Questions tagged [networking]
Networking refers to the technologies and techniques that enable the interconnection of devices and applications allowing them to communicate electronically.
15,676
questions
3
votes
2
answers
5k
views
how to disable auto-connect in network manager in ubuntu
hello there are some laptops running ubuntu 8.1 with NetworkManager, which on startup automatically connects to the strongest wireless network. i need to disable this for security reasons, so a ...
David Chang
2
votes
3
answers
2k
views
Gigabit Teaming or Bonding
I'm using dell 2950 server with RHEL 5.3 with XEN kernel default i need to do bonding of my 2 giga nic which i'm using one of the script for that as follow:
ifcfg-bond0
DEVICE=bond0
BOOTPROTO=none
...
- 3,349
2
votes
1
answer
12k
views
Configuring VLAN's on two HP procurve switches
Trying to route a new ISP (Microwave link) from one of my out buildings to my computer room and hence my firewall. Old ISP came direct into firewall. In the outbuilding the Microwave modem connects ...
pan
1
vote
4
answers
311
views
Network Copying Query
I have a Windows 2003 SBS server running on a DL380 with 2 LAN cards as follows:
192.168.2.2 = LAN 100mb / 192.168.10.1 = copy subnet 1000mb
I have a Windows 2008 standard server running on another ...
- 159
0
votes
1
answer
4k
views
How to Monitor Windows Hosts Network Bandwidth through SNMP?
I need to monitor Linux and Windows hosts with SNMP and Cacti. I am looking for results in a graph format like MRTG.
I'm looking for the following on the Windows Hosts:
Disk Utilization, CPU load, ...
- 79
0
votes
2
answers
519
views
EXCEPTed services in /etc/hosts.allow
Say /etc/hosts.allow contains this:
ALL EXCEPT in.telnetd : foo.example.com
Someone is telling me that if foo.example.com attempts to telnet into this system, the connection will be denied because ...
- 11
0
votes
6
answers
23k
views
How to setup IP range given by ISP?
At work our ISP has given us a block of IPs and I was wondering how I go about mapping them. Currently out setup is that the ISPs fiber goes into out router which is then routed throughout the office....
- 375
0
votes
2
answers
874
views
Using WINS forwarding with DNS across two subnets?
I have two suubnets... All of the workstations on these subnets point to one Windows Server 2003 DNS. Windows Server 2003 supports forwarding unknown DNS requests to a WINS server. If I setup a WINS ...
- 189
4
votes
2
answers
9k
views
Trouble with Netbios over two subnets, can this be resolved with a domain controller?
I'm working on upgrading the network at my office... Right now we have two subnets, one for our workstations (on a wireless network) and one for our servers (mapped to static IP addresses).
We're ...
- 189
2
votes
3
answers
25k
views
Remote Desktop Disconnected Error trying to connect to a Windows XP computer
I've run into a problem connecting to my remote computer via Remote Desktop. I think it is a network configuration problem but am not sure what to check (or more appropriately, have the system guys ...
- 396
69
votes
6
answers
109k
views
What is the difference between a managed and unmanaged switch?
I've seen some documentation discussing the use of an unmanaged switch. What is the difference in functionality/performance/etc. between an unmanaged and managed switch?
- 2,123
15
votes
6
answers
143k
views
Ping returns an IPv6 address
I have 3 servers, a DC an exchange server and an apps server.
If I ping the DC from any server or ping any server from the DC I get an IPv4 response, as you would expect, however if I ping exchange ...
- 39k
5
votes
6
answers
367
views
Making hosted applications resilient to BGP failures
My company builds various web sites for its customers with a dedicated hosting provider.
This hosting provider accidentally shutdown the devices responsible for Border Gateway Protocol (BGP) ...
- 335
3
votes
3
answers
3k
views
Forwarding HTTP requests to VMs behind a virtual network
I'm trying to set up a virtual machine host (currently running ubuntu + KVM) which will host a number of VMs for different applications. For example, we have a wiki running on one VM and a web ...
- 131
12
votes
7
answers
15k
views
How to disable responses to PING [closed]
I feel like this should be a really simple thing to do, but googling and checking SF I didn't see anything. I'm trying to make my Fedora server not respond to pings, how do I do that?
- 385
1
vote
3
answers
4k
views
Configuring subnet access on a Cisco 2960
Greetings,
I want to configure a 24-port Cisco Catalyist 2960 to perform as follows:
Four ports going to a SAN
Four ports going to four ESX servers for iSCSI storage traffic
Four ports going to the ...
- 1,127
26
votes
7
answers
3k
views
Puppet Security and Network Topologies
Background:
I am finally setting aside some time to join the 21st Century and look at Puppet.
As it stands today we version control all server configurations in a repository that is held internally ...
- 25.8k
2
votes
4
answers
3k
views
Is there a tool to log internet connectivity on a mac?
My mac runs as a server with an dyndns ip. To work properly, it must be connected to the internet all the time. but unfortunately it seems that it is not connected a lot of times during the day. So I ...
- 21
0
votes
4
answers
889
views
This is regarding Static routes
Hi everyone I am new to this site. I have a situation at my office please guide me if any know about this
I have two connections
One is for Internet which gives ip address Dynamically
and the other ...
Pala kiran kanth
0
votes
3
answers
4k
views
Create a private network between virtual machines running in multiple hosts using Virtualbox
I want to create a private network between virtual machines running in multiple hosts using Virtualbox. Linux will be used as guest operating system, and Windows in the hosts.
How do I set this up ...
- 185
0
votes
2
answers
943
views
Best way to resolve locally-hosted server's IP addresses?
I'm planning to upgrade our office network architecture this week and have run into a slight issue.
Right now we have a few servers that are accessible internally and externally, we'll call them ...
1
vote
2
answers
25k
views
How to properly setup a server "teaming" across multiple NIC's in windows server 2008?
Ok, I have read about installing multiple nic's in a server and expanding the throughput capabilities through load balancing. I might be using this term incorrectly. Now, depending on the application, ...
- 1,345
5
votes
3
answers
837
views
fiber to the desktop - which connector
in putting together a new installation, one of the requirements is that we use fiber to the desktop. we are going to use multimode, but im not sure which connector.
is there a material (ie cost) ...
- 951
1
vote
5
answers
1k
views
Slow internet bandwidth on Network
I know this looks like some of the other questions but they don't seem to have been answered as fully as I hoped.
On our network we have a bunch of PC's that are connected to the internet. Now for ...
- 51
2
votes
3
answers
5k
views
Connecting two Cisco 2960 switches
We have two Cisco 2960 switches that we need to be able to connect together.
We have four links joining SwitchA to SwitchB, I'd like to know the best way of configuring the switches so these four ...
- 1,127
1
vote
5
answers
5k
views
Can't see other network interface in Debian Etch
I know there are two physical network interfaces in our server (haven't seen it live, but person from datacenter confirmed two ethernet sockets). Problem is, I can only see one via ifconfig -a.
At ...
- 2,749
1
vote
3
answers
11k
views
OpenVPN and UDP broadcasts
How can I get this to work?
Hours of configuring - and no result.
Is that possible at all?
P.S. UDP broadcasts are needed by old games for LAN play.
Mad Fish
3
votes
6
answers
5k
views
How to access a webserver on external network from local network?
I'm trying to make it possible to access a webserver on another network (A) from my local network (C).
They have a router on our end which I cannot access directly to make any changes, If I connect ...
- 397
1
vote
2
answers
1k
views
Can't connect to MSSQL Server 2000 with "IP Address" but works with server "hostname"
this happens after applying the SP3 on MSSQL Server 2000, I just can connect with SA login or DOMAIN\Administrators (built in) users, How can I reenable the Integrated Security connection?
Hey Hey... ...
2
votes
4
answers
7k
views
Sending all traffic through a tunnel
I have set up a IPIP tunnel between my workstation and my server. I can add routes manually to have traffic going through the tunnel like this:
ip route ad 216.221.35.27 dev foo
I'm not sure however ...
- 31
1
vote
3
answers
4k
views
TightVNC Server seems to ignore settings without a user logged in to server locally
I have been fighting a VNC configuration issue for sometime now. Even with the additional recent assistance of a friend/guru more skilled than I, the issue continued to elude me:
Running a TightVNC ...
- 445
2
votes
3
answers
6k
views
Linux network configuration GUI frontend
I know that this is not how a true admin would do it, but this is for a small home network and for a person who's not very comfortable with the command line iptables configuration.
There's a small ...
- 267
1
vote
7
answers
495
views
DNS - Using My Own Domain Name
I know you can use something like http://www.dyndns.com/ to point
ReallyCoolName.dyndns.com to 74.125.127.100 which is google.com
How would you go about pointing
ReallyCoolName.com to 74.125.127.100 ...
- 601
1
vote
3
answers
649
views
VPN Windows 2008 Server
I am trying to setup VPN between two "Windows 2008 Datacenter Edition" servers reciding in two different datacenters.
I did do the setup outlined in help files, but I am sure I missed somewhere how ...
- 467
2
votes
1
answer
1k
views
Debugging network traffic on local Windows machine
A customer running Windows is having issues with two server components that communicate with each other using TCP. Normally the two components live on two separate server, so Wireshark lets me easily ...
- 407
2
votes
2
answers
7k
views
The PID and name of the program to which socket belongs
Using 'netstat -tulp' on my server box running under CentOS I have discovered strange listening ports 33363 (TCP) and 35661 (UDP). The thing is that 'PID/Program name' field for these ports contains ...
- 63
2
votes
1
answer
5k
views
Managing network interfaces on RHEL/CentOS with GUI + scripting (system-config-network)
We have two load balanced CentOS 5.3 webservers that handle a decent number (~20) of individualized shopping websites. The end result being that we have to have a separate secure site per product, ...
- 3,547
2
votes
2
answers
174
views
Windows takes long to access other PCs over network
why does windows (from xp to 7) take so long to access other machines over network?
In detail: if I do Start -> run -> \machineinLocalNet\c$ oder \machineinLocalNet\share it always takes long to ...
- 1,835
1
vote
2
answers
2k
views
Link Aggregation between Xserve G4 running Leopard Server and Netgear GSM7224
I've got a dual 1.33GHz G4 Xserve running Mac OS X 10.5.2 Server (I'll try upgrading to 10.5.7 shortly) with two Gigabit Ethernet NICs that is a backup storage server. I attempted to configure it for ...
- 1,470
4
votes
11
answers
3k
views
Open Source Linux network analyzer
Open Source Linux network analyzer
Which are there? What features do they offer?
- 750
2
votes
1
answer
21k
views
Route add error - parameter is incorrect
I'm trying to figure out how to add a network route, and I keep getting "The route addition failed: The parameter is incorrect." I have even tried the example from the route command help, and I get ...
- 151
4
votes
4
answers
4k
views
Kill an SSH tunnel after X minutes even if it's still being used?
I'm setting up some background SSH tunnel for some backup procedures. However I'm worried the ssh process just sitting around. At the end of my script I kill the PID, but what if something happens to ...
- 32.3k
3
votes
4
answers
10k
views
How serious is a problem is multi-homed networks?
Multi-homed is the term that I have heard for being connected to a LAN at the same time as being connected to the internet via something like a wireless connection.
I have heard that this is so ...
- 2,186
2
votes
1
answer
388
views
Does Hyper-V Handle Network Traffic Efficiently Between VMs?
If I have network traffic between two VMs on the same Hyper-V host does the traffic actually ever leave the host server? How can I tell?
- 1,301
7
votes
4
answers
2k
views
How do you document your Cisco configurations?
How do you document your Cisco configurations?
How much / what kind of information do you include in the description field (connects to, circuit ID, device information, etc.)?
Do you use any ...
- 5,473
1
vote
2
answers
2k
views
How To Limit Svn Access to VPN Users
We have a collection of subversion repositories on our server and want to get a VPN up and running so we can access them off site.
However, my boss insists that a select few repositories are not ...
- 199
1
vote
5
answers
7k
views
Gigabit not working with Hyper-V VMs (?)
So we got a shiny new 48-port switch that supports Gigabit. Between two computers, with CAT5e cables I get 20-35 MB/s, which I guess could be improved even more with CAT6 cables. But for some reason, ...
- 599
0
votes
2
answers
11k
views
TCP/IP packet loss network testing (in context of PingPlotter)
My question may be pretty basic TCP/IP / router based, but I need to couch it in terms of a Winpcap application pingplotter that I have used.
One of the features I did use in my last place of work ...
- 103
3
votes
4
answers
2k
views
Cheapest gigabit managed switch with telnet capability [closed]
I'm looking for a cheap gigabit managed switch that can be controlled with telnet so I can do some scripting.
The number of ports is of little consequence to me and I was wondering if anyone had any ...
- 1,621
3
votes
4
answers
2k
views
What is this address "223.1.1.128" that ZoneAlarm blocks?
ZoneAlarm (firewall) reports blocking this address about once a day. 223.1.1.128 doesn't resolve to anything, so I tried a Web search on the number. I kept getting this site with a hyphen in its name....
- 615