All Questions
Tagged with networking iptables
960
questions
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SSH into Virtual machine issues
I recently set up an Ubuntu server inside a virtual machine and I have been trying to SSH into this VM from the host (using Oracle VirtualBox). I keep receiving a timeout error no matter what I try.
I ...
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votes
1
answer
18
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fail2ban iptables rule has no effect for SoftEther VPN ... unless sshd rule is place
I am completely perplexed as to why this doesn't work.
This is my bare iptables ruleset:
# iptables -L -n
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain ...
- 589
1
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1
answer
32
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How to set up routing and firewall to achieve the desired result in this specific scenario (selective routing through wg tunnel)?
I have 2 linux computers connected via wireguard over the internet.
Their wg configuration is as follows.
Computer1:
[Interface]
PrivateKey = <computer1-private-key>
Address = 10.6.0.2/24
...
- 13
1
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31
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Wireguard client loses connection in different network
I'm trying to figure out how to fix my remote access issue between the wireguard server and the client pcs.
I configured an Ubuntu PC as a Wireguard server. And another Ubuntu PC configured as a ...
- 11
0
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1
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36
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IPTables Nat Confusion
I'm trying to make a NAT using IP Tables with the following configuration. OrangePI1 has two interfaces LAN and WAN.
LAN is a static address network where OrangePi2 lives and has a static ip.
On the ...
1
vote
1
answer
187
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Cannot reach web server in vm from bare metal using DNS after iptables rules forward packets to virtual bridge
This is a simplified description of the development environment at work and I am trying to configure it to facilitate developers using it.
Topology:
The topology of my setup is illustrated below. ...
- 11
0
votes
1
answer
72
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Linux Docker compose container cannot ping another bridged Docker container
Overview
I need a Docker Compose zabbix host to ping a host on a containerlab docker network.
These two Docker networks run under a linux Docker host machine as below... This information comes from ...
- 1
1
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37
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Linux - Preserve client IP Addresses when connecting to game server over wireguard VPN tunnel from VPS
My question is almost perfectly summarised here:
Preserve connecting clients IP address through an OpenVPN tunnel
And the solution provided in that post hints at what I need to do, and have been ...
- 11
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33
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How do i use IPTables to forward a port to a different local ip when using DMZ
My router software is garbage, it only allows forwarding certain ports, luckly i found out that DMZ works, i have a linux server, can i point DMZ to that linux server and just use it to forward ports ...
- 1
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42
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Round-robin between two VPNs with route tables and iptables
I opened to vpn interfaces with
openvpn --config vpn1.ovpn
openvpn --config vpn2.ovpn
and I want to send all from my laptop by one of the vpns.
I prevented the vpns from changing my default gateway ...
- 101
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34
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How to keep original IP of user after forwarding port 443 through iptables?
I have two servers for example with such IPs:
1serv - ip: 99.99.99.99
2serv - ip: 111.111.111.111
I need all traffic on 99.99.99.99 -> 111.111.111.111
I write:
sysctl net.ipv4.ip_forward=1
...
0
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0
answers
115
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Linux netfilter: How to capture, modify and retransmit packets that my host is sending to a specific destination?
I am trying to write a linux service that captures the packets that go from my personal server to a specific destination and performs necessary changes to them. More specifically, i want to find all ...
0
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52
views
Wireguard Proxy : port 443 forwarded but not port 80
Summary : Port 80 and 443 traffic arrives to my VPS but only port 443 traffic is forwarded by Wireguard to my homelab.
I recently invested in a cheap VPS. The main objective was to use it as a proxy ...
- 1
0
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0
answers
32
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Docker container not recieving packets from specific port
So I have an instance in Oracle cloud, running OL7. In that instance I'm trying to setup some docker containers with multiple servers. These container should be reachable from the outside on different ...
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52
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How to prevent iptables NAT caused network jitter?
Background is as follows:
Currently, we have an OpenVPN tunnel that connecting from Point A to Point B (Point B has a public IP address), but if the internet route is suboptimal, the latency is quite ...
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