1
vote
0answers
42 views

Redundant Debian Gateway

I have to configure a redundant gateway with Debian boxes and I would like to get some recommendation what's the best solution in my case. There are certain limitations in my setup and I have to go ...
0
votes
0answers
22 views

Debian VM, two nics, can't ping Google.com [migrated]

I have a Debian based virtual machine running on VMWare Fusion with a OS X 10.9 host OS. In VMWare Fusion I have a private network setup that allows the Mac and the VM to communicate without access ...
0
votes
0answers
21 views

AR8151 eth0 heavy trouble

First I had really bad issue with network speed. There I got this good article: http://mindmapapp.blogspot.com/2012/01/use-atheros-ar8151-ethernet-card-on.html But now I have really crazy things ...
2
votes
1answer
83 views

Adding second IP to server

I have a Debian 7 box that will host multiple domains. I'm trying to add a second IP, but every time I try /etc/init.d/network stop && /etc/init.d/network start, I get this error: RTNETLINK ...
-5
votes
1answer
35 views

How to route to next server? [closed]

I must route all traffic from first server to second server and next to third server. Like this: server1 -> server2 -> server3 I use Debian Wheezy. Can anyone tell how to do this with iproute?
2
votes
0answers
38 views

Debian, IPv6 is not asssigned to interface

I have a Debian 7 Server with several networks and KVM VMs running configured: 2a01:4f8:191:439b::/64 144.72.132.208/29 The IPv6 Subnet is splitted into /96 Networks to assign each bridge a own ...
0
votes
1answer
47 views

Network dropouts on Debian 5, how to find a cause

It is a tower server machine located in datacenter. I have complete access to the machine. I'm experiencing short dropouts, usually under 10 minutes a couple times a week or so. Unfortunately, last ...
0
votes
0answers
90 views

debian multiple network interface multiple networks

I have a virtual environment with 3 virtual machines on one host. One of my virtual machines has 2 network interface. I need the virtual machine with two interfaces to connect to two different ...
1
vote
0answers
151 views

XenServer IP Failover OVH not working

I have got problem on XenServer with IP FailOver in OVH. I did everything what is in this official tutorial http://help.ovh.co.uk/BridgeClient and IP not working. On my VM is Debian 7 64bit I set MAC ...
0
votes
2answers
64 views

How to setup an automatic failover firewall?

We have an intern network of servers. In this intern network only one server has access to the internet and serves as route/firewall so that other server have also access to internet. Now we want to ...
0
votes
1answer
27 views

FastCGI protocol over the network

For a reason that is beyond my control, there is a web server (fairly standard Debian/Apache deployment) sitting on our NAT'd network which takes all traffic to ports 80 and 443. I can't change that. ...
-1
votes
1answer
60 views

Networking service not responding [closed]

Networking is going down on some of our machines. This is happening very randomly. Restarting networking is fixing the issue. I found the following in the kernel logs: Mar 19 18:19:05 <host> ...
0
votes
1answer
47 views

Blocking incoming traffic for interface

I have created an interface eth0:2 and I want to make curl requests from that interface only so I want to block all ports and incoming traffic on that interface. This iptables rule used to work, but ...
0
votes
4answers
117 views

Server with 3 network cards

Totaly edited: I have 3 nic with links eth0 eth1 eth2. I made 3 table T1 T2 T3. In /etc/network/interfaces i wrote: auto eth0 iface eth0 inet static address 1.0.0.1 netmask ...
-2
votes
2answers
55 views

How to block access to a local user to a local port?

How to block access to a local user to a local port? Example: user Elvis should not have access to the port 25600 on the same server.
7
votes
2answers
245 views

Why would a server lockup knock other servers off the network?

We have a couple dozen Proxmox servers (Proxmox runs on Debian), and about once a month, one of them will have a kernel panic and lock up. The worst part about these lock ups is that when it's a ...
0
votes
0answers
162 views

Debian 7 + Hyper-V and random network/DNS problems

Our department is *nix-based exclusively but unfortunately the company we're part of runs on a Windows environment and until I get budget for our own servers I have to run our servers on a Hyper-V ...
2
votes
1answer
122 views

Why is debian ignoring my static configuration in /etc/network/interfaces?

I'm trying to setup a Debian VM to have a static network configuration. I have the following in /etc/network/interfaces: auto lo iface lo inet loopback auto eth0 iface eth0 inet static address ...
0
votes
1answer
155 views

Squid loads some website very slow

I installed a couple of weeks ago squid on my network and first it was making websites load very slow with the default configuration but after a few changes in the squid.conf (copied from a different ...
0
votes
0answers
248 views

Creating a multi-wan/isp failover router where wan IPs are dynamic on Debian

I'm having an incredibly hard time creating a basic router on Debian which has connections to two ISPs where the ip addresses are dynamic. I don't need bonding, I really just need some way to detect ...
0
votes
1answer
335 views

Redirect some specific traffic to a different gateway

I have two gateways with different ISP, one of them defined as default for the LAN user and the other ISP used as the default for the Servers and VPN traffic. This is done using regular routing tables ...
1
vote
1answer
531 views

Unable to make work both private and public ip network on openvz container in Proxmox

I'm using Proxmox 3, it is a fresh installation. For those who know, I'm using OVH Vrack 1.5 (along with a previous Vrack 1.0). My server has two interface eth0 and eth1, I succeeded to configure ...
0
votes
0answers
91 views

Networking issues KVM

I have a server that is running Debian 7.2. I recently set up KVM on it, and created two VMs. Both VMs are unable to connect to the Internet. I was following a tutorial, and I'm certain I followed the ...
0
votes
2answers
141 views

squid specify outgoing network interface

I have a Linux Debian machine with many network interfaces (venet0:1 to venet0:5) running Squid. If I connect to interface venet0:2 squid uses venet0:0 for outgoing traffic but I want Squid to use the ...
0
votes
2answers
52 views

Map subdomains to local IP address AND being reachable from the Internet

I would like to do a mapping between subdomains and my VMs local IP addresses. Something that looks like this schema I've set up my DNS directly on my server (myserver.com for the example) and I ...
0
votes
0answers
46 views

Preventing SSH to use VPN

I use a VPN service on my Debian server which I connect to remotely using SSH. The problem I'm facing is that when I connect to the VPN on the server I get disconnected from SSH since the server's IP ...
-4
votes
2answers
106 views

Run a script.sh with www-data like it was root user [duplicate]

I need to get all mac Addresses from my network-card. So i use nmap from Debian, combined with PHP. But, without root privilege, this only gives me the IP address and status from a target. With root ...
0
votes
1answer
57 views

nmap shows services I'm unaware of

When I run nmap <host> on my server it says the following ports are open, but my iptables have no rules explicitly allowing them. 135/tcp filtered msrpc 139/tcp filtered netbios-ssn 445/tcp ...
1
vote
1answer
91 views

copy ipv4 rules to ip6tables

I have a static IPv4 and a static IPv6 address. Right now, my iptables look like: *filter :INPUT DROP [28:2168] :FORWARD DROP [0:0] :OUTPUT ACCEPT [551:134808] -A INPUT -i lo -j ACCEPT -A INPUT -i ...
0
votes
2answers
478 views

Linux: Using bonding to connect two servers for faster file transfer

My setup is two Dell R720 servers which are connected over 4 gigbit ports each to a Cisco WS-C2960S-24TS-L switch which in turn is connected to the Internet via 100MBit. The servers are running ...
1
vote
1answer
345 views

Assigning IPs to OpenVZ containers

I have recently bought myself a physical server and I am trying to create containers which would have their IPs. The physical machine has both IPv4 and IPv6 addresses. I have accessible another IPv4 ...
0
votes
1answer
833 views

ifdown interface not configured (Debian 6) [duplicate]

My server is dedicated (non-virtual). I want to have 3+1 static IPs. I used aliases (eth0:0, eth0:1) previously, but read that this method is deprecated. So I added another IP and reconfigured my ...
0
votes
1answer
113 views

Unable to set initcwnd on a Hetzner server

We just ordered a bunch of Hetzner EX40SSD servers with the minimal Debian install image that they provide and everything is just fine except that looking at tcpdumps for fine tuning the network from ...
0
votes
0answers
140 views

KVM - 2 external IPs - NAT - forwarding multiple ports to multiple VMs

I have a server with one network device and two external IP addresses. This server is running Debian 7. On this server I want to run two or three virtual machines using kvm/qemu. I want to use both ...
0
votes
2answers
195 views

Setting Up Xen and Network Bridge on Debian 7

Setting up Xen and Network Bridges on Debian 7 Hi there. So i am finally going to try out some virtualisation on my new dedicated machine, however i am having some problems / confusion on setting it ...
1
vote
1answer
75 views

Debian network monitoring like tkinet

in earlier Debian versions there was a network monitoring tool called tkinet. It did create a network map and it pinged continuously configured resources. When something did not work, the resource in ...
0
votes
1answer
151 views

Setting the default network interface

My /etc/network/interfaces looks like this: auto lo iface lo inet loopback auto eth1 iface eth1 inet static address 10.0.0.99 netmask 255.255.255.0 gateway 10.0.0.1 auto eth0 ...
1
vote
1answer
199 views

KVM bridge network initial setup - 2 public IPs

I have actually two problems with my server. The setup is like this: server in a data center connected directly to the internet one network card / two public IPs (one IP the server gets over DHCP, ...
0
votes
0answers
316 views

openvpn to share internet connection: client side (kubuntu) configuration

Server Debian 7.0 Client Kubuntu 12.10 Followed debian wiki about OpenVPN with success until TLS-enabled VPN section. Now from client I want to have internet thru vpn. For that I opened KDE ...
1
vote
1answer
166 views

Configuring Debian as a gateway for two networks

Having a debian server with multiple NICs (eth0 and eth1) acting as a gateway. How would I be able to configure these NICs, so they can route the traffic from one to another. Network layout: ...
0
votes
1answer
373 views

Xen dom0 not forwarding to domU over bridge

My setup is about as basic as you can get. I have 2 interfaces on dom0 (Debian Squeeze), eth0 and eth1. I created a bridge for eth1 to forward packets to domU that has a public IP address. I can ...
0
votes
2answers
129 views

Connect Debian server to a VPN server and still provide services to the internet

There is one server in the local network (running Debian 7) and one remote VPN server. I have no control over the remote VPN server. I need the server in the local network to provide services ...
0
votes
1answer
190 views

Issue with ifconfig in a shell script (using cron)

If I execute this script manually in Debian: #!/bin/bash /sbin/ifconfig wlan0 down /sbin/ifconfig wlan0 up sudo iwconfig wlan0 essid "WLAN_NETWORK" sudo iwconfig wlan0 key myPassword sudo dhclient ...
0
votes
1answer
79 views

Troubleshoot networking: two hosts in subnet can't communicate, other hosts work fine

I am handling 34 Debian servers. Two of these are diskful machines (which boot from their HDs), the remaining 32 are PXE clients without disks. The two machines with disks are called uni01 and uni02. ...
1
vote
1answer
289 views

xen + debian network after upgrade squeeze to wheeze

I've got a Debian + Xen server. After a system upgrade to the stable version the network doesn't come up after boot. Every time after reboot I need to bring it up manually. The network configuration ...
5
votes
1answer
347 views

100% packets dropped on first RX queue on 3/5 raid6 iSCSI NAS devices using intel igb (resolved)

Edit : The issue is resolved. The Queues in question have been used for Flow Control Packets. Why the igb driver propagated FC packets up to have them dropped (and counted) is another question. But ...
3
votes
2answers
1k views

Debian 'ignores' /etc/network/if-pre-up.d/iptables

I want my iptables rules to automatically be loaded on startup. According to the wiki on Debian this can be done by placing a script with the name iptables in /etc/network/if-pre-up.d/ So I did, this ...
0
votes
1answer
57 views

Routing 4 Networks

I've been trying for almost a week to make it work but without success. I start to be hopeless. I have 4 ethernet adapters : 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN ...
0
votes
1answer
94 views

Unable to ping gateway from network

I got the following route table : #!/bin/bash IP=/sbin/ip # SST echo "SST: Setting up SST network ..." $IP route flush table 10 $IP route add table 10 to 10.45.13.0/26 dev eth0 $IP route add table ...
0
votes
0answers
43 views

Samba WINS server with two networks

How can you confirm if SAMBA is really setup as a WINS server ? How can you tell SAMBA to have two differents WINS server. My debian server has two networks (eth1 (10.45.13.0), eth2 (10.45.15.0)). I ...