Thursday, September 27, 2018

Switching issue

Issue: A non-domain PC(PC-A) can no longer print to a networked printer.

When I print from a domain PC(PC-B) it works because the job comes from the Print Server. However I couldn't ping the printer.

So I checked the firewall and it is dropping ICMP Replies because there is no matching Request. So for some reason the ICMP Request is going through the switches directly to the printer but the Reply goes through the firewall and gets dropped.

Network Map:https://imgur.com/a/TovlpLn Red is the ICMP Request and Green is the Reply/

We're in the middle of a switch refresh so the infrastructure is rather funky.



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