All Questions
17
questions with no upvoted or accepted answers
2
votes
0
answers
344
views
Can't access Apache2 on a VPS via public IP of the server from an external computer
root@Client13:/etc/apache2# netstat -anltp | grep "LISTEN "
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 104129/apache2
tcp 0 0 0.0.0.0:22 ...
- 33
1
vote
0
answers
114
views
How can I use iptables to forward all traffic through an interface based in gid?
I'm on Debian 12 bookworm
I'm trying to forward all traffic from (and to) users in the group watchers through interface tun9 and prevent them from using enp2s0.
I've set up a tunnel using openvpn with ...
- 201
1
vote
2
answers
322
views
WireGuard Throughput Issues
I'm having quite an odd issue with WireGuard performance between a VyOS router [LTS 1.3.3] and a Cloud VPS [Debian 12] acting as a CHR.
I have a publicly facing /29 routed to the CHR via GRE, at an ...
- 11
1
vote
0
answers
3k
views
How to stop the sending of ICMP timestamps replies and requests?
Woo, progress! Updated below! I've been all over the internet looking for an answer to this one. I am using a Raspberry Pi running Raspbian Debian 11. The problem seems rather simple, just blocking ...
- 11
0
votes
0
answers
52
views
ping to 8.8.8.8 took long time or even want to show result
Im using ip tables to simulate between host and and client. I can ping between host and client or client between client but the client cannot ping to the 8.8.8.8 or even using internet, but the host ...
0
votes
1
answer
940
views
Correct flag to use instead of --icmp-type?
I am trying to set up iptables v1.8.7 on a Debian 11 Raspberry Pi to block ICMP timestamp requests and replies. The tutorial I am following and all the other forums I have looked at say to use the ...
- 11
0
votes
0
answers
28
views
Cant ping neither the gateway nor the internet if not already pinged with the gateway
Im quite new to networking, i tried to look for the response to my problem but i didnt find it.
I have 4 vm's, that we will call 1,2,3,4. The first ( the gateway) one have a host-only and bridge ...
- 1
0
votes
0
answers
598
views
NAT with iptables does not work from within a VM
I use Proxmox on a Debian 11 host with two public IP addresses.
One ip gets bridged to a virtual machine (VM1) via vmbr0.
For another machine (VM2, IP 192.168.10.2) I want to use NAT to get internet ...
- 1
0
votes
1
answer
3k
views
iptables prerouting don't work
I used this command block for routing 80 to 8080, but it's not working now
sudo sysctl -w net.ipv4.ip_forward=1
sudo iptables -t nat -A PREROUTING -i wlp8s0 -p tcp --dport 80 -j REDIRECT --to-port ...
- 1
0
votes
1
answer
622
views
Debian 8 iptables blocked all connections
I've got a really big problem with my root server running Debian 8 (64-Bit). I installed some iptables rules to block specific IP ranges belonging to China and some blacklisted ranges. It seems ...
- 1
0
votes
0
answers
67
views
Debian Network Configuration
I have a Debian VPS on which I am trying to open some ports like 80, 443, etc. and here's what I've done:
Creating a test iptables file:
editor /etc/iptables.test.rules
which has some basic rules:
...
- 19
0
votes
1
answer
432
views
Allow outgoing connection only on specific VPN
I would like to configure my Debian 8 server so it is not able to make outgoing connections at all except for a specific OpenVPN host (which distributes IP addresses based on an IP pool).
My attempt ...
- 121
0
votes
2
answers
883
views
Flushed my routing table and internet no longer works, how to repair
I was trying things with the routing table, wanted to delete a rule I just added and thought it was easy like with iptables and flushed the table.
Now I no longer have a connection. When I ping ...
- 1,005
0
votes
1
answer
865
views
Iptables rules suddenly not working
I'm trying to set up a webserver using an Odroid U3; as OS I have Debian 7.4. The issue came when trying to load the iptables rules with iptables-persistent. I'm using the same file with rules I've ...
- 1
0
votes
1
answer
1k
views
Port Forwarding with the real IP-address
How to implement port forwarding, so that would be displayed on the host real IP and non-IP machine, as it comes with SNAT DNET with IPTABLES
The scheme is about the
The machine-HETE with IP 1.2.3....
- 9