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• Tips and Suggestions IP Address Re-Addressing?

  - by RSXAdmin

  Hello serverfault Universe, My ever evolving and expanding local area network is currently using a class-C address. My network consists of multiple subnets depending on site/location. 192.168.1.x is site HQ 192.168.5.x is secondary site 192.168.10.x is so on and so forth. Long story short - I have inherited this network design from the previous admin who has left the company which started off with a dozen people and now has just over 300 full time/part time employees. We do not yet have client VPN access; but we do have site to site VPN setup. My question is, in preparation for outside client access to my network via Cisco ASA, I would like to re-address the HQ site because I understand a 192.168.1.x or 192.168.0.x are not very good choices for a company subnet - it may conflict with a home user's LAN when connecting to my LAN, I believe? Through your experience, does anyone out there have any suggestions and tips on how I can proceed with re-addressing my subnets. If I designed this network I would have gone with a 10.0.0.0 (mask 255.255.255.0) so I am leaning towards changing it to fit. Thank you.

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• Kickstart CentOS 6 prompting for TCP/IP with network set to DHCP

  - by Andy Shinn

  I am trying to stop my kickstart CentOS install prompting me for TCP/IP information. After I click through this prompt (keeping IPv4 and IPv6 to their defaults) the installation continues and completes just fine. Below is my kickstart file: # Andy's super awesome VM kickstart file install url --url=http://mirrors.kernel.org/centos/6/os/x86_64 lang en_US.UTF-8 keyboard us text %include /tmp/network.ks rootpw --iscrypted $6$RA8DyrNTsVJkGIgY$ohZ62HHiOjNnn1yDMZlIu3lQ63D3plGPcbVZtPKE8Oq6Z.IGUgN.kNLkxs/ZymZuluRDWsW2eey5zLOl2G3mp. firewall --service=ssh authconfig --enableshadow --passalgo=sha512 selinux --disabled timezone America/Los_Angeles bootloader --location=mbr --driveorder=vda --append="crashkernel=auto rhgb quiet" # The following is the partition information you requested # Note that any partitions you deleted are not expressed # here so unless you clear all partitions first, this is # not guaranteed to work zerombr clearpart --all --drives=vda --initlabel part /boot --fstype=ext4 --size=500 part pv.253002 --grow --size=1 volgroup vg1 --pesize=4096 pv.253002 logvol / --fstype=ext4 --name=lv_root --vgname=vg1 --grow --size=1024 --maxsize=51200 logvol swap --name=lv_swap --vgname=vg1 --grow --size=4032 --maxsize=4032 repo --name="CentOS" --baseurl=http://mirrors.kernel.org/centos/6/os/x86_64 --cost=100 repo --name="Puppet Labs Products" --baseurl=http://yum.puppetlabs.com/el/6/products/x86_64 repo --name="Puppet Labs Dependencies" --baseurl=http://yum.puppetlabs.com/el/6/dependencies/x86_64 repo --name="EyeFi" --baseurl=http://flexo.eye.fi/6/eye-fi-api %packages @core @server-policy puppet facter %end %pre --erroronfail #!/bin/bash for x in `cat /proc/cmdline`; do case $x in SERVERNAME*) eval $x echo "network --onboot yes --device eth0 --bootproto dhcp --hostname ${SERVERNAME}.eye.fi" /tmp/network.ks ;; esac; done %end %post puppet agent --waitforcert 10 --onetime --no-daemon --pluginsync --server puppet.eye.fi %end reboot My kernel arguments are in this following virt-install command that I use to start the install: virt-install -n zabbix -r 2048 --vcpus=2 -l http://mirrors.kernel.org/centos/6/os/x86_64 --disk /dev/vg_inf1/zabbix --network bridge=br85 --initrd-inject=/home/ashinn/vm_kickstart --extra-args "ks=file:/vm_kickstart SERVERNAME=zabbix" --autostart During the install, I can pull up a console on the second terminal and verify the contents of /tmp/network.ks are: network --onboot=yes --bootproto=dhcp --ipv6=auto --hostname=jenkins2.mydomain.com Why might Anaconda be prompting for the TCP/IP settings when they are already set to DHCP?

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• Cannot connect to a Wifi network chipset AR9287

  - by Fritz

  After updating my newly installed ubuntu 10.10. I can't connect to the wifi network anymore although it is showing it. Tried to install manufacturer driver INF file via ndiswrapper only makes things worst - lost my wifi. Downloaded and installed the compat-wireless driver for the Atheros AR9287. After installing, i got my wifi connection again but after rebooting I can't reconnect again. The Wifi access point is showing 2/5 to 3/5 signal strength. Laptop: Acer Aspire 4741G Wifi Adapter: Atheros AR9287 OS: Ubuntu 10.10 64bit

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• Java Desktop Application For Network users

  - by Motasem Abu Aker

  I'm developing a desktop application using Java. My application will run in a network environment where multiple users will access the same database through the application. There will be basic CRUD opreations (Insert, Update, Delete, & select), which means there will be chances of deadlock, or two users trying to update the same record at same time. I'm using the following Java Swing for Clients (MVC). MySQL Server for database (InnODB). Java Web start. Now, MySQL is centralized on the network, and all of the clients connect to it. The Application for ERP Purpose. I searched the internet to find a very good solution to ensure data integrity & to make sure that when updating one record from one client, other clients are aware of it. I read about Socket-server-client & RESTful web services. I don't want to go web application & don't want to use any extra libraries. So how can I handle this scenario: If User A updates a record: Is there a way to update User B's screen with the new value? If user A starts updating a record, how can I prevent other users from attempting to update the same record?

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• Sending changes to a terrain heightmap over UDP

  - by Floomi

  This is a more conceptual, thinking-out-loud question than a technical one. I have a 3D heightmapped terrain as part of a multiplayer RTS that I would like to terraform over a network. The terraforming will be done by units within the gameworld; the player will paint a "target heightmap" that they'd like the current terrain to resemble and units will deform towards that on their own (a la Perimeter). Given my terrain is 257x257 vertices, the naive approach of sending heights when they change will flood the bandwidth very quickly - updating a quarter of the terrain every second will hit ~66kB/s. This is clearly way too much. My next thought was to move to a brush-based system, where you send e.g. the centre of a circle, its radius, and some function defining the influence of the brush from the centre going outwards. But even with reliable UDP the "start" and "stop" messages could still be delayed. I guess I could compare timestamps and compensate for this, although it'd likely mean that clients would deform verts too much on their local simulations and then have to smooth them back to the correct heights. I could also send absolute vert heights in the "start" and "stop" messages to guarantee correct data on the clients. Alternatively I could treat brushes in a similar way to units, and do the standard position + velocity + client-side prediction jazz on them, with the added stipulation that they deform terrain within a certain radius around them. The server could then intermittently do a pass and send (a subset of) recently updated verts to clients as and when there's bandwidth to spare. Any other suggestions, or indications that I'm on the right (or wrong!) track with any of these ideas would be greatly appreciated.

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• Set up ad hoc wireless connection between Windows Vista and Mac OS X

  - by Skarab

  I have the following problem - Windows Vista does not connect to adhoc wireless network created on my Macbook. I have tried to create secured (with 40 bit key) and unsecured network but Windows Vista still has problems to connect. Windows VISTA informs me -- after 5 minutes of attempts - that setting up the connection -- with my adhoc network -- took too much time. My question: do I need to configure some settings on Vista to connect it to my Macbook? Maybe it is a problem with DHCP? Edited: I have tried the other way: http://superuser.com/questions/202890/set-up-an-adhoc-network-in-windows-vista-to-connect-to-and-share-the-internet-con

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• HTTP Protocal

  I have worked with the HTTP protocal for about ten years now and I have found it to be incredibly usefull for transfering data espicaly for remote systems and regardless of the network enviroment. Prior to the existance of web services, developers use to use HTTP to screen scrap data off of web pages in order to interact with remote systems, and then process the data as they needed. I use to use the HTTPWebRequest and HTTPWebRespones classes in order to screen scrap data from various sites that had information I needed to use if no web service was avalible. This allowed me to call just about any webpage and grab all of the content on the page. Below is piece of a web spider that I build about 5-7 years ago. The spider uses the HTTP protocal to requst webpages and then parse the data that is returned.  At the time of writing the spider I wanted to create a searchable index of sites I frequented. // C# 2.0 Framework// Creating a request for a specfic webpageHttpWebRequest webreq = (HttpWebRequest)WebRequest.Create(_Url); // Storeing the response of the webrequestwebresp = (HttpWebResponse)webreq.GetResponse(); StreamReader loResponseStream = new StreamReader(webresp.GetResponseStream()); _Content = loResponseStream.ReadToEnd(); // Adjust the Encoding of Responsestring charset = "";EncodeString(ref _Content, ref charset);loResponseStream.Close(); //Parse Data from the Respone_Content = _Content.Replace("\n", "");_Head = GetTagByName("Head", _Content);_Title = GetTagByName("title", _Content);_Body = GetTagByName("body", _Content);

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• Class hierarchy problem in this social network model

  - by Gerenuk

  I'm trying to design a class system for a social network data model - basically a link/object system. Now I have roughly the following structure (simplified and only relevant methods shown) class Data: "used to handle the data with mongodb" "can link, unlink data and also return other linked data" "is basically a proxy object that only stores _id and accesses mongodb on requests" "it looks like {_id: ..., _out: [id1, id2,...], _inc: [id3, id4, ...]}" def get_node(self, id) "create a new Data object from the underlying mongodb" "each data object can potentially create a reference object to new mongo data" "this is needed when the data returns the linked objects" class Node: """ this class proxies linking calls to .data it includes additional network logic operations whereas Data only contains a basic database solution """ def __init__(self, data): "the infrastructure realization is stored as composition by an included object data" "Node bascially proxies most calls to the infrastructure object data" def get_node(self, data): "creates a new object of class Object or Link depending on data" class Object(Node): "can have multiple connections to Link" class Link(Node): "has one 'in' and one 'out' connection to an Object" This system is working, however maybe wouldn't work outside Python. Note that after reading links Now I have two questions here: 1) I want to infrastructure of the data storage to be replacable. Earlier I had Data as a superclass of Node so that it provided the neccessary calls. But (without dirty Python tricks) you cannot replace the superclass dynamically. Is using composition therefore recommended? The drawback is that I have to proxy most calls (link, unlink etc). Any thoughts? 2) The class Node contains the common method .get_node which is used to built new Object or Link instances after reading out the data. Some attribute of data decided whether the object which is only stored by id should be instantiated as an Object or Link class. The problem here is that Node needs to know about Object and Link in advance, which seems dodgy. Do you see a different solution? Both Object and Link need to instantiate one of all possible types depending on what the find in their linked data. Are there any other ideas how to implement a flexible Object/Link structure where the underlying database storage is isolated?

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• network manager says "device not managed"

  - by Daniella Glover

  I used to be able to share my network connection by editing the Auto Eth0 to share with other computers in the Ipv4 section and now I upgraded my laptop to 11.10 . Now are there no wired connections in the network manager. When I click my connections applet at the top of the tray it also says wired device not managed! when I type ifconfig -a daniella@daniella-1001HA:~$ ifconfig -a eth0 Link encap:Ethernet HWaddr 90:e6:ba:83:d6:fc UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:45 eth0:avahi Link encap:Ethernet HWaddr 90:e6:ba:83:d6:fc inet addr:169.254.13.40 Bcast:169.254.255.255 Mask:255.255.0.0 UP BROADCAST MULTICAST MTU:1500 Metric:1 Interrupt:45 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) wlan0 Link encap:Ethernet HWaddr 00:25:d3:90:43:41 inet addr:192.168.0.6 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::225:d3ff:fe90:4341/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:12881 errors:0 dropped:0 overruns:0 frame:0 TX packets:12867 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:8851081 (8.8 MB) TX bytes:2343199 (2.3 MB)

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• What does the fan speed sensor really report?

  - by T. Verron

  I have an overheating issue on my netbook (ASUS EeePC 1015PW), which I'm trying to troubleshoot. Using lm-sensors while overheating gave me this output : acpitz-virtual-0 Adapter: Virtual device temp1: +86.0°C (crit = +100.0°C) eeepc-isa-0000 Adapter: ISA adapter fan1: 4089 RPM coretemp-isa-0000 Adapter: ISA adapter Core 0: +82.0°C (crit = +100.0°C) Core 1: +80.0°C (crit = +100.0°C) But I can't hear the fan. So I enabled manual pwm controling and set the fan to full speed, and after a few minutes I got this output : acpitz-virtual-0 Adapter: Virtual device temp1: +65.0°C (crit = +100.0°C) eeepc-isa-0000 Adapter: ISA adapter fan1: 4016 RPM coretemp-isa-0000 Adapter: ISA adapter Core 0: +62.0°C (crit = +100.0°C) Core 1: +58.0°C (crit = +100.0°C) And this time I could hear the fan spinning. So there's quite obviously an issue with either fan control or fan monitoring. Hence the question : what kind of physical information does the fan sensor really report? Thank you PS. I should have added that the computer is a small, hard-to-disassemble netbook, so I can't and don't want to try experiments like "block the fan and see what the sensor reports".

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• Access points fighting for dominance?

  - by Phillip Oldham

  We have a small office with a large number of wireless devices (a mixture of desktop machines, laptops, and wifi-enabled phones) all working from a single Apple Airport Extreme which extends our wired network. I've added another Airport Extreme for resiliency, since we've been seeing a decrease in performance and (as far as I understand) access points can only handle a small number of clients. I set the new AP to extend the current network so that the clients weren't constantly switching between different wireless networks, however as soon as this AP was configured all the wireless devices started seeing network trouble, flicking on and off. I'm assuming that this is because both APs are reasonably strong, and the client can't decide which to use. What is the best route to follow to resolve this? What I'm aiming for is wireless resiliency; preferably having two APs share the network load, or if this isn't an option then having a primary AP with a "fail-over", should the primary go down for any reason.

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• Why is my USB-to-VGA'd monitor working, but not showing in Display Settings?

  - by Strilanc

  I have a USB-to-VGA adapter, which I use to connect a second monitor to my laptop (totaling 3 screens). It worked alright with Vista. I upgraded to Windows 7, and now it no longer works properly (I downloaded the latest drivers just to get it to work on 7). The extra monitor is detected and used to extend the desktop (I can move things onto it, etc), but is not shown within the Control Panel. This is annoying because now I can't changes its resolution, set its logical position to match its physical position, etc. Can I do anything, besides waiting for better drivers? I'm mainly concerned with moving its logical position. (I'd also like to understand how Windows can use a monitor it can't detect. Weird.)

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• In general, do 3rd-party laptop AC adapters / chargers work reliably?

  - by MGOwen

  The AC adapters for my 2 dell laptops wore out very quickly. One supplies power but won't charge the battery (it's about 3 years old, the other is a bit newer). Both have worn through to the shielding around the notebook connector and look like they'll be unusable soon. Checking user reviews of the replacement adapter on Dell's own website, it appears they usually fail this fast. Apparently Dell does this deliberately to make money (their adapters sell for about 10-15 times what they cost to make). Same with replacement batteries. I can see there are plenty of much cheaper ($50 less) compatible AC adapters on eBay. Does anyone have experience with these? Naturally I'm nervous a crappy knock-off could fry my notebook, but has this ever actually happened to anyone recently? Has anyone had a good experience? Can anyone recommend a good online seller (who doesn't charge nonsensical shipping costs to Australia, preferably?)

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• How to use a home network patch panel?

  - by Torben Gundtofte-Bruun

  I'm planning a home network in a house that's not built yet. One recommendation is to add network sockets in various rooms and have them all end in a central place, where it all connects using a network switch. So far so good. Another recommendation says to not connect everything directly to the switch, but to a patch panel which in turn is connected to the switch. I'm unsure why this is good. Is there any practical advantage of using a patch panel if you're not planning to re-wire things very often? How does a patch panel actually work? Let's say it has 24 ports. Does it have another 24 ports on the backside that go to the switch, or what? Wikipedia isn't helpful on this. Clarification: I am planning to run network cables through conduits inside the walls and terminated with network sockets in the wall (as opposed to having just conduits and long regular network cables that have a normal plug in each end). Going by RedGrittyBrick's answer, a patch panel is nearly unavoidable in that case.

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• Problems with microphone and network

  - by AnoonymoouS

  Hello... very good day everybody! I'm having some problems regarding the Ubuntu 12.4.01 LTS. For this reason, cordially i ask everyone's help. Such problems can be summed up in network (01) and audio (02)! 01) I can not set a DSL network settings in the "upper bar" (on side the clock). When i create the connection, the system says that the cables modem are disconnected! I can only use the internet if i set up a connection at terminal through the command "pppoeconf". Follows the print screen of what i mentioned above:. http://i.imgur.com/8nTrF.png Obs.: Note that even after the connection "created", it does not appear there! 02) The sound is reproduced; however, can not be captured! I can not make recordings, obviously i can't use the microphone. I believe that something is giving interference or the settings are wrong! Follows the video of what i mentioned above:. http://dl.dropbox.com/u/41085750/Projeto%20Padr%C3%A3o.mp4 Obs.: I'm listening to music, so that interference errors may appear in the video. By kindness; who can help me... help me! I sought help at various sites and forums but unfortunately, i did not get success. I wait anxiously for a direction. Regards, Anoonymoous.

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• API Class with intensive network requests

  - by Marco Acierno

  I'm working an API which works as "intermediary" between a REST API and the developer. In this way, when the programmer do something like this: User user = client.getUser(nickname); it will execute a network request to download from the service the data about the user and then the programmer can use the data by doing things like user.getLocation(); user.getDisplayName(); and so on. Now there are some methods like getFollowers() which execute another network request and i could do it in two ways: Download all the data in the getUser method (and not only the most important) but in this way the request time could be very long since it should execute the request to various urls Download the data when the user calls the method, it looks like the best way and to improve it i could cache the result so the next call to getFollowers returns immediately with the data already download instead of execute again the request. What is the best way? And i should let methods like getUser and getFollowers stop the code execution until the data is ready or i should implement a callback so when the data is ready the callback gets fired? (this looks like Javascript)

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• Software vs Network Engineer (Salary, Difficulty, Learning, Happiness)

  - by B Z

  What are your thoughts on being a Software Engineer vs a Network Engineer? I've been on the software field for almost 10 years now and although I still have a great deal of fun (and challenges), I am starting to think it could be better on the "other" side. Not to degrade network engineers (i know there are many great ones out there), it seems (in general) their job is easier, the learning curve from average to good is not as steep, job is less stressful and pay is better on average. I think as software developer I could make the switch to networking and still enjoy working with computers and feel productive. I spend an enormous amount of time learning about software, practices, new technologies, new patters, etc...I think I could spend a much smaller amount of time learning about networking and be just as "good". What are your thoughts? EDIT: This is not about making easy money. Networking and Software are closely related, I love computers and programming, but if I can work with both, make more money and have less stress in my life and can spend more time with my family, then I am willing to consider a change and hence I am looking for advice that Do or Don't support this view.

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• System wide Proxy settings when on a windows network with a password

  - by sav

  I'm using Ubuntu on a windows network. I want to connect to the world wide web. I have followed the steps here which I have found very useful. However when I try to ping a website (eg: ping www.wikipedia.org) I get no reply. I can ping local computers on my network, but I need to go through our proxy to get to the world wide web. I can even browse wikipedia using firefox, I just needed to enter the proxy configuration script location and my username and password. I'm quite sure the reason I'm having this trouble is because I havn't entered a username and password. I'm not sure how to do this on a system wide level. ultimately I would like to be able to use package managers like synaptic but first I need them to be able to connect to the internet. EDIT As sugested I created a /etc/apt/apt.conf file like Acquire::http::Proxy "http://chrisav:[email protected]:8080"; Acquire::https::Proxy "https://chrisav:[email protected]:8080"; Acquire::ftp::Proxy "ftp://chrisav:[email protected]:8080"; Acquire::socks::Proxy "socks://chrisav:[email protected]:8080"; However I still cant ping wikipedia when I try installing stuff I get chris@chris-Ubuntu:~$ sudo apt-get install kate Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package kate

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• Does anyone know how to "tcpdump" traffic decrypted by Mallory MITM? [migrated]

  - by chriv

  I'm looking for some help in capturing network traffic that I can analyze in Wireshare (or other tools). The tool I'm using is mallory. If anyone is familiar with mallory, I could use some help. I've got it configured and running correctly, but I don't know how to get the output that I want. The setup is on my private network. I have a VM (running Ubuntu 12.04 - precise) with two NICs: eth0 is on my "real" network eth1 is only on my "fake" network, and is using dnsmasq (for DNS and DHCP for other devices on the "fake" network) Effectively eth0 is the "WAN" on my VM, and eth1 is the "LAN" on my VM. I've setup mallory and iptables to intercept, decrypt, encrypt and rewrite all traffic coming in on destination port 443 on eth1. On the device I want intercepted, I have imported the ca.cer that mallory generated as a trusted root certificate. I need to analyze some strange behavior in the HTTPS stream between the client and server, so that's why mallory is setup in between for this MITM. I would like to take the decrypted HTTPS traffic and dump it to either a logfile or a socket in a format compatible with tcpdump/wireshark (so I can collect it later and analyze it). Running tcpdump on eth1 is too soon (it's encrypted), and running tcpdump on eth2 is too late (it's been re-encrypted). Is there a way to make mallory "tcpdump" the decrypted traffic (in both directions)?

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• Virtual IPv6 Network between VirtualBox VMs

  - by Ben

  I'm trying to create a virtual IPv6 network as a test environment. I have 5 VirtualBox VMs (Ubuntu Server) with network adapters using host-only networking. You can imagine them being connected in series and every machine connects 2 subnets. I want to ping the last machine from the first one: On: 2001:db8:aaaa::100 I want to ping 2001:db8:dddd::101 (Note: there is no cccc network in between) Only static configuration and routes are used: /etc/network/interfaces auto eth0 iface eth0 inet6 static address 2001:db8:aaaa::100 netmask 64 /etc/network/interfaces auto eth0 iface eth0 inet6 static address 2001:db8:aaaa::101 netmask 64 auto eth1 iface eth1 inet6 static address 2001:db8:bbbb::100 netmask 64 up ip -6 route add 2001:db8:dddd::/64 via 2001:db8:bbbb::101 dev eth1 down ip -6 route del 2001:db8:dddd::/64 via 2001:db8:bbbb::101 dev eth1 I thought there might be some automatic route discovery going on. Anyway, ping6 2001:db8:dddd::100 will not work from aaaa::100 When I add the route: ip -6 route add 2001:db8:dddd::/64 via 2001:db8:aaaa::101 it will work. But the next interface in the same network dddd::101 is not reachable. How could that be? There is a machine with an interface bbbb::101 and another dddd::100 and I can ping the latter one, but the machine connected to it, dddd::101 not?? I also have also turned on forwarding. Any ideas?

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• Serializing network messages

  - by mtsvetkov

  I am writing a network wrapper around boost::asio and was wondering what is a good and simple way to serialize my messages. I have a message factory which can take care of dispatching the data to the correct builder, but I want to know if there are any established solutions for getting the binary data on the sender side and consequently passing the data for deserialization on the receiver end. Some options I've explored are: passing a pointer to a char[] to the serialize/deserialize functions (for serialize to write to, and deserialize to read from), but it's difficult to enforce buffer size this way; building on that, I decided to have the serialize function return a boost::asio::mutable_buffer, however ownership of the memory gets blurred between multiple classes, as the network wrapper needs to clean up the memory allocated by the message builder. I have also seen solutions involving streambuf's and stringstream's, but manipulating binary data in terms of its string representation is something I want to avoid. Is there some sort of binary stream I can use instead? What I am looking for is a solution (preferrably using boost libs) that lets the message builder dictate the amount of memory allocated during serialization and what that would look like in terms of passing the data around between the wrapper and message factory/message builders. PS. Messages contain almost exclusively built-in types and PODs and form a shallow but wide hierarchy for the sake of going through a factory. Note: a link to examples of using boost::serialization for something like this would be appreciated as I'm having difficulties figuring out the relation between it and buffers.

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• Unable to view 2 local sites over network

  - by gentrobot

  I have 2 websites running on my local machine that I'd like to view from other machines on the same network. For /etc/apache2/sites-available/site1.com: <VirtualHost *:80> ServerName site1.com DocumentRoot /var/www/answers/app/webroot DirectoryIndex index.php <Directory "/var/www/answers/app/webroot"> Options FollowSymLinks AllowOverride All Order allow,deny Allow from all </Directory> </VirtualHost> For /etc/apache2/sites-available/site1.com: <VirtualHost *:80> ServerName site2.com DocumentRoot /var/www/answers2/app/webroot DirectoryIndex index.php <Directory "/var/www/answers2/app/webroot"> Options FollowSymLinks AllowOverride All Order allow,deny Allow from all </Directory> </VirtualHost> I have added 2 entries in the /etc/hosts file as: 127.0.0.1 site1.com 127.0.0.1 site2.com Now, when I point the browser on my machine to site1.com, it shows me the first site and pointing the browser to site2.com, it shows me the second site. However,when I type in the local IP of my machine in the browser, it always shows site2. How can I change it to switch between site1 and site2 ? Is there a way that I can view both the sites form another machine (esp. mobile devices over wireless network) ?

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• Help me convert my gaming headset plugs (mic & stereo sound) to a single 2.5mm monaural plug

  - by Flotsam N. Jetsam

  I have a seldom used piece of computer hardware I'd like to connect a gaming headset to. The headset has two 3.5mm plugs (mic and sound) like this: The jack I need to plug into is a 2.5mm monaural (don't ask me why--I know it sounds goofy but it's for someone else who's very picky). I googled a few different ways but I could only find splitters such as this for going from 2 x 3.5mm to 1 3.5mm. If I could find one that could combine it properly to 1 3.5mm, I could then find a 3.5mm to 2.5mm adapter. I know I could probably vivisect and work something out, but I need it to be very clean. Any ideas?

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• Linux will not activate wireless after device has been re-enabled

  - by XHR

  Using a Eee 900A netbook by Asus. By pressing Fn + F2, I can disable or enable the wireless chip on the netbook, a blue LED indicates the status. I've been able to connect to wireless networks just fine with this netbook. However, if the wireless chip ever becomes disabled, I have to reboot to get my network connection back. This generally happens when suspending. For some reason the LED will be off and I have to hit Fn + F2 for it to light up again. However, after doing so, Linux will not reconnect to the network. It simply changes the wireless status from "wireless is disabled" to "device not ready". Even worse, I've recently had issues with the chip being enabled at boot, thus making it nearly impossible to get connected. I've searched around on-line but haven't found much of anything useful on this. This happens on all kinds of different distros including Ubuntu 9.10 Netbook, EeeBuntu 4 beta, Jolicloud and Ubuntu 10.04 Netbook. Edit I noticed this question is getting a lot of views. To give a quick update, I never did resolve this issue with the given distro's. However, I'm currently running Ubuntu 10.10 netbook edition and this issue has gone away.

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• D-Link DWA-125 Wireless network card not working after upgrade from 10.04 to 12.04

  - by dava2788

  I upgraded to Ubuntu 12.04 and now the wireless network card D-Link DWA-125 doesn't work. I have the drivers from the official website, But neither recognized during installation. iwconfig: lo no wireless extensions. vmnet8 no wireless extensions. ra0 Ralink STA Link Quality:0 Signal level:0 Noise level:0 Rx invalid nwid:0 invalid crypt:0 invalid misc:0 eth0 no wireless extensions. vmnet1 no wireless extensions. dava@Dava-Ubuntu:~$ lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 006: ID 07d1:3c0d D-Link System DWA-125 Wireless N 150 Adapter(rev.A1) [Ralink RT3070] And the chipset: ralink 2870/3070 (rt3070)

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