Managing and using network connectivity on a unix system

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2
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0answers
57 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
67 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
10 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
68 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
113 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
23 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
1answer
77 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
99 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
99 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 ...
0
votes
1answer
59 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
84 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
14 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
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0answers
29 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
75 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 ...
3
votes
1answer
190 views

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
256 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
538 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
103 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
1answer
651 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
29 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
102 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
266 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
28 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
57 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
24 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
88 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
293 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
371 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 ...
9
votes
2answers
439 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 ...
5
votes
2answers
80 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
56 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
31 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
43 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
462 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 ...
2
votes
1answer
114 views

Redirecting Request on Device in Access Point Mode

I have a Raspberry Pi with a wifi dongle that is configured for Access Point mode (wifi hotspot). When a user is connected, I want to redirect any url they enter to a specified IP (the devices ...
4
votes
3answers
308 views

How to configure a computer as a hotspot?

I use OpenSuse 13.1 (with KDE). On my phone I can turn on a hotspot just by pushing a button. I have been researching how to do this on linux, I haven't found an easy way yet. What I want to ...
0
votes
1answer
32 views

How to connect to wifi on a Gnome 2.24.1 system?

A friend gave me an old laptop running Gnome 2.24.1. It's been in storage for years but seems to run fine, albeit with this old OS. Now, I don't know too much about Linux, but I'd like to set it up ...
0
votes
1answer
47 views

Using WiFi port as redundant link

I want to use WiFi port of my server as redundant link for copper connection to my home DSL router. My router if SAGEM 2704 with very limited functionality. So practically the only possibility is to ...
1
vote
0answers
23 views

How can I use iptables to block certain processes from accessing the network? [duplicate]

I can set the processes to run under special uid's and use the technique from this SF answer: -A OUTPUT -m owner --uid-owner 400 -j DROP ...But are there any other ways to blacklist based on the ...
7
votes
2answers
166 views

SSH session through OpenVPN cuts off / locks up after a few lines

I have a large number of identical fanless PCs running debian 6 (ARM). Most of these are connected via comcast and work ok. There are some that are connected to 'WiMax' modems and are having ...
1
vote
0answers
32 views

Why, When and Where is phy used

Reading that iwconfig is deprecated and should be replaced by iw, I was for the first time confronted with phy. I understand that phy0 and so on represent physical devices, and perhaps iwphy # is ...
3
votes
2answers
784 views

ssh from host to guest using qemu

How do I setup ssh from the host to the guest using qemu? I am able to use port redirection when I boot the VM without any special parameters, as follows: /usr/bin/qemu-system-x86_64 -hda ubuntu1204 ...
0
votes
0answers
81 views

no network connection

I am Newbie to CentOS. I have problems with my network connection eth0 I created /ifcfg-eth0 file since it was not present at /network-scripts. I tried ifconfig which does not display eth0. I have ...
1
vote
0answers
22 views

A Way Around: Host Accessing Guest in Internal Network?

folks. I have installed a Linux virtual machine in VirtualBox with 2 adapters: vnet0 is a host-only network and vnet1 is an internal network. I am able to get the IP address given by vnet0. ...
2
votes
2answers
459 views

Redirect requests to my external IP/port to an internal IP/port?

I have a dedicated server running KVM virtualization with n public IP addresses dedicated to n-1 web-facing virtual machines. Now I'd like to set up some web-facing VM's that don't have a dedicated ...
3
votes
1answer
213 views

Arch Linux not picking up static DHCP lease from DD-WRT

I have a Arch Linux system on my home network and its MAC address is setup in my Linksys running DD-WRT to receive a static lease. However, this system is not getting the static lease from the DD-WRT, ...
0
votes
2answers
113 views

How to determine eth0 gateway address when it is not the default gateway?

In my system I have eth0 (which may or may not be connected) and a modem on ppp0 (which always may be up or down). The the case where both interfaces are up and ppp0 is the default route, I'd like to ...
1
vote
1answer
104 views

Masquerade not working sometimes

I have an issue with private network traffic not being masqueraded in very specific circumstances. The network is a group of VMware guests using the 10.1.0.0/18 network. The problematic host is ...
0
votes
0answers
139 views

Ping IP works, nslookup fails. New Kernel

I am compiling my own 3.14 kernel. I fear I may have left out some important networking feature to get DNS working. I can't resolve domain names. I can ping my DNS server. I can resolve using that ...
1
vote
1answer
243 views

Where is my eth0 configuration on Wheezy

I have a perfectly happy Debian Wheezy 7.4 install that sets up eth0 as DHCP. But as I want to set a static IP address for it, I navigate to /etc/network and open up the interfaces file and see the ...