Free network analysis software
Hi
I have a large customer who has problems with his Network. They called us and told some of the computers are losing connection to the domain server (maintained by the network company) and internet many times a day. We checked and came to the result that they have network problems (maybe switch, router etc.).
The problem is they have another company to look after their network (and server as I told). We don’t have any access to this router’s and switches’. So our network team can’t analyze this problem. That company specialized on Network tells me, all there switches and routers are working fine and if something is not working they will get an alarm. They told me to test the network with Wireshark or other Tool. How can I test the Server and client with Wireshark? Is there any other better Tool?
Thanks
Leonie
I have a large customer who has problems with his Network. They called us and told some of the computers are losing connection to the domain server (maintained by the network company) and internet many times a day. We checked and came to the result that they have network problems (maybe switch, router etc.).
The problem is they have another company to look after their network (and server as I told). We don’t have any access to this router’s and switches’. So our network team can’t analyze this problem. That company specialized on Network tells me, all there switches and routers are working fine and if something is not working they will get an alarm. They told me to test the network with Wireshark or other Tool. How can I test the Server and client with Wireshark? Is there any other better Tool?
Thanks
Leonie
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ASKER
@ks_admin
I love Wireshark but how to work with this Tool? Is there no other Tool to send some data to the Server and reverse and check whether it fails?
@fmarshall
can i have your script?
I love Wireshark but how to work with this Tool? Is there no other Tool to send some data to the Server and reverse and check whether it fails?
@fmarshall
can i have your script?
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ASKER
On Monday I will go to this customer and try a traceroute and give you both points.
In your role, don't you have remote access? That saves a lot of time / particularly calendar time.
ASKER
hi fmarshall
no we are freelancers. we don't have remote access to this company.
no we are freelancers. we don't have remote access to this company.
ASKER
@fmarshall
traceroutes looks fine. any idea?
traceroutes looks fine. any idea?
How long did you analyze for? If there is no interruption during your testing, then maybe everything is fine at the TCP level. Is it an application going idle, or do you have more specifics on what they're "losing" ?
ks_admin
ks_admin
ASKER
Hi ks_admin
we are still analyzing. the network team has switched all alarms on.
i will let you both know.
we are still analyzing. the network team has switched all alarms on.
i will let you both know.
Re traceroutes:
"Fine" in this context... ? Fine would be that you can see some individual nodes along the path. Then, when there's a dropout you'll be able to tell which node is the last one that works in the chain. If there aren't any hops in the traceroute then it will be much less useful.
"Fine" in this context... ? Fine would be that you can see some individual nodes along the path. Then, when there's a dropout you'll be able to tell which node is the last one that works in the chain. If there aren't any hops in the traceroute then it will be much less useful.
ASKER
You blocked out all the interesting addresses so I can't tell really. All I see are public addresses. But at least there are lots of hops so if the network fails at one of them then you should have an idea where the failure occurred - one hop beyond.
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Thanks
ks_admin