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12-11-2017 04:31 AM - edited 03-08-2019 01:03 PM
Hi,
We have been facing a strange issue in our network. When we implement an ACL on a router or a L3 switch at branch end the Citrix App launch or any other web services are getting slow. But when we access the same application without ACL, it's very fast. I did check the latency from network side with and with out ACL, but didn't find any delay. Kindly suggest what can cause this kind of issue.
Thanks,
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12-11-2017 10:00 AM
You have probably blocked some ports that are needed such as DNS for name lookups etc.
Easiest thing to do is to temporarily add a deny line and log it so you can see what is being blocked.
Jon
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12-11-2017 07:30 AM
Please, could you add a simple diagram indicating which interface your ACL is applied on, hosts, direction and some lines of the ACL?
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12-11-2017 10:00 AM
You have probably blocked some ports that are needed such as DNS for name lookups etc.
Easiest thing to do is to temporarily add a deny line and log it so you can see what is being blocked.
Jon
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12-13-2017 12:39 AM
We did the same and allowed the required dependencies which were getting blocked earlier. Now the application started working normal. Thanks for your response.
