itemprop="text"> I'm new to networking and am trying to get my terminology straight. I've Google this question but haven't found anything that clearly explains it. itemprop="text"> class="normal">Answer I'm not sure that there is an official definition of "netblock", but in common usage, I've most frequently heard it used in reference to an IP address allocation assigned by an href="https://en.wikipedia.org/wiki/Regional_Internet_registry" rel="noreferrer">RIR to another organization. "Subnet", on the other hand, is a more broad networking concept, used when referring to a portion of the IP addresses that are part of a larger network scope. So, to use these terms together, I will use this fictitious situation: ...

I'm new to networking and am trying to get my terminology straight. I've Google this question but haven't found anything that clearly explains it. Answer I'm not sure that there is an official definition of "netblock", but in common usage, I've most frequently heard it used in reference to an IP address allocation assigned by an RIR to another organization. "Subnet", on the other hand, is a more broad networking concept, used when referring to a portion of the IP addresses that are part of a larger network scope. So, to use these terms together, I will use this fictitious situation: ARIN has allocated the 203.0.113.0/24 netblock to MyBigCorporation MyBigCorporation needs to subdivide this allocation into smaller subnets for various purposes, so... MyBigCorporation allocates 203.0.113.0/28 (a subnet of 203.0.113.0/24 ) for use by their inbound MXes

itemprop="text"> I am trying to achieve what some years ago was a problem due to miss configured servers that caused "handshake alert: unrecognized_name" when a SNI enabled client ( for Java 1.7 or bigger clients) would send during the handshake the Extension server_name, server_name: [type=host_name (0), value=hostname] for example this question was how to avoid this : href="https://stackoverflow.com/questions/7615645/ssl-handshake-alert-unrecognized-name-error-since-upgrade-to-java-1-7-0">https://stackoverflow.com/questions/7615645/ssl-handshake-alert-unrecognized-name-error-since-upgrade-to-java-1-7-0 . My apache version is 2.4.33, on Ubuntu 16.04. and the config file that I use looks like this : ssl_module> Listen 8095 mod_gnutls....

I am trying to achieve what some years ago was a problem due to miss configured servers that caused "handshake alert: unrecognized_name" when a SNI enabled client ( for Java 1.7 or bigger clients) would send during the handshake the Extension server_name, server_name: [type=host_name (0), value=hostname] for example this question was how to avoid this : https://stackoverflow.com/questions/7615645/ssl-handshake-alert-unrecognized-name-error-since-upgrade-to-java-1-7-0 . My apache version is 2.4.33, on Ubuntu 16.04. and the config file that I use looks like this : Listen 8095 Listen 8095 ServerName localhost ServerName value.that.does.not.match.the.cn.in.certificate ServerAlias value.that.does.not.match.the.cn.in.certificate DocumentRoot /var/www/html SSLEngine on SSLCertificateFile /path_to_certificates/selfsigned.cert SS...

itemprop="text"> I have recently taken over as an administrator for an IBM chassis and associated blades, along with accompanying IBM SAN. One of the blades is running VMWare ESXi 5, and we don't need it anymore, so I'm going to wipe it and install Windows Server The blade has no onboard storage, and is setup to boot from the SAN. According to the SAN software, it has two 120 gig partitions and a 30 gig partition carved out. I've planned to just use the existing storage setup for the machine, so wiping and installing new. I loaded Windows Server 2012 R2 setup and when I get to the bit where I'm choosing where to install windows, I get the following oddness (image inline below): rel="nofollow noreferrer"> by imgur.com"> This seems strange to me, but I'm new to this rol...

I have recently taken over as an administrator for an IBM chassis and associated blades, along with accompanying IBM SAN. One of the blades is running VMWare ESXi 5, and we don't need it anymore, so I'm going to wipe it and install Windows Server The blade has no onboard storage, and is setup to boot from the SAN. According to the SAN software, it has two 120 gig partitions and a 30 gig partition carved out. I've planned to just use the existing storage setup for the machine, so wiping and installing new. I loaded Windows Server 2012 R2 setup and when I get to the bit where I'm choosing where to install windows, I get the following oddness (image inline below): This seems strange to me, but I'm new to this role. Is this normal behavior for a setup of this type? Why are some of them showing as Offline? Can I safely format the ones listed as Primary and just roll with the install process? Thanks! Answer The most likely reason for seeing all the driv...

itemprop="text"> I have noticed a peculiar behavior of my google apps domain. Most of the mails come through as you would expect, but over a period of time I have come to the conclusion that mails from certain senders don't come through. After identifying one such sender, whose mails wouldn't come through, I have asked him to try to send me an email and forward the "delivery failure"-response to my regular gmail. The delivery failure response contained the following snippet: ----- Transcript of session follows ----- /> ... Deferred: Connection timed out with ghs.l.google.com. This helped me to identify the problem by doing a quick search which led me to href="http://support.google.com/a/bin/answer.py?hl=en&topic=11543&answer=67359" rel="nofollow norefe...

I have noticed a peculiar behavior of my google apps domain. Most of the mails come through as you would expect, but over a period of time I have come to the conclusion that mails from certain senders don't come through. After identifying one such sender, whose mails wouldn't come through, I have asked him to try to send me an email and forward the "delivery failure"-response to my regular gmail. The delivery failure response contained the following snippet: ----- Transcript of session follows ----- ... Deferred: Connection timed out with ghs.l.google.com. This helped me to identify the problem by doing a quick search which led me to this page on Google Apps Help Forum. Indeed, I checked the DNS record for my domain, and @ was set to ghs.google.com. (CNAME), which it shouldn't be. Changing that to @ 74.125.93.121 (A) * resolved the problem. I understand that in the cases where the mail wouldn't come through, my domain name was substituted by it's cano...

The first thing i need say is english isnt my native language so i hope u guys can understand me. I`m willing start host an website and mail services on my home, the problem is i dont have many computers, just an old but "good" computer able to use vmware and run 3 o 4 windows 2008. The first idea i have is do this setup: Host Windows 2008 DC Start an exhchange server in one Virtual PC Start an webserver in one Virtual PC Start an database server in one Virtual PC My question start about the basics, the DNS, reading the microsoft docs, i see is an good pratice do a subdomain for DC and set the main domain on webserver, but i dindt get how this works... The link where i get this info: href="http://technet.microsoft.com/en-us/library/cc759036.aspx" rel="nofollow noreferrer">http://technet.microsoft...

The first thing i need say is english isnt my native language so i hope u guys can understand me. I`m willing start host an website and mail services on my home, the problem is i dont have many computers, just an old but "good" computer able to use vmware and run 3 o 4 windows 2008. The first idea i have is do this setup: Host Windows 2008 DC Start an exhchange server in one Virtual PC Start an webserver in one Virtual PC Start an database server in one Virtual PC My question start about the basics, the DNS, reading the microsoft docs, i see is an good pratice do a subdomain for DC and set the main domain on webserver, but i dindt get how this works... The link where i get this info: http://technet.microsoft.com/en-us/library/cc759036.aspx So the point is i do the DC, install the Webserver, start an dns, set the DC DNS as forward to webserver DNS? Then the DC dns become something like as secondary DNS is it? The setup i`m planning is the best option? Someone co...