Networking refers to the technologies and techniques that enable the interconnection of devices and applications allowing them to communicate electronically.

learn more… | top users | synonyms (1)

1
vote
0answers
17 views

MySQL proxy authentication options

I have a farm of production mysql servers that are currently protected by restricted passwords. I would prefer to restrict access to these systems at network level, but have to account for the fact ...
0
votes
1answer
22 views

Infiniband switch, uplink

Regarding switches like Mellanox Voltaire VLT-30011 (QDR IB, managed). I see a gigabit ethernet port on the switch which in the manual ...
1
vote
0answers
21 views

DHCP: bad configuration fixed-address?

My configuration of DHCP is: dns-update-style interim; default-lease-time 86400; max-lease-time 86400; authoritative; log-facility local7; subnet 192.0.1.0 netmask 255.255.255.0 { pool { option ...
-2
votes
0answers
22 views

remote conection via gsm 3g to bar code scanner and a bananaPi or RasPi linux machine [closed]

I'm trying to figure out how to connect a linux SBC to a USB bar code reader for use out in the field.Ideally I'd like the scans to be sent to me and be able to access them on a server while they are ...
0
votes
0answers
22 views

Lags on a specific Windows 10 installation over MS VPN

I have a Windows 10 machine that is connected over MS VPN to a company intranet. All traffic to this company intranet and to the internet go over the VPN. When using remote desktop over the VPN the ...
1
vote
1answer
1k views

FreeBSD Jail own network stack with vimage

I want to throw all services from the host system and put them in jails. Unfortunatly this doesn't work for file sharing (e.g. nfsd) because the jails don't have there own network stack by default. I ...
2
votes
1answer
70 views

Pinging Hostname results in reply from 2 different IP addresses

I have an odd behaviour on my Windows 2008 R2 server, when I ping a hostname of another system, my first reply has a different IP address then the following replies. For example, if I was to ping ...
0
votes
0answers
29 views

Network layout advice needed

I have been doing some research, I keep reading about source guard on Cisco for segregating subnets and only allowing certain ports access to an IP Address range. However, I don't use Cisco switches, ...
2
votes
0answers
36 views

How to use an IPv6 Edge router in an IPv4 network?

Background I have the following set-up: I use 6LOWPAN (IPv6 implementation in IEEE 802.15.4) on my sensor link that have IPv6 addresses (stateless) as aaaa::xx/64 It uses RaspberryPi (RPI) as an ...
-2
votes
1answer
22 views

Need some clarification on a NIC functionality on a Dell Poweredge r610

Quick question. I'm trying to understand the NIC functionality of this server. NIC specs from manual: My question is, do the two broadcom controller chips provide fail-over redundancy? For example, ...
2
votes
0answers
30 views

Ubuntu Network Performance on over 2k connections

I'm using an EC2 c3.8xlarge Ubuntu 14.04 LTS machine with over 3k threads simultaneously downloading web pages one after another. Although this machine should have a 10Gb network performance, I ...
2
votes
1answer
2k views

Accessing Workgroup Shared Folder from Domain

I have a domain and a workgroup. My users are supposed to upload files on regular basis to several shared folders on the workgroup. I have difficulty accessing the workgroup shared folders without ...
1
vote
1answer
116 views

Routed port on BNT 8124 (Blade Networks/IBM switch)

How can I create a routed port on a BNT 8124? I need to create a /30 routed link between the BNT 8124 and a Cisco 4948 I have a port configured with: interface port 22 name "BNT_Routed_Link" exit ...
8
votes
5answers
6k views

Windows Server 2012 R2 performance for Mac OS X Clients (File Services)

I am inheriting a Windows 2012 R2 Server that is experiencing abysmal SMB/CIFS performance for Mac OS X Clients in particular. The server is doing file services and is an Active Directory Domain ...
0
votes
0answers
140 views

AWS + KeepAliveD: Not able to Ping or Telnet Virtual IP from remote hosts

I am setting up KeepaliveD with 2 nodes on AWS by following this article. My Virtual IP gets moved from one node to another in case of fail-over. However, the VIP just cannot be accessed from a remote ...
0
votes
0answers
12 views

Dell R710/C1100 For a Rendering Farm? [closed]

I own a data center in Los Angeles and have an abundance of Dell R710 and C1100's that I have been renting as dedicated servers. I would like to deploy a rendering farm here as well. From what I have ...
4
votes
4answers
4k views

Need help troubleshooting intermittant TCP timeout in HAProxy

I have an application where the client connects to a server via a simple TCP based protocol over TLS/SSL. In development, this has worked great for many months while we were building our application ...
0
votes
2answers
5k views

Bind nic to VM on VMware ESXi 5

I have physical server with 2 Broadcom NIC's. First NIC connected to local network, via this connection we can: Connect to ESXi hypervisor (hypervisor has local ip, e.g. 192.168.1.5) Connect to VM ...
1
vote
2answers
56 views

Azure Virtual Machine can't serve websites

I am unable to get an Azure VM running Windows Server 2012 to serve up the IIS default website from it's public static IP. Created a VM running Win Server 2012 R2 and installed web server role. ...
0
votes
0answers
22 views

IP Address and Dom0 IP Address

What is the difference between normal IP address and Dom0 IP address? As far as I read so far, Dom0 IP is associated with VMs instances but I want to know if it there is a subtle difference here.
0
votes
1answer
47 views

Dumping command output from SSH session to procurve

I am trying to get information from the command "show mac-address" out of a collection of 12 procurve switches in 2 different locations all connected via fiber PTP. I want to import this into SQL for ...
4
votes
1answer
2k views

Ping not working from tap interface attached to bridge interface with ip on same subnet as that of bridge to outside

My requirement is to create a multiple tap interfaces, each with ip address on same subnet. I tried this by creating a bridge br0 (192.168.1.199) ...
-1
votes
0answers
24 views

How to set up a subnetwork of a subnetwork? [closed]

I have a network cable that is plugged into a single computer in office, now we have three. We typically use a network switch to create a network, however, this time it was different as according to ...
3
votes
4answers
153 views

DNS loadbalancing

I have several servers. We want to set up new big service (word 'big' came from my boss). I want to use two Cisco LoadBalancer ACE 4700, but what will it happen if one of ACE is down? So I want to ...
0
votes
1answer
29 views

Intermitent connection issues inside LXC

I am experiencing connection issues inside a LXC that are driving me mad. They are intermitent. They appear during some time, and they suddenly disapear. Scenario A lxc inside a host. Both are ...
0
votes
1answer
30 views

Wifi clients cannot roam between access points

We are setting up an office with a Ubiquiti Unifi Security Gateway and three UAP-AC access points. The controller is running on a local Linux machine. Most of the setup works fine. We are using a ...
2
votes
3answers
3k views

Cannot connect to Openstack Instance via horizon, but SSH works?

I've got an OpenStack deployment running inside a VM for testing purposes. My setup is as follows: Host Ubuntu x64 with Virtualbox -> Guest Ubuntu x64 with OpenStack -> Ubuntu X64 Server Test ...
0
votes
1answer
41 views

First ping (to any destination) fails from switch but not from router

I've got a basic network setup, just doing NAT to a single public address to an internal /24 without any VLAN's or fancy routing. Both my router and switch are running Cisco IOS 12.x. My ...
1
vote
1answer
2k views

Route IP from one vlan to another vlan in the same vrf of the same router

Can you route a IP (/32) from one vlan to another vlan in the same vrf of the same router ? Exemple: example_router#show version Cisco IOS Software, c7600s72033_rp Software ...
0
votes
2answers
308 views

Bind docker container ports only to specific outside server address

This is the first time i address such a network "problem" to solve with docker and i need some inputs. This is my situation: Ubuntu 14.04 running NginX, ufw as firewall and docker containers to ...
-1
votes
0answers
7 views

How can I create separate/isolated regions on a home network? [migrated]

I currently have a flat network at home. My boradband router comes in and is connected to a switch, which supplies the Ethernet drops within the house. I also have a wireless router connected to the ...
0
votes
1answer
16 views

How to let FreeBSD get IP address automatically in VMware?

I use FreeBSD 10.2 VM image in VMware workstation. Although I set bridge mode in VMware: I find the OS can't get an valid IP address: How can I let FreeBSD get IP address automatically in VM?
-1
votes
0answers
33 views

Set default route to virtual ip

I have a Virtual private cloud running on 10.0.0.x. In this network two machines share a virtual ip to provide HA and connection to the internet via aaa.bbb.ccc.164. There configs are: Proxy1: ...
3
votes
1answer
7k views

Unable to see Samba server by netbios name

We have a linux server set up with a number of samba shares on our mixed windows/mac/linux network. The shares are accessible if we go to \\192.168.x.x\share, however we can't access the server by ...
0
votes
1answer
31 views

Network Drives reappearing over and over

At the beginning we use a Startup-scipt to map 3 Network-Drives: M,Q,S using net use. (Unknown, if /persist has been used) Later, the logon script has been removed, the mapping has been relocated to ...
1
vote
0answers
29 views

Is there a single Linux commandline tool that displays network connections AND processes

Bascially, I'm looking for a combination of iftop and nethogs in a single tool. iftop shows information on the network layer: source/destination target and ports, throughput and all that in a nice ...
0
votes
1answer
19 views

CentOS7 Network Bridge Fails on boot until cable unplugged and plugged back in

I have a problem with a brand new CentOS 7 server I am trying to set-up. I have set-up a network bridge as per instructions on the redhat documentation website and it all works great until I reboot. ...
0
votes
1answer
56 views

Can I use same suricata instance for both IDS (for L3,4) and IPS (for L3,L4,L7)?

I have a interface where traffic is flowing from internet to NGINX server to application server. I want to monitor (IDS) the traffic flowing between Internet and NGINX at L3,4 and IPS the traffic ...
0
votes
0answers
19 views

pfSense Killing Uploads to Any Wordpress Site

I am running a pfSense firewall on version 2.2.6. As far as I remember I have had working rules and have not had any issues uploading to my wordpress sites until this last upgrade. If I try to upload ...
7
votes
3answers
7k views

How to test/debug bad network wiring?

I recently bought a place already wired with Cat 5E (8 ports, leading to a central closet). However attempting to get link, nothing works. On closer examination, it was obvious that the ends in the ...
0
votes
0answers
17 views

Amazon EC2 losing connectivity every day

Didn't find anything wrong on logs but my instance remains losing connectivity every day. According to AWS Console it's running fine but can't access through ssh or http. It resolves after rebooting ...
0
votes
1answer
1k views

Access OpenVPN client network from server

I have setup an OpenVPN connection between a Windows 2012 Server and an Debian Linux machine. The windows machine is the server and the linux machine is running openvpn as client. I can ping and ...
0
votes
1answer
73 views

Dnsmasq , redirect all but google.com

My router uses dnsmasq. In my dnsmasq.conf, I write: address=/#/127.0.0.1 in order to resolv any domain to my local server. It works. Now I'd like to make possible to join www.google.com. Any other ...
8
votes
2answers
482 views

VMXNET3 receive buffer sizing and memory usage

Background We had an incident where a Windows failover cluster suffered an interruption. A post-mortem showed that the node was "removed" as described in this article. We've only recently migrated ...
1
vote
2answers
3k views

Apache 500 error with no entries in error.log

This is on a brand new Ubuntu 14.04 Server running a standard WAMP install with Apache DAV_SVN (using LDAP Authentication) added on top of it (mapped to /svn). I was able to get everything working ...
0
votes
1answer
39 views

Windows Server with Router in the same network, How to configure?

I have a network with Router that provide DHCP and DNS services to my network. Also, i have a windows server 2008R2 in the same network. I have +100 computers in the network, some must join the ...
0
votes
1answer
18 views

Multihomed Windows 2008 R2 outgoing connection

I have Windows 2008 R2 Server with several directly connected networks and interface with default route to the Internet. Today I noticed (and then checked with Wireshark), that if I make request to ...
1
vote
3answers
354 views

Scanning network devices by mac address

I work in the security devices industry and most of my work relates to IP cameras. Each camera manufacturer has their own software that scans the network for their cameras and gives details about ...
10
votes
3answers
10k views

iftop - how to generate text file with its output?

iftop is great tool to view almost live bandwidth usage distinguished by source-ip source-port destination-ip destination port. I'm using it to see which client's ip is using most bandwidth. Now I ...
0
votes
0answers
26 views

ubuntu: add 1000 ipv6 addresses on if-up

I'm trying to configure 1,000 IPv6 addresses using if-up.d. However, when the server is rebooted, they aren't configured properly and eth0 isn't up, even though I'm still able to connect to the server ...