Basic Access Control List (ACL) On ASA

How to permit traffic to servers behind a Cisco ASA device. Web Server 192.168.100.80 Email Server 192.168.100.25 DNS Server 192.168.100.53 access-list ServerAccess permit tcp any host 192.168.100.25 eq 25 access-list ServerAccess permit udp any host 192.168.100.53 e…

Avoiding fragmentation: How to find the path MTU

When a packet is traversing a network and encounters a segment that has an Maximum Transmission Unit MTU smaller than the size of the packet, the packet will be fragmented into two or more packets, each with its own IP header. This creates inefficiencies in the network…