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1
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1answer
149 views

Percona: Got an error writing communication packets

Since a few days, two of our php-applications (symfony2) are reporting the following errors in mysql-logs: [Warning] Aborted connection 253 to db: '$appname' user: '$appname' host: 'localhost' (Got ...
18
votes
1answer
445 views

Virtualized MS-DOS computers cant communicate over IPX

I converted 2 MS-Dos 6.22 machines to virtual machines. Both computers have software that communicates over NETBEUI and IPX (I came to that conclusion after inspecting autoexec.bat - It loads IPX ...
2
votes
2answers
88 views

VLAN & Communication

I'm working on a project regarding Network Security and I've come to the topic regarding VLANs. I was wondering if it is possible to set up multiple VLANs (VLAN0, 10, 20, 30) in a way that all VLANs ...
0
votes
1answer
329 views

sshd on fedora 16 - unable to log in from internal network

I'm trying to access a new installation of fedora 16 that runs sshd service,with putty from a machine that lays in the same network. sshd is enabled and started and i'm able to ssh to it from the ...
-1
votes
6answers
345 views

Local Area Network (LAN) communication protocol

I'm a bit confused, and was wondering if someone can set me straight. Under a Local Area Network (LAN), what is the communication protocol for the data packets under i.e. ethernet CAT5 cable that ...
0
votes
1answer
275 views

Our own custom IRC network in our Linux server instance

Our company needs a secure chat server. Typically a closed, protected and secure IRC network. Is it possible to set it up just like we set apache or any other server software on our own server ...
2
votes
4answers
301 views

Intercom over IP?

This is an odd request, but I'm hoping some of you have had to field it before: We have an office in New York and remote employees in Oregon and Florida. Communication is extremely important to us, ...
3
votes
1answer
74 views

Machine cannot communicate on local network any more

I have a machine that has a problem I've never seen and cannot understand. The machine is a Dell laptop with Windows 7 Ultimate. The user tried to do something fancy with this machine (bridging the ...
0
votes
1answer
54 views

Port periodically blocked

I'm wondering what are the possible ways to block some port while it is in use by some other process? Short story long: I've got an app(1) that communicates with another app(2) on one host/local ...
7
votes
2answers
4k views

Best lightweight linux IRC server for a team

I'm looking for suggestions for an extremely lightweight IRC server for linux. It does not need a bunch of features or bloat. It's is for just our internal team (50- people), and small footprint is ...
2
votes
3answers
125 views

What's a good metric for determining the performance of my ethernet link across my optical comm. channel?

I have a system that I've built for using optical signals to communicate underwater. I'm using a GNURadio + USRP system to test this and I have a program that creates an ethernet connection across my ...
4
votes
4answers
745 views

How a router decides destination of packet?

I have a basic networking question. Two PCs are communicating on a WLAN. Both the PCs are behind routers or modems. Both the PCs have the same public IP. That public IP is most of the time is either ...
1
vote
3answers
194 views

What tool can I use to allow internal comunication in my network?

My network is a fully Microsoft stack. I have Windows Server 2003 server. What tool can I install on clients so they can talk internally without accessing outside?
0
votes
1answer
51 views

Retransmissions or loss of data

Friend of mine asked me a question lately. He wanted to know if JMS is handling duplicates in a way that the receiving side doesn't have to worry about this. This made me think about communication in ...
3
votes
5answers
532 views

What are the best LAN communication systems? [closed]

What are the best messaging and VOIP systems for medium to large corporate networks? What have you found to be the best in your experience and why? It should support: Instant messaging Video and ...
6
votes
3answers
544 views

How to manage communication during application downtime?

I've had a lot of experiences lately with application downtime, from both vendors and my own applications. This has got me thinking and as best I can google there isn't really a good or standard way ...
1
vote
2answers
395 views

How to write a good abuse email?

I work for a service provider, and we've suffered an attack. We've learned from it, but nonetheless it has cost us. The good thing is we have pcap traces of the event, and IP addresses. Now my ...
3
votes
2answers
510 views

How best to handle end user notification in the event of system failure incl. email?

I've been asked to research ways of handling end user notifications when systems such as email are experiencing problems. Perhaps an example will make this a little clearer. We have a number of ...
0
votes
2answers
160 views

Secure communication between Oracle client and server

As per project requirement i need to to secure communication between Oracle server and client. I have oracle version 11g. What are the configuration steps i need to follow in the client and server ...
1
vote
2answers
448 views

IIS replication - Is it possible

I have a requirement for a client that I have a centralised system that all his satellite branches can work on. Currently this is a ASP.net web forms app running under IIS 7 on win 2008 RC 2 using an ...
2
votes
1answer
406 views

Can a OCS 2007 R2 mediation server be installed on a front end server?

Is it possible to install the mediation server component of Office Communication Server 2007 R2 on to the same hardware as the front end server component, or do I need additional hardware? If it is ...
1
vote
2answers
123 views

deploying skype for 50 nationwide users with preset usernames

Is there a way to sign up a large group of skype names at once? is there a way to enable the users to be given a skype username based on their own e-mail addresses? What I would like to do is roll ...
0
votes
2answers
101 views

Satellite data in Russia?

Anyone familiar with options for transmitting data in Russia? I'd be interested in hearing about low-speed packet data and faster. Not really looking at VSAT initially as I'd like to keep the power ...
1
vote
4answers
262 views

distinguish between a wireless communication systems engineer and computer networks engineer

Please I want to know the difference between an MSC in Wireless Communication Systems and Wireless Computer Networking. Will I learn about computer networks in wireless communication systems? Please ...
4
votes
2answers
207 views

Looking for a centrally managed instant messaging system

We have a small school with classrooms across a few buildings. There are currently no phones going into each room but each teacher does have a school laptop and Internet. We need a way to instantly ...
6
votes
10answers
409 views

What are you implementing for communication in small business enviroments?

Background I'm working in a small company that is implementing and supporting network infrastructures in small business environments. Many times cost is a concern so I'm constantly looking for cheep ...
2
votes
4answers
887 views

Hosting your own Microblog, Twitter style. What Software is available? [closed]

I think Twitter can be useful inside companies, for daily work: To have a low profile way of communication, for example within a team of developers who don't necessarily all work on the very same ...
8
votes
5answers
233 views

Sysadmin related Twitter tags

What are your favorite (active!) tags for sysadmin related things? Examples (obviously MS biased...): #sql #sqlserver #windows #microsoft
2
votes
4answers
221 views

What would make working with DBAs easier?

Inspired by a similar question specifically about developers, I would like to know how system administrators work with Database Administrators better. In my 10 years experience as a system ...
34
votes
21answers
1k views

What do you wish developers would do differently? [closed]

As a developer, I spend most of my time thinking about the code, UI, data structures and so on, but (I bravely admit) I don't tend to consider the implications of my app for sysadmins and DBAs until ...
4
votes
5answers
1k views

Infiniband on Linux?

I will build computing cluster (about 64 nodes) and I'm looking for some informations. I want to connect them with Infiniband and install Linux. I tried to google it a little bit, but I couldn't find ...
2
votes
2answers
284 views

Is there a reliable VOIP setup?

I'm in Tasmania, Australia. We are about to get our second fibre cable lit up. Up till now, latency & reliability have been major issues in the take-up of VOIP. Considering this, can you ...
7
votes
8answers
421 views

Internet is a series of tubes? [closed]

Almost all of use have heard of Ted Stevens trying to describe the Internet with the analogy that it is a series of tubes (mp3). I believe that it likely that some tech person somewhere tried to ...