the IP protocol and IP addresses

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4
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1answer
243 views

Looking for elegant iproute2 solution for host w/ 2 interfaces on 2 networks and 3 gateways

I've got a Linux webserver with 192.168.0.2/24 assigned to eth0 and 172.16.0.2/24 assigned to eth1. I must not change this. Here's the routing so far: 172.16.0.0/24 dev eth1 proto kernel scope link ...
3
votes
1answer
115 views

IP rule table look up does not seem to work

I have a sytem with three network interfaces. Below is the configuration that I'm trying to set up. wlan0 (its actually an WiFi AP interface) - other devices connects via this interface. net1 - ...
2
votes
1answer
278 views

Use two NICs for different subnets

In my office I have use a system with two network cards. I want to use both at same time. I have four subnets in my LAN. I want to route two subnets (192.168.2.0 and 192.168.4.0) through eth0 and ...
2
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1answer
80 views

RapidIO packet filtering in Linux

I was wondering if there is support in Linux Kernel for RapidIO packets filtering, something similar to iptables, but based on RapidIO header?
2
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1answer
507 views

ICMP destination unreachable

I am working on an Arch Linux machine with an ethernet interface eth1. I have created the interface eth1:0 using ifconfig and given it a dummy hardware address (00:01:02:03:04:05). When I send a UDP ...
3
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0answers
42 views

delay in IP route deletion

(Apologies if this is the wrong StackExchange for this question, but there does seem to be some confusion regarding appropriate targeting of IP networking questions) I am very much a network newbie, ...
2
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0answers
132 views

Is Traffic control inside namespace on ports created by OpenvSwitch supported?

I am trying to limit the bandwidth of an interface inside a namespace using tc without much success. Seems it's not supported according to ...
2
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0answers
88 views

Network connectivity trouble to non-routing multi-homed hosts?

I have two networks: A and B (172.16.2.0/24 and 172.17.2.0/24). A is Ethernet, B is WiFi. An OpenWRT router connects A and B, and most traffic gets passed OK. Default route on router leads to a ...
2
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0answers
134 views

forward virtual interface network in KVM guest to the physical interface in the host machine

I am trying to experiment with Linux IP routes. This is what I have so far. I have a host machine whose network details are as below. wlan0 inet addr:192.168.1.9 Bcast:192.168.1.255 ...
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0answers
344 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
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0answers
105 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
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0answers
31 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
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0answers
146 views

How to fairly share bandwidth between IPs with tc?

I have a linux router (d-link 320-nru) with tc installed. I have some users' computers to fairly share bandwidth between them. Also there is such complication as inconstant uplink bandwidth. How can ...
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0answers
6 views

Add vlan to interface with unique mac - different syntax for different Linux distros

I need to add a subinterface to an existing interface, which is on a VLAN. Furthermore, the subinterface must have it's own MAC address. Through the man pages I found this syntax which works fine on ...
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0answers
19 views

No “rwnd” option to “ip route” for managing the receive window?

Context: I'm doing some self-guided studying on TCP Window shaping. The scenario I'm trying to control for are clients which will be pulling down large amounts of data in addition to their normal ...
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0answers
47 views

Setup public IP address on LXC container

Can anyone tell me how to setup a network interface for each LXC container so that each container can have its own dedicated IP address? Here's what the /etc/network/interfaces file on my host node ...
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0answers
41 views

Network tool to monitor IP packet fragmentation

Is there a tool, similar to iptraf, that would let me see how many incoming/outgoing IP packets get fragmented/defragmented, and what percent of traffic they are? I know this can be counted with the ...
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0answers
57 views

IP packets fragment randomly

I've observed the strangest thing - the same packet, same size, send through the same interface sometimes gets send whole, and sometimes gets fragmented, as if it exceeded the interface MTU... 1472 ...
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0answers
34 views

What is the first event/file/log in linux that appears/changes on boot that signalizes network being up?

I have a vSphere farm with virtual machines and python script that handles cloning and managing of those VMs. I also have a machine (RedHat 6) that I clone if I need a new one. It has a script that ...
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0answers
19 views

Is dynamic DNS the only possible way to establish a connection between two routers with temporally IPs?

the situation is as follows. My and my friends Pcs are connected within a WLAN with a local IP to a router, the router gets its global IP from different ISP with a limited pool of IPs, so the ISPs ...
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0answers
26 views

How to make sure to get the Main/External IP without regard to network device type/name

Hello, I need to make sure I have the external or at least the main IP address for a given machine, regardless to the device type/name. I quickly wrote that tiny script for that purpose, but I need ...
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0answers
349 views

ping localhost sometimes fails with sendmsg: Operation not permitted

I have a problem with network adapter (i think) , look I trying to ping my self and got a error sometimes, how this can be ? First time in my life i see this. # ping 127.0.0.1 PING 127.0.0.1 ...
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61 views

Float MAC address in Heartbeat format

It's been about a month where I've been working with "High Availability" on Elastix based on DRBD and Heartbeat. As you maybe be familiar with it, there is a file in Heartbeat called haresources ...
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0answers
43 views

Add ipv6 route so packets go to eth0

I have 2 VM Ubuntu 14.04 in VirtualBox. They are connected in internal network. One Ubuntu is sending multicast data (via VLC) and one is receiving. I added this in both VM's so it works via IPV4 ip ...
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0answers
62 views

Egress packets do not use non-default routing table

I made a custom routing table named test: # ip route show table test default via 10.10.10.126 dev eth0 # As seen above, it contains only a single route. As a next step, I made a rule where traffic ...
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0answers
33 views

NAT-T set up using 3 linux machines

I am trying to have a simple NAT-T setup using 3 linux machines. Linux1 Linux2(NATdevice) Linux3 (eth0) 192.168.1.51 <--->(eth1)192.168.1.80 & ...
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0answers
48 views

How to run a specific TCP client with a different IP?

My server has 3 ips. I use cronjob doing some api job. But this api has some limit: 100 calls/day. So how can i set a special ip for running some special script via cronjob? Thanks. 0,20,40 * * * * ...
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98 views

Linux Source Routing with one gateway

I've a Linux box which have IP 10.1.1.100/24 on eth0 with gateway 10.1.1.1 and as well as 20.1.1.1 on eth0:1 and 20.1.1.2 on eth0:2 . Is there any way that I could communicate to a remote machine ...
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0answers
169 views

Debian access point is detected, but provides no Internet access

I am use Debian sid. I want to share my network (ppp0) via AP (Access Point) to my mobile device. This is my configuration. /etc/hostapd/hostapd.conf : # WiFi Hotspot interface=wlan0 driver=nl80211 ...
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0answers
88 views

What should be the right dhcp configuration for generating a new network over eth0?

Even not under a real server like scenario, I'm testing with dhcpd for learning and practice purposes. I'm using Ubuntu 12.04 LTS. I want to offer a network by my eth0 interface. I receive ip and so ...
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0answers
273 views

Share (masquerade) Internet connection from Debian desktop to a bunch of computers

I need to share the Internet connection of my Debian desktop to some other devices (a Mac Laptop, and an Android tablet). The Debian desktop is connected to the local network via eth0, and the rest ...
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0answers
176 views

SSH to a machine that is getting it's network connection from an Android device(Google TV)

I have a Linux(Ubuntu) machine for my HTPC. It's running XBMC and I control it via my IR remote control. I don't have a (wired) keyboard to control it. It has Wifi adaptor but it's not installed. I ...
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0answers
100 views

coLinux strange networking trouble

Installed coLinux, Debian, sshd inside, pcap-bridged networking, and I can connect to ssh service from coLinux console and from LAN. Now, the strange part: I cannot connect to Linux guest ssh service ...
1
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0answers
346 views

Usb tethering with linux and htc desire s other than rndis_host

I want to share the connection of my htc desire s with linux and I'm doing it but if it is possibile I'd like to avoid using the rndis_host module. The tethering can be configured as "windows" or "mac ...
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0answers
544 views

AIX multihomed multicast

On my AIX machine if I run netstat -ia I get: Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll en0 1500 link#2 1e.18.1.1e.78.2 385229 0 1091655 0 0 ...
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0answers
11 views

IPvsadm, cannot get it to work at all

From my production server, I should make several connections (>50) to two different IP addresses. I am trying to load balance among these two IP addresses when making outbound connections so that the ...
0
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0answers
60 views

vsftpd conditional pasv_address (internal ip vs. external ip)

I have a vsftpd server setup that i'd like to be able to access with passive transfer from an external ip (use of my domain name) and also from my local network (192.168.1.x). Currently I have ...
0
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0answers
18 views

static ip address in yast

I think that I set the FQDN for the server in yast. How do I set the static IP address with yast? I go to network devices => network settings, see my NIC: YaST2 - lan @ arrakis Network Settings ...
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0answers
13 views

Changing static on SuSE linux

I have recently received a Linux Suse Ent server that has an active service agreement attached with it. The service requires an VPN connection so I have to change the IP, Default gateway. I have ...
0
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0answers
17 views

What's wrong with the mapping?

I am running two docker containers one is for hadoop basic services and other is for flume. Services are running successfully. I linked two containers env variables are automatically set by docker ...
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0answers
21 views

No DHCP OFFERS on several PCs in same network

I have different PCs and 2 of them don't get an IP-address (because they don't get a DHCP-offer) by the ISP, while the others do. I pluged them directly in my cable-modem, one after another. But when ...
0
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0answers
42 views

Accessing CentOS7 server from public

recently I switched to CentOS 7 OS and set up basic webserver with Apache. I had no problems configuring SSH, FTP and LAN access to the webpage. But accessing from other IP's won't work. I'm 99% sure ...
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0answers
70 views

How to bind IP address to MAC in autoyast?

Is it possible to bind IP to physical address in autoyast config file? The following code doesn't do the trick: ... <interfaces config:type="list"> <interface> ...
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0answers
1k views

Tried changing to static ip in RedHat 6.5 using VMWare. Unable to access the internet now

I followed resources on the internet to assign static ip address for RedHat 6.5 installation in VMWare. I am unable to access the internet after that. My terminal output of the files I changed are as ...
0
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0answers
77 views

Creating multiple proxies on a single VPS

I am trying to create SOCKS Proxies on my Debian Linux VPS. I was just wondering what is the best way to go about doing this? I have tried things like Dante and it doesn't support multiple Proxies.
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223 views

Apache server in raspberry PI not visible from outside( public IP)

I have made a fresh install of Arch Linux ARM into a Raspberry PI and I mounted there a LAMP, all fresh. I have another Arch(x86) in my laptop with Apache also there, and as far as I know, two web ...
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0answers
55 views

Connecting one network interface to the Internet disconnects the other interface

We have got an HP-UX server, but whenever I got connected to that machine using the ethernet cable I got disconnected from internet although my laptop has 2 nw interfaces. One wired one wireless. Why? ...
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0answers
45 views

Possibility to use app in LAN and via Internet

I use web based (https encapsulated) app in my home network and via Internet. The app has dedicated Linux desktop client (I use Mageia ver4 Linux for laptop). Of course server address I have connected ...
0
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0answers
279 views

On ssh connection the auth.log shows as source IP the external IP of the server instead of the IP of the client

I have a very odd situation with my ssh connection. Every time I connect to my server, whatever is my external ip, the connection have as source the server's external ip. Example Server S.O.: ...
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0answers
12 views

Outside IP curl cron on FreeBSD

I have FreeBSD 10.1 (ssmtp,curl) I want to receive outside IP from cron. */10 * * * * root curl http://ifconfig.me/ip | mail my@mail But I got the following response Null message body; hope that's ...