0
votes
0answers
7 views

VBoxManage natnetwork portforwaring not working as expected

I'm running a headless guest 12.04 Ubuntu from a headless 16.04 Ubuntu host, using VBoxManage. The guest VM is configured with a natnetwork.VBoxManage modifyvm "Ubuntu 12.04 Server" --nic1 ...
0
votes
1answer
38 views

I cannot visit one specific website on desktop, but on my phone it works. How do I fix this?

When visiting the website em.com.br (sfw) I get an error: "DNS_PROBE_FINISHED_NXDOMAIN"On my phone (which is using the same wifi) everything works.OS: Ubuntu 17.10Browser: FF 59.0.2, Chromium ...
2
votes
1answer
16 views

vmware workstation Ubuntu 16.04 Guest to Windows 10 Host not pingable

As the title says I tried to connect my vm with Ubuntu 16.04 on it to my windows 10 machine in the first place but after hours of trying I don't know what is wrong. My ultimate goal is to connect from ...
2
votes
0answers
54 views

Destination Host Unreachable between linux boxes

I have a home wifi network with 2 linux and 1 mac system. I can reach each linux from mac and other way round, but an attempt to ping a linux from another linux results with "Destination Host ...
0
votes
0answers
9 views

All connections time out, after recreating instance. (Google Cloud)

All connections to instance time out to my Google Cloud Compute Engine instance. All worked well before I recreated the instance with the image from the last instance. IPs changed because I changed ...
0
votes
0answers
29 views

Internet connection not working on guest system (VirtualBox, Guest: Ubuntu, Host: Windows)

I have the VirtualBox 5.1.22 installed and I'm running Ubuntu 16.04 on it. My host system is Windows 7. When I installed everything, the VirtualBox/Ubuntu seem to have configured the network ...
0
votes
0answers
31 views

Spoofed packet not forwarded through ubuntu

My network structure is as follows:Network structure      Win XP       <--------->       &...
1
vote
1answer
33 views

Configure tunnel adapter for VPN client on Ubuntu 16.04 Desktop?

I'm trying to configure a network set up for a custom VPN CLIENT library. What I can't figure outI need to be able to forward the traffic in a normal VPN set up so that my C++ script can read/...
0
votes
0answers
57 views

detecting packets at a certain port

This the python script for my proxy web server: #!/usr/bin/python3from socket import *sockobj=socket(AF_INET, SOCK_STREAM)sockobj.bind(('', 5000))sockobj.listen(10)while True:...
0
votes
1answer
66 views

VirtualBox suddenly lost all network interfaces

I have Windows 10 host and Ubuntu 16.04 guest on my virtualBox I am using NAT as network configuration. Everything was working fine until I suddenly lost my netwrok interface and network connection. ...
1
vote
0answers
27 views

remove internet access for a single tool or process

I need to ban a local running tool or a process (or PID) from the internet into the "localhost"-world only, because it should not talk to the internet but should be available/accessible on localhost....
1
vote
1answer
35 views

VirtualBox bridged interfaces do not work with bridged networking

I'm trying to use a virtual machine to bridge connections between the VirtualBox internal network and my host's network.The purpose of this is to be able to firewall connections without having to ...
0
votes
1answer
32 views

Methods of blocking websites on linux (except /etc/hosts)

Long time ago I blocked list of webpages using different methods. Now I would like to whitelist one of these adresses, unfortunatelly I don't rember how I blocked it. I have deleted one line from /etc/...
2
votes
1answer
42 views

Why is dnsmasq forwarding already resolved addresses?

I can ping the host:dig registry.mynetAnd the DNS server does what is expected:dnsmasq[1]: 895 127.0.0.1/44580 query[A] registry.mynet from 127.0.0.1dnsmasq[1]: 895 127.0.0.1/44580 /etc/hosts ...
1
vote
1answer
50 views

I can ping a server, but I can not ssh to it

I can ping my server:» ping -c 1 42.24.53.224PING 42.24.53.224 (42.24.53.224) 56(84) bytes of data.64 bytes from 42.24.53.224: icmp_seq=1 ttl=62 time=1.10 ms--- 42.24.53.224 ping statistics ---...

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