Managing and using network connectivity on a unix system
4
votes
0answers
471 views
Unable to reconnect to a WiFi network on Fedora 20?
Problem
After leaving my Fedora 20 laptop running overnight, I open it back up and it prompts me to re-enter the password for my home WiFi network. The password is already typed in and censored, but ...
3
votes
0answers
47 views
Trying to understand Auto reconnect WIFI method
Iv'e found this method of reconnecting the WIFI dongle from this post , but want to be clear on how it works, before I try and implement it.
1) Go to /etc/ifplugd/action.d/ and rename the ifupdown ...
3
votes
0answers
68 views
Ubuntu eth0 not detected
After installing a new version of this distro, eth0 is not detected automatically.
command inxi -SNxz result:
Network: Card-1: Broadcom NetXtreme BCM57786 Gigabit Ethernet PCIe bus-ID: 01:00.0
...
3
votes
0answers
69 views
Linux - Only first virtual interface can ping external gateway
I created 3 virtual interfaces with different MAC addresses all linked to the same physical interface. I see that they can successfully arp for the gateway (gw) and they can ping (the request is ...
3
votes
0answers
66 views
AIX NIM Master replicate / sync fails to an Alternate Master
I am getting a error when I try to replicate / sync my NIM database and resources to an Alternate NIM Master newly created in my environment:
error replicating resources: unable to ...
3
votes
0answers
114 views
Creating a private network for internal VMs
I am trying to configure a private network for use with my Xen VMs, in addition to the public network in use by another of the VMs (VM1, which has its own public IP).
So far, I have the public side ...
3
votes
0answers
211 views
What do I need to add a virtual IPsec adapter?
I'm trying to set up an IPsec connection manually from the console with iproute2.
What I need is a virtual interface (at best, a virtual IP address could also be sufficient) that IPsec-transforms ...
3
votes
0answers
29 views
Queuing disciplines are per-interface, what happen with interfaces using same device?
I have read about queuing disciplines here http://lartc.org/.
I understand that for instance band 0 of pfifo policy is prioritized over band 2 within same qdisc, but what happen when i have ppp0 and ...
3
votes
0answers
817 views
I opened a port with iptables but still doesnt work
I have a CentOS installation as a guest VM with VirtualBox. I have two ethernet interfaces, eth0 with NAT and DHCP, and eth1 with Host-only adaptor and static IP.
I have oracle installed in this ...
3
votes
0answers
112 views
To what extent does LXC manage configuring the network interface in a container?
In the LXC config file we can specify an IP address for a container:
lxc.network.type=veth
lxc.network.link=br0
lxc.network.ipv4 = 10.1.0.35/16
lxc.network.flags=up
lxc.network.hwaddr= ...
3
votes
0answers
769 views
I can SSH and HTTP, but not ping or access particular UDP services over my LAN
So I've encountered a weird problem when trying to set up a Linux server running a variant of CRUX Linux. I am trying to configure it to be a Teamspeak server, but no clients can connect. The ...
3
votes
0answers
649 views
tunneling FON traffic via Tor
I would like to tunnel the traffic of my FON router through Tor.
For that I added a second network card to a local server and connected the FON router to it. Then I set up a DHCP server and configured ...
3
votes
0answers
571 views
Wireless rtl8187 freezes intermittently
I am using a wireless USB ALFA 036H. Linux Mint (32-bit) recognizes it without any drivers but it stops downloading/uploading and I have to reconnect to get it to work again.
I tried to find a ...
2
votes
0answers
51 views
Network connectivity issue between different hosts from a network namespace in one host
I have created two Ubuntu 12.04 VMs using VMWare Player with NAT network configuration. I am able to ping them from each other. After that, I created a network namespace in one of them and add a ...
2
votes
0answers
28 views
AppArmor Profile: Deny internet access
I want to deny the internet permission for some applications. Therefore, I tried first to deny the internet permission for ping, but it doesn't work.
Here is the profile of /etc/apparmor.d/bin.ping
...
2
votes
0answers
24 views
Configure routes to access WAN and LAN through diffrent interfaces
In my organization. Some useful technical websites are blocked by the firewall.
In my machine i got three interfaces eth0, wlan0, wwlan0
eth0 Link encap:Ethernet HWaddr 00:9c:02:93:b1:b4
...
2
votes
0answers
31 views
Confusing my IP stack
At work, I have an Oracle GRID/RAC cluster of two hosts, including Oracle's SCAN functionality. Picking one host: eth0 is the management port on 169.254.10.25. eth1, eth2, and eth3 comprise bondeth0 ...
2
votes
0answers
28 views
iptables drop length and TTL condition doesn't work
With iptables utility on Linux host need to create mini firewall. I need to drop all incoming connections with package length greater than 722 AND TTL greater than 22. Need exactly AND. Drop only if ...
2
votes
0answers
48 views
sctp traffic generator
I'm looking for a free SCTP/TCAP traffic generator (specially for MAP, Camel and INAP protocols).
I need to build some message flow scenario and generate load in order to test some application
Thanks
...
2
votes
0answers
23 views
Manually adding static ip not resolved after a while
Hi Unix/Linux community,
I have a small problem with a device I am connecting to my laptop, running Debian Linux. While connected to a router on my wlan1 interface (using wicd, if that matters), I am ...
2
votes
0answers
98 views
DHCP lease acquired , yet no ping, not even to default gateway
I've just installed Debian Wheezy on my PC using netinstall.
I can only use its wifi. My interface has been recognize by the system, and I've used:
iwconfig wlan0 essid MY_HOME_AP
(I've switched ...
2
votes
0answers
74 views
CentOS 5.5 server dropping & blocking connection
I'm running a CentOS release 5.5 (Final) server running the LAMP stack amongst other things.
When working on a web project with numerous active connections to the server box (Plesk over HTTP, SSH and ...
2
votes
0answers
92 views
Find hostapd's access point SSID
I have a Linux machine operating as an access point using hostapd and dnsmasq. The AP is working fine (the device is wlan0), but I am having difficulty finding the SSID of the AP for monitoring ...
2
votes
0answers
56 views
RNDIS Server to make a computer as a peripheral
First of all my goal is this, have a computer as a peripheral device to connect it to anyone's computer with ssh protocol or web. The idea is doing this by using a plug and play USB cable .
Facts ...
2
votes
0answers
163 views
Difference between txqueuelen and ethtool tx
What's the difference between the txqueuelen setting that can be applied with either:
ifconfig eth4 txqueuelen 5000
ip link set eth4 txqueuelen 5000
And the tx ring size setting that can be applied ...
2
votes
0answers
77 views
Raspbian: how ifplugd works on lo and other interface
On my raspbian, I'm wondering why ifplugd (link detection daemon for ethernet devices) is also running on the lo the loopback interface.
The ps command displays:
/usr/sbin/ifplugd -i lo -q -f -u0 ...
2
votes
0answers
171 views
Broadcom or Modem wireless connection problem
I have a BMC42142 wireless adaptor
lspci -vnn | grep 14e4:
02:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
and I can't connect to the wireless ...
2
votes
0answers
222 views
Rogue AP channel hopping problem
I am able to set AP but despite explicitly setting channel for monitor interface and AP, AP frequency changes regularly.
My setup:
OS: Kali Linux 1.0 (booted from a USB stick)
External network ...
2
votes
0answers
205 views
iptables REDIRECT in combination with matching on interface vs. IP address
I've successfully set up Tor for transparent proxying using iptables (ie, all outgoing traffic is sent through Tor without the application's knowledge). In doing so, I discovered both an odd problem ...
2
votes
0answers
116 views
Check via Shell-script if server currently streams via dlna
Currently I'm running uShare to stream videos from my home-server via DLNA to the TV. On the server there is also running a bash-script which checks if a user is connected via ssh or Samba. If this is ...
2
votes
0answers
158 views
Network block after restart
I'm running wheezy and I don't want to install network-manager.
I have a problem with network interfaces. When I restart the interfaces I cannot use any connection anymore.
I cannot reach internet ...
2
votes
0answers
454 views
Adding multiple gateways for separate physical interfaces with various metrics/priorities
My system has 3 interfaces. These are eth0, eth1 and usb0.
eth0 is linked to my router and is the line I want to be used by default.
eth1 is un used.
usb0 is a 3G phone that's tethered.
My issue is ...
2
votes
0answers
145 views
Mint changes default route when eth0 comes back and breaks existing tcp connections
I have two interfaces on my laptop (eth0, wlan0). lets say I am moving away from desk and connecting to an internal network A using openvpn software which uses wlan0 as gateway. I then ssh to a few ...
2
votes
0answers
153 views
B.A.T.M.A.N. working with cable, not with wireless
I'm creating a mesh network with B.A.T.M.A.N..
The version is 2011.4.0 in host A, 2012.3.0 in host B. I've setup the network as explained here.
I can ping bat0 interfaces if the connection is done ...
2
votes
0answers
364 views
CUPS can't print to printer on network
I am having problems printing to the printer connected to my (SBS2003) business's network.
I know the IP of the printer and I can ping it and even print files from it by going to 192.168.0.50 in ...
2
votes
0answers
109 views
Bonds vs. Aggregators
I'm almost to the point where I can post the solution I wound up with for my complex port bonding question. However, in reading the bonding.txt file, I see this option text:
ad_select
Specifies the ...
2
votes
0answers
170 views
Windows shared network printer keeps using rear tray as source
I am trying to set up network printing on my Linux Mint 15 (64 bit) system (dualboot with Windows 7). The printer is a Canon PIXMA MG5100 and is connected (via USB) to a computer running Windows XP. ...
2
votes
0answers
219 views
Hub and Spoke is not working
I have configured Hub and Spoke using openswan ipsec. Tunnel is immediately getting UP but the problem is:
Spoke1 can ping/access HUB's LAN and vice-versa (S1 -- HUB && HUB -- S1)
Spoke2 can ...
2
votes
0answers
262 views
How to setup networking for Linux Mint - VM when host machine uses a PAC file
My host is a Windows 7 x64 machine. The office network uses a PAC file for the LAN settings. So, under Internet Options -> Connections -> LAN Settings, I have Use automatic configuration script with ...
2
votes
0answers
607 views
Ubuntu : after upgrade, wire network is unstable
Yesterday I have upgraded to Ubuntu 13.04. After I upgrade, I have a serious problem with network (I use wire network): my network is unstable. After a short time using it, it often disconnects. It ...
2
votes
0answers
60 views
How to specify which interface an application uses?
Imagine this example: you have direct access to the internet on eth0, and you have a VPN on tun0.
You want one application to access the internet directly through eth0 (using X public IP address) and ...
2
votes
0answers
520 views
ping receives no packets, but tcpdump can see them coming in
I'm migrating an old Ubuntu OpenVZ instance (Jaunty) to a new CentOS 6.3 host (using vzdump/vzrestore).
Now networking does not work properly. Facts:
It works just fine if a setup a new OpenVZ ...
2
votes
0answers
113 views
Trying to install DIP (Dialup Networking) package for SLIP protocol
We are trying to interface with a wireless modem that connects to a computer via a com-port DB-9 connection. It uses SLIP in the sense that the modem hosts a SLIP server and requires the interfacing ...
2
votes
0answers
245 views
Failed to execute shell script from “network” udev rule to change the MAC-address
I am trying to execute a shell script from udev rule, when a network interface is added, as follows:
SUBSYSTEM=="net", ACTION=="add", KERNEL=="eth*", PROGRAM="/usr/local/bin/changemac.sh", ...
2
votes
0answers
166 views
Connected Android device - brings the network down?
I have dealt with sensitive development under Android, and have recently decided to switch to Linux now sit under (Mint 13 - KDE).
But strangely, when the Android device is connected, my network goes ...
2
votes
0answers
616 views
Send print job to printer immediately without queueing, aka increase print performance
I have a ruby/rails web application, one action of which sends PDF files that have been generated by the app to a Xerox 4127 printer on the network. This is accomplished via shelling out and running ...
2
votes
0answers
421 views
Missing Firmware for Wired NIC on Debian
I'm trying to install debian 64bit from a debian live image using YUMI on my usb drive. I'm installing it on an Inspiron 6400, and there is missing firmware. I can't connect to the internet ...
2
votes
0answers
687 views
Can't ping gateway after bridge
I am running CentOS 6.3 with NetworkManager disabled.
I was trying to set up a network bridge to try out setting up guests w/ kvm. I was creating a bridge before setting up stuff with kvm, just since ...
2
votes
0answers
169 views
why is FQDN using external IP address
When postfix connects to the FQDN dur.bounceme.net it uses the external IP address:
root@dur:~#
root@dur:~# tail /var/log/mail.log
Aug 28 04:39:45 dur postfix/master[6667]: terminating on signal 15
...
2
votes
0answers
375 views
VirtualBox with aMule - How to configure network, port forwarding… properly?
for security reasons I am running aMule inside VirtualBox.
Guest and Host systems are Linux (to be more specific Arch 64 distro)
Host system has public ip directly connected to internet (no router)
...
