You configure Solaris IP Filter on a Solaris system named myhost as a host-based firewall.

While attempting to telnet to myhost from another host named remotehost, you receive this error:

$ telnet myhost
Trying 192.168.1.100…

telnet: Unable to connect to remote host: Connection timed out

You run netstat -a on myhost and find this entry :

Local Address Remote Address Swind Send-Q Rwind Recv-Q State
————– ————————— ——— ———– ———- ———– ————
myhost.23 remotehost.39846 0 0 49640 0 SYN_RCVD

What is the cause of this problem?

A.
The ipf kernel module is not loaded.

B.
remotehost does not have a route to myhost.

C.
myhost and remotehost are on different networks.

D.
myhost has a block out rule for traffic to remotehost.

E.
Telnet is an insecure protocol and therefore Solaris IP Filter always blocks it.