internet availability

pma111 used Ask the Experts™
1) From a non tech managers perspective, the internet, i.e. staff accessing which we access when connected to the corporate LAN is often hopelessly slow or sometimes not available for hours on end. As a general rule, will that be an internal issue or an external issue?

2) can you give me perhaps a top 3 reasons why internet access goes sluggish/off?

3) And could this be a result of poor internal admin/management, if so are there any prime candidates of what they are not doing thats leading to such issues? I.e. what are the internal admins requried to do on a daily/weekly/monthly basis to keep the internet connection for internal staff running smoothly?
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it should be in admins but sometimes it is just in slow internet line for a lot of employes. Long latency of internet can be also in bad networking devices (routers) and DNS name servers. You could check IT by adding an IP to browser when you cant connect to google

so you change to

if it works its problem with DNS.

Moust of problems are in employes they use internet for downloading and companies don't have tools to see and cut it. For best view of your network you can implement Firewall with IDP and internet statistics module. Where you can set policies like FUP ( .

So you will have realtime statistic who is using internet where he is browsing if someone hacking your network and many of things. As a solution you can use Kerio Control we are implementing these to our clients.
David AtkinTechnical Director
Top Expert 2015
I would agree with JeremyNo and say that its probably due to a DNS Issue/

Another thing to consider is your Internet connection speed.  As JeremyNo said, a common problem is caused because of employees downloading files which takes up your bandwidth and makes the connection slower to use.  Get your IT Admin to check your current internet connection with your provider and see if a better package is available for your needs.

Depending on the type of router you have, you maybe able to monitor how many sessions are currently open and how much they are downloading/uploading. - Again this would be something for your IT Admin to check out.
bbaoIT Consultant
technically, it is not only related to DNS but also WINS commonly if your DHCP servers gives a improper NodeType, e.g. B-node.

you may run IPCONFIG /ALL to list network configuration for further troubleshooting.
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Why would a dns issue happen sometimes and not others? Ie why. Does it happen sometimes and not others?
bbaoIT Consultant

if a host name is not caught in DNS cache, then a new DNS request will be sent to nominated name servers over the network. if an improper name server is accessed, say a local WINS server any for host name on the internet, it will cause delays and lags.
Steve JenningsSr Manager Cloud Networking Ops
1. Impossible to say, generally. Depends on whether local devices are misconfigured or overworked or whether the upstream provider / devices are overworked. Bandwidth may be consumed, line quality may be poor. Depends on whether you are using an internal DNS or if you are pointed to or some other publicly available DNS. Depends on whether your internet connection is proxied, load balanced, transparently proxied, subject to intense anti-virus or spam checking, whether you are using a stand-alone firewall like a Juniper or Palo Alto. Depends on whether you have an inline IDS or IPS. Possibly NAT pools are too slow and age out to slowly. Some nut job could be perpetrating a denial of service job, you could have an infected PC making constant connections outbound . . . I could go on and on and on. I think the statistical probability is bandwidth consumption or virus infection. But that depends on whether the "sluggishness" is isolated to a single host, subnet, everybody . . . whether it is intermittent for some and constant for others . . . whether you have VoIP . . .

2. I think those have been answered . . . bandwidth, DNS problems, locally busy devices or virus infection

3. Get a policy endorsed by management that specifies what kind of traffic is allowed, measure and monitor consumption. Ensure that the traffic that enters your network has been invited or has been scrubbed.

Good luck,
Distinguished Expert 2018
1. Could be the infrastructure that's in place (be it no longer sufficient or simply a misconfiguration), too slow an internet connection for the company's needs, or people doing too much downloading at a given time. (I've worked at places that refuse to allow for infrastructure upgrades until the top people were so frustrated it forced their hands, but I've also been at places where the acceptable use policies were too loose) Won't go into details of DNS, etc. as so many people have already provided good answers and details.

The technical team should be informed, and it should escalate to whoever is in charge of the network.

2. Mostly stuff that's already been mentioned: Bandwidth (internet connection speed), DNS, network traffic of devices, malware. (I know I named 4, but those should all be checked)

3. Are there existing policies of acceptable use, and do users get prompted that they accept the terms of those policies? If so, this is IT's chance to enforce those policies and take appropriate action. If not, monitor the network traffic, identify potential issues and take appropriate measures. Some of the large volume of traffic could be justified, while others obviously would be users basically goofing off and using internet radio, youtube, etc. If you eliminate the network traffic that is unacceptable, then you can determine whether your internet connection is sufficient or not.
You got loads of good advises here, but being a non-tech there are some simple test that you can do or ask your admin to do.
Most of the time the problems are internal, (for various reasons ). It may happen to be external, then your provider will be the one to be contacted.

When things are internal, the first reason is always heavy usage due to non-restrictions.
Secondly can be configuration issues and lastly faulty devices along.

basic things would be to start checking how much users you have now and if the bandwidth you have is really enough.
Most issue are related to the It-admin themselves using the bandwidth to download.. thinking no-one would be able to pin them. We have attended many similar issues and found out that the usage was form the IT team. one idea would be to implement a monitoring solution  where you would have full access to monitor everything.

 There are several tools available on trial basis that you can use. if you are satisfied with them then you can think of having one permanent. that will allow you to implement policies as suggested earlier.

then after those preliminary tests, you can then have the IT admins check all the technical stuffs mentioned above.

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