-1
votes
0answers
28 views

unable to browse the internet even when i connected to internet in ubuntu 12.10 [on hold]

Recently i was updating my Ubuntu from 12.04 to 12.10. After the Update i was unable to browse the internet.But I'm able to be Online in Skype. I don't understand why this is happening or where the ...
1
vote
0answers
17 views

LXC networking not giving outgoing connection

I have a LX container on Ubuntu 13.04 which has worked flawless for the last 161 days. I restarted the host and started all the LXC's and I'm allowed to connect to the LXC containers from the outside. ...
-8
votes
2answers
76 views

512 IP in one NIC - ubuntu - is this possible? [on hold]

Let's say that I have 1 network card and 2 blocks /24 of IP to assign: 150.50.50.0/24 150.60.60.0/24 I know, that I can only add 256 virtual interfaces to each NIC from ...
-3
votes
1answer
47 views

Keeping your server safe [closed]

I have a typical vps server with some custom sites on it running on port 80, a mail server, I don't have a DNS server and it is a default ubuntu 12.04. I don't have any admin panel, I am doing all the ...
0
votes
1answer
20 views

Prevent TCP Connections from Timing out on Restarting Service

On Ubuntu 14.04, an app communicates with clients at intervals of about 1 per sec to 1 per min. However the service have to be restarted regularly and this causes all the connections to drop/timeout. ...
0
votes
1answer
55 views

How to use both bonding and bridge?

I have a server with two network adapters. I configured bonding and it works. Here's the working configuration: auto lo iface lo inet loopback auto eth0 iface eth0 inet manual bond-master bond0 ...
0
votes
1answer
79 views

Tomcat & Java not listening on IPv6

We've got a webserver running Ubuntu 12.04 LTS, Tomcat 7 and Oracle Java. So far, we have been serving a web app on IPv4 address on ports 80 and 443 (80 redirects to 443). I'm trying to make the ...
1
vote
1answer
101 views

Wildfly 8.1.0 Final freezes (keeps connections forever / Channel was closed mid chunk)

I have just migrated an application from JBoss 7.1.1 to Wildfly 8.1.0 Final. But now from time to time (like every 2 days) Wildfly freezes, and I have to restart it. My application is basically ...
0
votes
0answers
2 views

Cannot connect to webserver from outside LAN [migrated]

I am running the Django development server on a computer at home on 0.0.0.0:80. I am also running an SSH service on port 22. I have configured my router (Virgin Media Superhub 2 with external IP ...
8
votes
1answer
365 views

Networking doesn't initialize properly when pxebooting Linux Mint (live CD) using cifs, but works with nfs

I have a TFTP/DHCP/NFS/SMB server (Ubuntu server 12.04 LTS) on 192.168.26.1. I use pxelinux to display a menu containing startup and installation options for Windows, an Ubuntu network installer, and ...
4
votes
1answer
57 views

Very High Network out in ec2 instance

I launched an ubuntu-14.04-64bit instance in Amazon EC2 two days back. And I started Tomcat 7.0.54 in that instance and deployed my application war files. It has no other software installed other than ...
0
votes
1answer
20 views

How to restrict all services to single domain in Ubuntu?

Someone has pointed an unknown domain to my server's IP address likely via A records. I would like to reject access to ALL services (httpd, ssh, mail, etc.) from this domain and only allow requests ...
0
votes
0answers
21 views

KVM Dynamic Rate Limiting

How can I dynamically rate limit the network speed on individual KVM instances? For example, I want to set a rule where if a user uses over 100mbps inbound or outbound bandwidth for over 30 minutes, ...
1
vote
1answer
95 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 successfully arp for the gw and they can ping (the request is coming in the ...
1
vote
0answers
280 views

Ubuntu 12.04/14.04 - apt-get 404 Not Found [IP: local-dns-server-ip 80] through proxy

I am trying to setup an ubuntu server (12.04 or 14.04) and have installed the server image onto the system I am using. Everything works fine until I try to run sudo apt-get update. When this runs, I ...
3
votes
2answers
152 views

Assign fixed IP address via DHCP by DNS lookup

Preface I'm building a virtualization environment with Ubuntu 14.04 and LXC. I don't want to write my own template since the upgrade from 12.04 to 14.04 has shown that backwards compatibility is not ...
0
votes
1answer
67 views

Why don't mails show up in the recipient's mailspool?

I have postfix dovecot running with local email system on thunderbird. I have two users on by ubuntu, mailuser 1 and mailuser 2 whom i added to thunderbird. Everything went fine, except the users dont ...
2
votes
1answer
72 views

Can I use NAT64 to route public IPV6 traffic to internal IPV4?

I have a bunch of public IPv6 addresses and some services that run IPv4 only. Can I use NAT64 to connect these services? Is there another solution like a proxy or something?
1
vote
1answer
79 views

Ubuntu 12.04 randomly dropping network connections

Good day, Few days ago I've installed new server on Ubuntu 12.04 and migrated all my data and services to it from an old one (pretty outdated 2011 year server). There are many different services ...
0
votes
0answers
40 views

OpenVPN identical subnets for client & server

I have an OpenVPN server (Ubuntu 14.04 routed mode) on a local network with a subnet of 192.168.0.0/24. The subnet it uses is obviously a very common subnet. My problem When a client is out and ...
1
vote
1answer
245 views

Ubuntu 14.04 getting ping: sendmsg: Operation not permitted

The problem is out of my league apparently, Ubuntu cannot access any network but somehow my VMs using virtual box are all able to access the internet. I have attempted to do the following changes but ...
1
vote
1answer
73 views

Split tunneling through two VPNs simeltaneously

I want to run two OpenVPN client instances on an Ubuntu Server 14.04. I have both .conf files that can work independently (both are set to different interfaces - tun0 and tun1). I want to run both at ...
1
vote
1answer
291 views

Changing the default gateway, multiple NICs

I have Ubuntu 13.10 (kernel 3.11.0-19-generic). On startup, the network configurations are as follows: dor@ubuntu:~$ sudo ifconfig -a em1 Link encap:Ethernet HWaddr 44:37:e6:4c:ca:0a ...
-4
votes
2answers
46 views

How to manage PING replies? [closed]

How can I manage, for example, my Ubuntu mashine so it doesn't (or does) respond to PING(ICMP ECHO_REQUEST - type 8) requests? Normally almost all computers in a LAN network responds to ping with an ...
0
votes
1answer
21 views

apache how to know if a download/upload is being processed

We've a web server used for heavy uploads/downloads (may take minutes). For doing maintenance disruption, we'd like to know if downloads/uploads are being processed at the current time. The things ...
0
votes
1answer
141 views

Can't connect to 2 different Linux computers via VNC (local network)

I have a problem connecting to Vino VNC server with 2 Linux Computers running Xubuntu. The computers are Based on the ODroid U3 chip which is ARM based. When both of the ODroids are on the same ...
-4
votes
1answer
48 views

Single machine server with many operating systems [closed]

Could possibly with single one high end Server with supported Virtualization We can have: - DHCP Server (Virtual Machine 1), - Firewall (Virtual Machine 2), - Squid proxy (Virtual Machine 3) - ...
0
votes
1answer
19 views

Using separated interface for virtualbox machine

I have a server connected to two network interfaces (via two different Internet services providers). The server runs Ubuntu OS. I want to use exactly one of the interfaces only for a virtualbox ...
1
vote
2answers
154 views

Arbitrary loopback ip addresses besides 127.0.0.1

I am developing a web app that has to produce different output based on ip. For testing and during development it would help a lot if I could have more loopback ip addresses besides 127.0.0.1. Is ...
1
vote
1answer
68 views

how to forward proxy requests using iptables

I've this schenario ----------------- ---------------- ---------- | SERVER A | ---(port:2128)> | PROXY | ---> | INTERNET | | (10.30.1.1) | ...
0
votes
1answer
88 views

Cannot close Port 25 after installing postfix

Before installing logwatch (which installs postfix) on Ubuntu 12.04, the port 25 is blocked by iptables/csf PORT STATE SERVICE 25/tcp filtered smtp After installing logwatch (which installs ...
2
votes
1answer
194 views

Ubuntu/KVM Bridge Interface IP Assignment

I have a Ubuntu 12.04 LTS machine running KVM/libvirt. It has two physical ethernet interfaces. I have dedicated eth0 as the primary interface and configured bridging on eth1 for my VMs. The KVM host ...
0
votes
1answer
111 views

Using isc-dhcp-server to allocate addresses from subnet different from server subnet

I'm trying to break my network into different subnets. Server is located into 192.168.15.0/24 subnet. I have the following declaration in my dhcp.conf: subnet 192.168.15.0 netmask 255.255.255.0 ...
-1
votes
2answers
106 views

Simplest way to monitor and log the internet traffic of a ubuntu server [closed]

I'd like to know if there is a simple program for ubuntu server (preferably 12.04), without too much configuration, which will allow me to check what processes are using internet bandwidth, how much ...
0
votes
0answers
101 views

PPTPD server on ubuntu 12.04.1 LTS not giving default gateway or forwarding windows client's packets

I recently bought a VPS, and wanted to set up a VPN with IP forwarding on it, both for resource sharing, and to DDoS protect a company’s windows VPS. I am not very experienced with networking on ...
0
votes
2answers
84 views

Should you use a private hostname or public hostname as server hostname?

Assume you have a web server and database server, the web server is publicly accessible, while the database is only used by the web server, their DNS is web.example.com web-internal.example.com ...
1
vote
1answer
81 views

no internet connection when in private network [closed]

I have an ubuntu server with a public IP, which I can reach with ssh from my local machine. However, when i put this server in a private network, I can no longer reach it with ssh from my local ...
1
vote
1answer
88 views

2 servers with 2 ip adresses cant ping each other

I rent 2 root servers from my provider that run Ubuntu 12.04.01 LTS. I ordered a second ip for each of them and configure them in /etc/network/interfaces as follows: iface eth0:1 inet static ...
3
votes
3answers
411 views

Can't stop DDOS [duplicate]

I need a little help dealing with ddos. I'm experiencing 1gb ddos attack on my server and I don't know how to stop it. (1gbs is the maximum speed of the server.) I've the following iptables rules: ...
0
votes
1answer
187 views

send message to connected computer when IP obtain from DHCP Server

If a computer running Windows gets a IP address from DHCP Server, how could I send a message to that computer. Say DHCP Server running from Ubuntu Server. I am guessing through SMBClient? Or is this ...
1
vote
1answer
63 views

bridging multiple openvpn networks

Is it possible two bridge multiple openvpn networks like following - root | ---------------------------------- S1 C1 C2 ...
2
votes
1answer
84 views

ubuntu linux: network config lost after reboot

I have a linux ubuntu 12.04 machine that was migrated from virtualbox to esxi. I can configure the networking using ifconfig, route add and /etc/resolv.conf and that all works fine. Also I edited the ...
1
vote
2answers
161 views

How to set ip address permanently

This might sound a little strange, but I try to achieve to set up an ip address permanently in Ubuntu using the command line, but not an editor. My idea is to provision servers and just type in the ...
1
vote
1answer
101 views

Access web service from external network

I'm trying to deploy a web service (wsdl) on a machine running Ubuntu 12.04 and access it service via external network, i.e. the internet. At first, I tested with apache2 by starting it and accessing ...
0
votes
1answer
327 views

Setup machines network in Windows Azure

I'm building a web application and I've decided to host it on Windows Azure. My application has three components: A front-end created with Play Framework (machine A) A back-end core written in Java ...
0
votes
2answers
643 views

Bind9 SERVFAIL on Ubuntu 12.04 LTS

I'm trying to setup own dns server inside company, but i can't get it to work. I installed Bind9 on Ubuntu 12.04. I always get status: SERVFAIL, when i try using it. This is sample of one of my tests: ...
2
votes
0answers
214 views

How to preseed options before network in Debian/Ubuntu PXE installation?

I'm trying to fully automate an Ubuntu installation over the network, but the preseed file is loaded only after the network adapter detection. Even with those options in the preseed file the ...
0
votes
0answers
58 views

Apache2 mod_dav_svn SVNListParentPath dependent on cilent IP / subnet?

Hopefully a simple question. Given the following Apache 2.2 VirtualHost configuration on a local network server with access from the local network and the internet: <VirtualHost *:80> ...
1
vote
1answer
274 views

Hyper-V, Linux . Can I install mouse and graphic integration? [closed]

I use windows server 2008r2 with role Hyper-V. The guest system is Ubuntu 12.04 LTC. There is local network between Ubuntu and other machines. EDIT The main problem for me is that my quest OS is ...
0
votes
0answers
78 views

Static Routes for LXC Container

I have set up an LXC Container to have an IP Address from the same Subnet as the Host (i.e. a Bridge Setup) on Ubuntu 12.04LTS. The Host/LXC does not assign any adresses, this is done inside the ...