Tagged Questions
A computer network allows sharing of resources and information among interconnected devices.
0
votes
1answer
27 views
Get a faster response for a ping
I noticed that the answer to my ping is slower in one debian machine that another.
For the first one when i ping to 8.8.8.8:
64 bytes from 8.8.8.8: icmp_req=1 ttl=47 time=29.6 ms
For the second ...
1
vote
1answer
20 views
Parabola installation, “network is unreachable” despite working ping [on hold]
I am trying to install Parabola(closely related to Arch Linux).
As my wireless adapter does not work with linux due to some firmware issues, I have to use a wired connection.
So, while a ping to ...
0
votes
0answers
30 views
Able to ping one way not vice versa [on hold]
I am having two device which are connected to RGMII interface.
One side interface name is eth0 and another side name is fp0.
I have configured eth0 interface with following command:
# ifconfig eth0 ...
4
votes
1answer
22 views
Skip routing via lo interface for outgoing packets
Introduction:
I have following load balancing configuration:
10.0.1.31 - lb
10.0.1.32 - node1 (tomcat + mysql)
10.0.1.33 - node2 (tomcat + mysql)
I'm using keepalived which is redirecting packets to ...
3
votes
1answer
24 views
LXC container to use “virtual” interface from host (namespace semantics)
So according to the documentation on the Ubuntu LXC documentation the following statement can be found at the time of this writing:
A NIC can only exist in one namespace at a time, so a physical ...
1
vote
1answer
24 views
Virtual always connected network interface with static IP?
How do I create a virtual, always connected network interface with a static IP on Linux? It must work when all my physical interfaces are disconnected.
Looking for general information regarding this, ...
1
vote
0answers
15 views
I'm wondering about CUPS security. What can I do?
I run Debian Wheezy on a old Acer Aspire One ZG5 model netbook as a server. I have a printer shared to all my other systems and I'm worried about security. On the server I have IPtables set up to ...
3
votes
1answer
53 views
Blocking Websites with /etc/hosts
There's a website, www.example.com, that I tried to block myself from accessing because it wastes too much of my time. So I configured my /etc/hosts file. I added the following lines, to block the ...
1
vote
1answer
44 views
A question about wlan0 / eth0 and wireshark
I'm using wireshark to listen to packets on my own personal home network.
I have my Desktop with Debian and Windows 7 running and my laptop is running the same setup; Debian and Windows 7.
I ...
6
votes
3answers
378 views
What are the benefits of using several IP addresses on a server?
With ifconfig, I am able to configure multiple IP addresses on a single network interface card. Why would I want to do that and how would I later utilize several addresses, e.g. how does software know ...
7
votes
2answers
393 views
How to make traceroute trace beyond 30 hops?
Some of the servers I use traceroute on, are more than 30 hops away. How do I make traceroute trace beyond 30 hops?
0
votes
2answers
34 views
How to estimate server's network connection quality with traceroute?
I need to estimate network connectivity of various dedicated server hosting providers, e.g. how fast and uniform will my services perform when hosted there. I use traceroute command on my home ...
2
votes
1answer
39 views
Non-administrative network-related tools
I know there are tools to inspect packets (e.g. wireshark) or to simulate latency/packet loss (e.g. netem), but they all seem to require administrative permissions to inspect/modify packets.
I'm ...
2
votes
0answers
19 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
...
1
vote
2answers
47 views
simply change IP after installation on server minimal
I'm using CentOS 6.5 minimal.
Is there any way to display a dialog to change the IP after login? In other words, some way of entering a command with a dialog to change the IP?
1
vote
0answers
8 views
Reverse proxy for OVZ containers
Is it possible to use a reverse proxy to channel all network traffic from one domain to a single container using the same IP for all the domains?
The reverse proxy would have to read the domain and ...
2
votes
1answer
53 views
Hosting on freeBSD
I already installed FreeBSD 10, Apache 2.4 and PHP 5.5. I also just bought a domain from GoDaddy, and I would like to setup a web-hosting in my server, in order to make my website to be reachable from ...
0
votes
2answers
64 views
ping not working for google alone
one of my friend changed some network config in my laptop at home, He said he tried something related to block a website(he tested it with www.google.com).Now www.google.com not loading . Even he dont ...
0
votes
0answers
28 views
How can I programmatically determine whether a URI, hostname or IP address is to the local host machine? [migrated]
Given a target URI, how can I programmatically determine whether an HTTP GET of that URI would be making a request to the local machine?
Context: There are two reasons I need to do this. One is that ...
0
votes
0answers
21 views
Networksetup, how do I make an IF loop for error on connection?
I'm attempting to connect to a network in Mac OSX with this command:
networksetup -setairportnetwork eno "NETWORK_NAME"
and can most often connect to the network.
But I need to make an IF loop for ...
1
vote
0answers
18 views
Conntrack TCP Timeout for state stablished not working
Im using a private IP address and I want to keep alive SNAT entries in my Router (Gateway) for at least two hours (some windows apps of my network are using TCP keepalive set to 2 hours). Gateway is a ...
4
votes
1answer
35 views
How does init determine which devices to modprobe?
I'm building a totally custom initramfs for a netbooting project and in the process learning a lot about it, but I'm a little puzzled by the loading of modules.
I know modprobe can be used to load ...
0
votes
2answers
53 views
traceroute gives only stars + how to fix
Please advise about the following problem. When I do:
$ traceroute 8.8.8.8
I get in the output showing only stars, even though pinging to google.com ( 8.8.8.8) appears to be working.
Please ...
-5
votes
0answers
26 views
How do I configure Wordpress/Wamp for Intranet? [closed]
I have Wamp for windows and Wordpress installed on my laptop. I can view everything at localhost. I would like to use Wordpress for an intranet site. How can I make my Wordpress viewable on all the ...
0
votes
1answer
35 views
Change network values from sysctl.conf
Can I change the value of those parameters (spoofprotect, syncookies, dynaddr_hack, notimestamps, nobroadcasticmpecho, ip_forward) from sysctl.conf file in systemd?
4
votes
1answer
38 views
Can iptables be used to monitor TCP timeouts/resets system-wide?
I'm trying to determine if an application's connection to a database is internal to the application or due to a networking event. This seems like something netfilter would have system-wide visibility ...
0
votes
0answers
15 views
What routing protocol is used in debian Adhoc networking [closed]
I have multiple devices all communicating through an ad-hoc network. Is there any way of telling what routing protocol is being used to route the data to its destination?
0
votes
0answers
10 views
How to stop network mount for a specific logical interface definition?
I am running Debian with two logical interface definitions in /etc/network/interfaces.
iface switched inet dhcp
iface crossover inet static
In /etc/fastab I have a CIFS mount definition, which gets ...
0
votes
0answers
26 views
How to use networks default gateway dynamically? [duplicate]
I want to use specific interface for specific use from different different application. I am using Ethernet, Wi-Fi and 3G modem interfaces in my embedded Linux set-up. Now my set-up is up with ...
1
vote
0answers
24 views
How to find 3G signal strength when connection is already established by pppd?
I want signal strength information when pppd connection is already running. I am running pppd on embedded Linux environment and 3g modem manufactured Cinterion.
I knew commands from which i am able ...
2
votes
0answers
78 views
+50
Fedora 20 dosen't accept correct PIN for mobile broadband
I have a problem with the WWAN (Qualcomm Gobi 2000) in my Lenovo ThinkPad W510.
I can not unlock my SIM card with the correct PIN. I enter the PIN in this dialog
and after this
I get immediately ...
2
votes
1answer
161 views
SSH Setup - How will the router know my computer's ip?
I'm very new to the networking side of the house and am trying to set up SSH on my new Ubuntu machine. I have my DD-WRT router working with DDNS now and can log in to the router page -- but I'm not ...
1
vote
1answer
41 views
Enabling wired internet connection with dhcp during Arch Linux Installation? [duplicate]
From what I read, wired internet should work out of the box during the Arch installation. However, I'm having difficulties. The dhcpcd service is running, but it says:
# systemctl status ...
0
votes
0answers
68 views
What is wrong with these iptables' rules?
The following is what I got after googling:
iptables -A INPUT -i lo -j ACCEPT
iptables -A OUTPUT -o lo -j ACCEPT #allow loopback access
iptables -A OUTPUT -d 255.255.255.255 -j ACCEPT #make sure you ...
0
votes
0answers
49 views
Setting up hostapd with a iwlwifi device to run a hotspot
I am trying to configure my opensuse 13.1 system to function as a hotspot (on my dell xps13 computer).
So I tried setting up hostapd as explained here, but I get an error:
hostapd ...
0
votes
0answers
17 views
pfSense and Belkin Integration
I am in a unique situation. I want to have my previous Linux box as a router, but I don't have wireless capability on it or even a second ethernet port, so I was wondering if there was a way I could ...
0
votes
1answer
17 views
How to add Ip Aliases with Two Gateway on same nic Centos
I have 2 allocated address range, example
10.10.12.25/28
10.12.12.24/28
How to add Ip Aliases with Two Gateway on same nic with Centos?
2
votes
1answer
39 views
mutliple default gateways for alias interfaces (SOLVED)
Alias interfaces defined in /etc/network/interfaces cannot have multiple default gateways. Unfortunately I would like to use the same interface to access 2 differents nets, and I need to define 2 ...
0
votes
0answers
7 views
netatalk virtual users using ftppasswd (not found) on Debian wheezy
I configured my ProFTP server for using virtual users using the ftp.passwd file. Then I used the following command to add a user:
ftpasswd --passwd --name developer --uid {www-datas uid} --gid ...
0
votes
1answer
38 views
How to access my webserver from the host machine? [duplicate]
My host OS is Gentoo, guest OS - Fedora. I have a web server on Fedora on port 8686 and it works perfectly on guest OS, but I can't access it on my host OS.
I tried to use bridged network (then I got ...
2
votes
0answers
19 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
2answers
50 views
Lose network connectivity when bringing up second NIC
I currently have a CentOS 6.5 box with 4 NICs.
eth0, eth2 and eth3 all come up fine, however when I bring eth1 up with an IP address, even on it's own, it causes complete network loss.
If I remove ...
4
votes
1answer
74 views
bridge does not forwarding packets centos
I am using CentOS 6.5 64
and use xen to create a virtual machine (CentOS)
ifconfig
[root@CentOS ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 08:00:27:54:B3:FA
inet6 addr: ...
2
votes
1answer
48 views
Airdrop compatible
Is there anything in Linux that implements whatever it is that makes Airdrop in OS X work? I'm not really familiar with that program, so I'm not sure what protocol it's using to communicate. update ...
8
votes
2answers
333 views
How can I find available network interfaces?
This is in regard to linux, but if anyone knows of a general *nix method that would be good.
I booted a system yesterday with an ethernet cable plugged in. "NetworkManager" is not installed, so once ...
3
votes
0answers
52 views
How to create Virtual Network for VM's
I have downloaded a Linux Live CD which I am required to do pentesting using VirtualBox . Live CD is configured for router with Pool Starting Address 192.168.2.2 . Now problem is that my router is't ...
1
vote
1answer
34 views
Create a VPN network between a live server and private networks
I have a VPS (Cent OS 6) on a live IP. I have several other machines (All linux, mostly Cent OS 6 and a few Android devices) sitting behind NATted ADSL Routers on several sites.
I need to create a ...
1
vote
1answer
27 views
What is the meaning “MAC MISSMATCH”? [closed]
I have every day in the log the few lines start with:
MAC MISSMATCH:IN=vlanXX OUT= MAC=ff:ff:ff:ff:ff:ff:bc:ae:c5:da:70:a6:08:00:45:00:00:4e SRC=xx.xx.xx.xx DST=xx.xx.255.255 LEN=78 TOS=0x00 ...
3
votes
2answers
21 views
How to configure Unison for real peer-to-peer?
I have a handful of devices, and am considering keeping them in sync with Unison.
The devices are not running all the time, they are switched off a few hours per day, not necessarily at the same ...
6
votes
3answers
329 views
traceroute and ping from school network
I have a server in my school. If I do a traceroute command for some host within our school network, I am able to reach the host. So for example,
traceroute hostname.xxx.edu
traceroute to ...
