.43 seconds

I also cannot connect to host via ssh. How to fix this issue?

Upd. Fixed my changing server WireGuard IP to 10.0.1.1. 10.0.0.1 was already taken

you are viewing a single comment's thread
view the rest of the comments

[–] user_naa@lemmy.world 2 points 3 months ago (1 children)

I didn't connect any client yet.

[–] atzanteol@sh.itjust.works 1 points 3 months ago

Ah - I see.

I can never remember how all the iptables stuff works but here is what I have in my configuration which is basically attempting the same thing:

PostUp   = iptables -A FORWARD -i wg0 -j ACCEPT; iptables -A FORWARD -o wg0 -j ACCEPT; iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE; iptables -t nat -A POSTROUTING -o wg0 -j MASQUERADE
PostDown = iptables -D FORWARD -i wg0 -j ACCEPT; iptables -D FORWARD -o wg0 -j ACCEPT; iptables -t nat -D POSTROUTING -o eth0 -j MASQUERADE; iptables -t nat -D POSTROUTING -o wg0 -j MASQUERADE

Mine's a little different and works for me.