1 votes 1 votes Layer 3 or packet filtering firewalls can look up to network layer so it should block hosts , protocols and protocols from a host only as it can't look into the TCP header so how can it also block port ? Anu Priya 1 asked Jul 10, 2017 Anu Priya 1 197 views answer comment Share Follow See 1 comment See all 1 1 comment reply joshi_nitish commented Jul 10, 2017 reply Follow Share yes layer 3 cant block incoming packets based on port no, but it can block host for a particular ip address.. 0 votes 0 votes Please log in or register to add a comment.
