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Hi Folks,
We are using Perle 494 control units connecting over a frame relay network and they are connected via TCP/IP (Ethernet card in each controller).
We have been having trouble with Nachi (the Port 135 and Port 445 nightmare) so we have put ACL's (Access Control Lists) on our routers. They are all the same and here is what one looks like:
Extended IP access list 130
deny icmp any any echo
deny icmp any any echo-reply
deny tcp any any eq 4444
deny udp any any eq tftp
deny tcp any any eq 707
deny tcp any any eq 135
deny tcp any any eq 137
deny tcp any any eq 138
deny tcp any any eq 139
deny tcp any any eq 193
deny tcp any any eq 445
deny tcp any any eq 593
deny tcp any any range 666 765
permit ip any any
well if a control unit fails it will NOT attach again. We found that removing the ACL it would pop RIGHT back up. So something in this is blocking something the Perle needs. Does any have any idea what port(s) the Perle is using ? PC's that are attached at each site and connect through the router are FINE so it is something to do the ACL and the Perle.
Thanks in advance !
Chuck
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