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• How to prepare and secure a Macbook Pro for work/office?

  - by sunpech

  I plan to use my Macbook Pro at work/office. Before I do so, I will need to speak to my manager on how to properly prepare and secure it since this is the first Mac that will be regularly used on the network in the office and company intranet. The intranet comprises mostly of PCs running Microsoft Windows XP, Server 2003, and Windows 7. So there's definitely a Microsoft-only culture in the office, and the infrastructure/networking team are mostly unfamiliar with non-Microsoft technology and software. What steps and software would I need to prepare and secure my Macbook Pro for work/office? Antivirus/Spyware software for Mac required/necessary? What options do I have to encrypt files, or possibly the whole drive/partition? What network/firewall settings should be enabled?

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• Setting a Static IP Running FreeBSD8 in VirtualBox hosted on Windows 7

  - by gvkv

  I'm using VirtualBox on Windows 7 (host) to run a FreeBSD (guest) based web server. I`ve assigned a static ip of 192.168.80. 1 to the (virtualized) NIC which is run in bridged mode. The problem is that when I ping an external server (such as google.com) I get a No route to host error: dimetro# ping google.com PING google.com (66.249.90.104): 56 data bytes ping: sendto: No route to host ... I can ping the BSD server from both another virtualized machine and my host machine and from the server, I can ping everything on the network. The router ip is 192.168.1.1/16. ADDENDUM: I have the following lines in /etc/rc.conf on the BSD VM to configure networking: defaultrouter="192.168.1.1" ifconfig_em0="inet 192.168.80.1 netmask 255.255.0.0"

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• Survey of project-administration experience [on hold]

  - by Salvador Beltrán

  My name is Salvador, I'm a Computer System Eng. Student and I'm searching for people to contribute with my research and I need real opinions - Experience (is an investigation for problems in the Project Management Area), just to be clear it can be any kind of project. If you help me with these 3 questions I would appreciate you so much! :) 1 - Any kind of problem that ocurred during the process of the project administration(Just the description). 2 - What was the impact? 3 - And what was the solution to avoid this problem in some future. 4 - What do you do(Software Engineering,Networking,etc). Thank you very much!

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• What should be taken into consideration when deploying Windows 8 in a domain environment?

  - by GaTechThomas

  Edit: Reformulating the question: We have ordered new laptops but before they arrive, our development team is trying to decide whether to install Windows 8 or stick with Windows 7. We have already tested on isolated machines, but we have not yet been allowed to add the machines to the domain. Before we approach the networking group to discuss adding Windows 8 machines to the domain, we need more information on what changes / issues to expect in moving from Windows 7. Are there any aspects we should consider that are specific to Windows 8 clients? Thus far, I've gotten the following feedback: Windows Administrative Shares are disabled New set of Group Policy templates Changes to proxy server settings Additional items along these lines would be helpful. We're not looking for items related to Windows GUI changes, but instead primarily items related to having the machine live and be used on the domain.

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• Ultra Low Latency Linux Distribution or Kernel

  - by Zanler

  I'd like to know if there are any linux distributions that are focused on low latency networking. The area I'm working in is algorithmic trading, and extremely low latency comms between machines is a must. The current h/w we're using is 10g ethernet, we're looking into things like infiniband RDMA and Voltaire VMA I've googled around, and have only been able to find tidbtits of kernel patches, command line options and hardware suggestions. I'm looking for a complete solution, specially built kernel, kernel bypass features, essentially all the goodies rolled up into one package - does such a thing even exist? I ask as a lot of this stuff seems to be a black art, people keep secret what they know works etc.

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• Yet another "can't connect to MySQL over the network" question - but i seriously tried everything

  - by mireille raad

  Hello, I was left with the easy task of installing moodle. I am VPNing to 2 servers, one for the database and the other apache/php server 1 must connect over LAN to the mySQL db on server 2 I added a user with following priveleges : +---------------+------------+ | host | user | +---------------+------------+ | % | mir | | 10.10.40.15 | mir | | x.x.x.x | mir | | localhost | mir | Disabled firewall temporary made sure that my username/password combinations are correct, flushed priveleges, restarted mysqld i wnt to /etc/my.cnf .. if i try to add the port=3306 bind-address=10.10.40.15 or anything that is different from 0.0.0.0 or 127.0.0.1 - mysql wouldn't restart i read and tried many forums and pages and asked friends for tips but nothing works So my question to you : are there any networking extensions that need to be installed for mysql, how do i know nothing is missing from the installation any troubleshooting tips, any idea how to fix this, any step by step check list, am i missing something simple/stupid, please anything that comes to mind, let me know Appreciate your feedback on this friday night stuck at work :P

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• Is it safe to use S3 over HTTP from EC2, as opposed to HTTPS

  - by Marc

  I found that there is a fair deal of overhead when uploading a lot of small files to S3. Some of this overhead comes from SSL itself. How safe is it to talk to S3 without SSL when running in EC2? From the awesome comments below, here are some clarifications: this is NOT a question about HTTPS versus HTTP or the sensitivity of my data. I'm trying to get a feeling for the networking and protocol particularities of EC2 and S3. For example Are we guaranteed to be passing through only the AWS network when communicating from EC2 to S3 Can other AWS users (apart from staff) sniff my communications between EC2 and S3 Is authentication on their api done on every call, and thus credentials are passed on every call? Or is there some kind of authenticated session. I am using the jets3t lib. Feedback from people with some AWS experience would be appreciated. Thanks Marc

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• Installing SDM on a Cisco 2821 ISR

  - by Sam Sanders

  I trying to change the configuration of our router, it's a Cisco 2821 Integrated Services Router. I don't know much about Cisco products. While looking at the PDF manual for the router I notices it talked about SDM Security Device Manager. But when I point my web browser at the IP address of the router, it give me a very simple web interface. It's sort of like a string builder for CLI commands. I'm guessing SDM was not installed on it. So my question how would I go about do that? I found this link (below), but I'm a bit new to networking. So any advice would be welcome. http://www.cisco.com/en/US/docs/routers/access/cisco_router_and_security_device_manager/software/quick/guide/SDMq7.html

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• AIX network parameters to close TCP sockets of unplugged devices

  - by ADD Geek

  Hi there We have an AIX box, running what we call in banking "ATM Switch" not the ATM networking switch, but the bank ATM driver. where we have some ATM machines connected to two server processes. The problem is, when we disconnect any of these machines, the netstat -na| grep <port number> command shows that the socket established for this disconnected device is still established, we have to manually send a command from the software to make the socket aware that it is not live anymore. Is there a parameter on tcp level to make this connection aware within a minute or two that this device is not connected anymore? we had the following parameters set with root privileges: no -o tcp_keepidle=1000 no -o tcp_keepcnt=2 no -o tcp_keepintvl=150 no -o tcp_finwait2=100 it was originally having the default values. but even after we changed these parameters and restarted the server processes, the problem was still there.

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• One-way forest trust between geographically distributed forests using Server 2008 R2

  - by bwerks

  Hi all, I'm planning out a joinder between two domains, as would take place with contracting companies. Forests A and B exist in distant sites, and there is to be a one-way forest trust so that domain users in Forest A can be authenticated on machines in Forest B. In order to facilitate this, each forest's domain controller must be able to contact each other in order to set up & confirm the trust, but my question is what underlying networking magic must take place beneath it. So far the prevailing approach has been to maintain a VPN connection between the two sites, but the technet documentation seems to indicate that DNS forwarding may be the way to go. Is this the case? Furthermore, if DNS will suffice, does that mean that there must be a server running DNS on boundary servers in each domain so that they can be reached from across the internet? How must they be configured? Thanks!

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• How to connect XP mode VM to the host so as to simulate LAN Activities?

  - by rsjethani

  First of all my PC config: Host:Windows 7(32-bit) Guest: Windows XP SP3 as XP Mode. Integration Features Disabled(I don't think it has any thing to do with networking). Network Connections on Host : 1.Local Area Connection(Realtek...) - unplugged(as no other PC is connected). 2.Nokia 2730 classic USB Modem - I use this connect to the internet. Now,How can I connect the guest to the host as if they were on a LAN. Please give specific steps as I am using Windows XP Mode/Virtual machine for the first time.

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• 10,000 RPM HDD (WD VelociRaptor) vs SSD for OS?

  - by GiH

  I currently have a 10,00RPM 150GB Raptor that I use for Vista. I'm about to upgrade to Windows 7, and while doing that I thought I'd buy another drive and install Ubuntu 9.10 on it. I don't want to partition the current drive I have, but I don't need 150GB for another OS. So, I'm having trouble deciding whether its worth it to buy a 64 GB SSD at the same price point as the 150GB WD VelociRaptor? Or should I just get a 7,200 RPM drive for really cheap (around $50)? Would it be better to use an SSD for the OS than a mechanical drive? I could always get a 32GB SSD too... Oh, and I don't want to virtualize Ubuntu because I'm going to be testing to see the differences in networking and overall performance.

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• Slight network lag on Small Business Server 2008 R2

  - by Sir.Nathan Stassen

  I recently upgraded a network from a SBS 2003 server to a SBS 2008 R2 Server. Both I and users have noticed a slight delay in network applications and browsing network drives on the new server. It is minor, maybe a second or two at most. However I am wondering if anyone knows of anyway to optimize the networking to service requests sooner to the workstations. The network is running a 1 gig network with some 100 meg devices (mainly network printers). All workstations are XP SP3 Network software runs out of a shared folder mapped as a network drive, no sql databases. Server is a Dell Poweredge T610 with plenty of ram, cpu power, and storage.

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• ruby: invalid opcode

  - by adamo

  There's a fairly complex application than runs on two VMs (on Xen). Both VMs run CentOS 6.2 with the exact same packages and configuration for every application running (minus networking which is different). SELinux is disabled on both. On machine A the application builds perfectly. On machine B when running some tests we get: ruby[2010] trap invalid opcode ip:7ff9d2944c30 sp:7fff9797e0f8 error:0 in ld-2.12.so[7ff9d2930000+20000] Digging a bit more to find out where the machines differ, machine A has: model name : Six-Core AMD Opteron(tm) Processor 2423 HE and machine B: model name : AMD Opteron(TM) Processor 6272 I've tried booting machine B with cpuid_mask_cpu=fam_10_rev_c in grub but it did not help either. So any advice as to how to deal with this, or how to approach the hosting provider so as to run this VM on another physical machine will be greatly appreciated.

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• A good resource for LAMP?

  - by Hypercube

  Hello, I want to learn about servers, not for any particular application, I simply want to learn. I am looking at LAMP, but I can't find any resources for learning about it. I have a giant book from 2004, would it still be applicable or should I use something more recent? I looked online but couldn't find anything beyond installation. Is there a comprehensive resource, preferably using Python (since I already know it) and preferably free, for learning LAMP? I don't know much about networking, is it a prerequisite for LAMP? Thanks in advance.

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• FoxPro 2.6 DOS on Windows 7 64-bit

  - by Rolando

  I support a company that has a very old, mission critical, FoxPro for DOS 2.6 (FPD) application. For variuos reasons the company didn't adapt/migrate their app, which, ironically, has been running even better under Windows XP (and 32-bit Win7) because the OS allowed new features like more reliable networking, distributed printing, email integration. Unfortunately for this company, most new machines now come with a 64-bit version of Windows 7, which is incompatible with their FPD app. I know this time the writing is on the wall: the only long-term solution is to migrate their app. But I wonder if anyone can suggest a temporary alternative path, which doesn't involve either: a) downgrade 64-bit Windows to 32-bit, or b) run the app on a virtualized 32-bit XP Thanks! PS: Happy New Year!!!

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• FoxPro 2.6 DOS on Windows 7 64-bit

  - by Rolando

  I support a company that has a very old, mission critical, FoxPro for DOS 2.6 (FPD) application. For variuos reasons the company didn't adapt/migrate their app, which, ironically, has been running even better under Windows XP (and 32-bit Win7) because the OS allowed new features like more reliable networking, distributed printing, email integration. Unfortunately for this company, most new machines now come with a 64-bit version of Windows 7, which is incompatible with their FPD app. I know this time the writing is on the wall: the only long-term solution is to migrate their app. But I wonder if anyone can suggest a temporary alternative path, which doesn't involve either: a) downgrade 64-bit Windows to 32-bit, or b) run the app on a virtualized 32-bit XP Thanks! PS: Happy New Year!!!

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• Sharing hp Deskjet F380 using cups via http driver issues with xp client

  - by ageis23

  Hi the problem is xp doesn't have built in drivers for my printer but vista does. On vista it works perfectly without any issues. However when I try using xp, it insists that I select a driver from the selection xp offers by default. The drivers I've downloaded from HP don't support networking. Hp have stated they're non networkable. Is there anything I can do about this? Any help is greatly appreciated and would save me getting ear ache!

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• Is opening ports in the firewall bad?

  - by Steven

  From what little I know about networking, opening ports lets external data get sent in. But how that data is handled is entirely up to the applications running on my machine. So if I'm not running any malicious applications, there should be nothing wrong with disabling the firewall, right? Also, how do applications work when ports aren't forwarded? For example, I need to forward port TCP 6112 to host Blizzard games, but I've heard that HTTP uses port 80, but I haven't forwarded that port, yet Firefox still works. Btw I'm using Windows Vista.

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• OpenSolaris with no gcc vs. Nexenta with no ext3

  - by Jake Wharton

  I'm attempting to migrate my server from linux to a Solaris variant during a hardware upgrade. The machine is based around an Abit AN-M2 board which has an NForce chipset. I have what seems to be a chicken-and-egg problem of sorts: OpenSolaris 2009.06 does not recognize the NIC and I cannot compile the drivers for it as it also lacks gcc. I haven't tested as to whether or not I can mount an ext3 partition yet but its moot if there is no networking. Nexenta 3.0b3 recognizes the NIC but I cannot get the ext3 drives mounted due to FSWfspart refusing to install. I do not know much about Solaris but I wager this is due to the fact that Nexenta is based around Debian as well. While I am reusing the mobo/CPU combo, I did just spent a lot of money on the other hardware around it and would very much like to get it up and running smoothly and quickly. Does anyone have any suggestions that are not: Get a new mobo/CPU Run another OS Use alternate NIC

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• Lan, vpn on Amazon EC2, how to?

  The problem is as follows: I have 2 windows2003 server instances running on the cloud. 1) How can I create a local area network from these 2 instances? 2) Assuming that I want to create a VPN network from these 2 instances, how do I do that? (I'm not very good in networking, therefor the above problem description might be incomplete or not very clear.) A detailed answer or clarification would be praised and appreciated! What I tried: 1) Setting up OpenVPN, but I got lost in the process. 2) Creating a VPN from windows2003 server in the following manner: on instance a): set up a dhcp server; set up an "accept income vpn" connection; with the followin tcp ip settings: obtain an ip from the dhcp server; on instance b): created a new vpn connection, tried to connect to intance A, using the instance A static IP but error 806 was thrown, something relate to a GRE protocol.

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• What are the best code-less website design sites available?

  - by Ken Pespisa

  I'm looking for an alternative to www.squarespace.com. Squarespace is great, but leans slightly toward the social networking industry. I'm looking for a simple way to build Web sites for small businesses. The criteria is the following: Requires no programming knowledge. No software to download - all design and maintenance can be done via browser Has a good selection of templates and layouts Essentially I'm looking for the features within Typepad.com or WordPress.com, but instead of focusing around a blog it would help build a more traditional Web site.

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• How do ring and bus network connect to router?

  - by lantopology

  Sorry this is probably a very silly question, but for some reason i am confused. How does a LAN with bus or ring topology connect to a router and other LANs? For example in a star network they all connect to a switch which can then connect to a router, but where does a switch go and fit in a bus or ring topology? In this image of a ring network there is no switch: http://www.brainbell.com/tutorials/Networking/images/01fig04.gif would the switch in the ring network simply be placed alongside the other nodes? Thank you very much

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• Does Dynamic DNS require separate subdomains?

  - by kce

  Hello. I have a functioning DHCP/DNS (ISC Bind 9.6, DHCP 3.1.1) server running on Debian that I would like to add DynamicDNS functionality to. I have a pretty simple question: Does DynamicDNS require (or recommend) separate sub-domains? I have seen a few tutorials where the the clients that are acquiring their IP addresses and other networking information via DHCP are on a different sub-domain as the servers which are statically configured (both in terms of IP, and DNS). For example: All the clients are on ws.example.org and the servers on example.org. Right now all of our servers and clients are in the same domain (example.org) but spread across different zone files (because we have multiple subnets). The clients are configured with DHCP and the servers are configured statically. If I want to setup DynamicDNS for the clients should I use a separate sub-domain? What's the best practice here (and why or why not would it be a bad idea to do otherwise)? Thanks.

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• Testing domains on intranet/local network?

  - by meder

  This may sound like a very silly question, but how could I setup domains ( eg www.foo.com ) on my local network? I know that all a domain is, is just a name registered to a name server and that nameserver has a zone record, and in the zone record there are several records of which the A Record is the most important in dictating where the lookup goes to, which machine it should point to. I basically want to make it so that I can refer to my other computer/webserver as 'www.foo.com' and make my local sites accessible by that, mess with virtualhost records in Apache and zone records for the domain except locally so I can explore and fiddle around and learn instead of having to rely on the domains I own on a public registrar that I could only access through the internet. Once again I apologize if this is a silly question, or if I'm completely thinking backwards. Background information: My OS is Debian, I'm a novice at Linux. I've done very small edits in zone records on a Bind9 Server but that's the extent of my networking experience.

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