All Questions
102
questions with no upvoted or accepted answers
3
votes
0
answers
1k
views
How to connect to a torrent tracker running on a local host?
I want to share huge files via bitTorrent.
I'm using Ubuntu 18.04. I've set up a tracker opentracker listening to port 6969, and a client kTorrent listening to port 6881. My network uses NAT. I ...
- 123
2
votes
1
answer
420
views
Why is my public IPv6 address different from the one listed in linux
Going to [whatismyip.com][1] on different devices inside my home network provides expected results, the same IPv4 address and different IPv6 addresses on each device. However, upon looking at the ...
- 21
2
votes
0
answers
192
views
Mark only the udp traffic above a certain rate using iptables commands
I'm trying to achieve the following scenario:
Using the iptables command, mark UDP traffic with destination port 1234 that passes through a Linux router with the recommended DSCP value for Expedited ...
- 21
2
votes
1
answer
61
views
Switch between LANs - dynamic internal IPs of Linux guest; how to connect with hostname?
I sometimes bring my computer to home to work; and every time I do this, I have to check the IP of my VMware CentOS box's IP because I connect with Putty.
The work LAN use 10.160.xx.xx IP range and ...
- 662
2
votes
0
answers
10k
views
ssh connect to host X.X.X.X port 22: connection refused
I am not able to connet to any remote server. It shows up this error.
I am able to ping the same ip address.
Also I checked sshd is running :
sudo service sshd status
ssh.service - OpenBSD Secure ...
- 21
2
votes
0
answers
96
views
Changing IP address of one network changes another network's IP also
Problem: I have two virtual networks on my VM and changing the IP on one using Network dialog also updates the other IP.
Background:
I set the IP of VMnet1 (host only) to IP 192.168.241.4
I set up ...
- 21
2
votes
0
answers
307
views
How can I add or delete route about multi path one by one?
for example, current default route is
ip route add default nexthop via 10.0.2.1 weight 1 nexthop via 10.0.2.3 weight 1
if the nexthop 10.0.2.1 is unreacheable, how can I only del 10.0.2.1, not del ...
- 21
2
votes
0
answers
3k
views
PPP: Modem hangup on IPCP negotiation
First of all, sorry for the question if it is obvious, I'm not very good at network configuration.
I'm currently trying to connect a Linux machine with Busybox through a modem to a cellular network (...
2
votes
1
answer
194
views
Hopping Gateways in a Multi-gateway Network?
I'm on a network that has multiple gateways, and it seems that my machine connects to a different gateway than what my phone does. I'm curious as to how I may switch to another gateway. I've tried ...
- 153
2
votes
1
answer
355
views
Is there a trickle-like tool to set IP ToS?
I've set up my router to traffic shape using the ToS field, but not all bandwidth-heavy programs set an appropriate value. So I need a way to set the ToS for the traffic of an arbitrary program.
Is ...
- 353
1
vote
0
answers
43
views
strange routing table entries
My Linux network device cannot be access outside my local network.
I checked the routing table, and found the following:
netstat -rn
Kernel IP routing table
Destination Gateway Genmask ...
- 11
1
vote
0
answers
57
views
SSDP Discovery not working for IP address other than WSL's instance IP
I am trying to port a process from Windows to WSL/Linux. Earlier, two Windows process were communicating through TCP connection after successful SSDP discovery. Now, I want similar communication to ...
1
vote
0
answers
212
views
SSH connection between Ubuntu Server VM
I'm trying to make SSH connection from my Windows 10 host to the Ubuntu Server VM.
At the beginning I built the VM from scratch on VMware and chose the Bridged Adapter configuration. It gave me IP of ...
- 11
1
vote
0
answers
181
views
RTNETLINK answers: Invalid argument when trying to use avahi-autoipd on Petalinux device
I have an embedded device running PetaLinux that I wish to configure to use avahi-autoipd to use LLA on an interface.
I have been trying to do this from the CLI to ensure it works as expected, and I ...
- 141
1
vote
0
answers
147
views
linux: how to troubleshoot when set multiple subnet (public IP) to single network interface?
==== Question edited after the problem "solved", but the question remains clueless to me ====
Hosting provider's support staff solved the problem without giving explanation.
linux: how to ...
- 236
1
vote
1
answer
1k
views
IP Address delete - RTNETLINK answers: Cannot assign requested address
I am trying to install a distribution of Kubernetes with OVS. During the installation, the script tries to execute ip addr del 65.109.33.184/32 dev enp41s0, The command fails with Error RTNETLINK ...
- 11
1
vote
2
answers
15k
views
Setting down and up a working interface with ip command causes it to stop working
I'm running Debian 11 and using the CLI, when bringing down and up a working interface with ip command (doing no changes at all on it's parameters) it stops working.
Steps that I follow:
Boot the ...
1
vote
1
answer
2k
views
"ip neigh flush" command removes entries with "extern_learn" and "permanent" set
If arp/neighbor entries are programmed with both "extern_learn" and "permanent", "ip neigh flush" command throws "Invalid argument" error, but the entries are ...
- 11
1
vote
0
answers
313
views
ufw logs BLOCKS from 2 sites while BLOCK logging is completely disabled for ALL sites
Logging is enabled. Only allow rules are logged. The very last line of my firewall rules is:
Anywhere DENY Anywhere
No logging is asked for, however two IPs repeatedly show ...
1
vote
1
answer
425
views
Why can i connect from different subnet? Windows 10 PC connected to Ubuntu PC
Ok, so i connected a linux laptop to windows 10 laptop with ethernet cable.
Windows machine
I specified manual IP settings for windows laptop ethernet adapter to be:
IP address 192.168.255.126
Subnet ...
- 11
1
vote
1
answer
532
views
Workaround for two devices with the same IP address on an airgapped network which is using an unmanaged switch where DHCP isn’t an option
So I have two IP cameras and a PC running Fedora 30 on a local network connected together using an unmanaged switch.
The two IP cameras have the same IP address by default and for reasons I won’t go ...
1
vote
0
answers
551
views
Container port/service accessible from all host IP's with docker custom bridge linked to IPv4 alias on Synology NAS
Good day all.
I Have a question regarding Docker on a Synology NAS (Linux).
I have a Ubiquity Unifi Controller container running on this NAS. (jacobalberti/unifi) This image needs specific ports to ...
1
vote
3
answers
2k
views
Forwarding Traffic To Particular IP using IPTABLES
I am dealing with 3 machines (VMs) :-
A :-172.20.10.1 (Client)
B :-172.20.10.2 (Original Server)
C:-172.20.10.5 (Redirect Server)
Now I want A to visit B and B to forward that to C.
I was able ...
- 11
1
vote
0
answers
966
views
Route all traffic from VPS to my home network
I have a VPS with a static public IP, and I also have a home network with a static public IP.
I want to somehow make it so that if the VPS's static IP receives traffic on a certain port, it routes/...
- 353
1
vote
1
answer
359
views
ping communication between interfaces in linux
Part 1 - Is it possible to ping between ip on port0 to ip on port1 of same NIC adapter ? The ICMP should traverse on the wire connected between ports. i.e
On HOST A with two-port-adapter
port-0-...
- 111
1
vote
0
answers
80
views
convert Ethernet router into integration gateway
I need to integrate to an Ethernet proprietary network. It is IP based but doesn't implement TCP.
I need a router which will poll devices on this network, and periodically post the data using ...
- 1,691
1
vote
0
answers
138
views
point multiple ip address to hosting
I have centos server, earlier it had 1 ip [ a.b.c.d ] (external ip , eg., 141.101.114.59).
Now, I bought 2 additional ip [b.c.d.e , f.g.h.i] (external ip , e.g, 190.93.244.58 , 130.93.245.8 ). I have ...
- 11
1
vote
0
answers
359
views
Linux IP aliasing with single DHCP and single STATIC IP address
I'm working on an embedded system with a single physical ethernet device. Using aliasing, I'd like the device configured such that one static IP address (call it s.s.s.s) is ALWAYS available. The ...
- 11
1
vote
2
answers
1k
views
How does wlan interface receive 802.11 management frames?
From what I have read, hostapd (its used for creating a wifi access-point) creates a mon0.wlan0 interface to send and receive wifi management frames (http://lists.shmoo.com/pipermail/hostap/2012-May/...
- 33
1
vote
0
answers
1k
views
Ethernet port on Linux machine not recognizing ethernet connection with embedded device
I have an atmel at91sam7x256 microcontroller that I would like to use for a TCP/IP communication. The very first step of my project is to be able to "ping" my board given its IP address. I have its IP ...
- 155