Refer to the exhibit. A network engineer must block Telnet traffic from hosts in the range of 10.100.2.248 to 10.100.2.255 to the network 10.100.3.0 and permit everything else. Which configuration must the engineer apply?
Refer to the exhibit. A network engineer must block Telnet traffic from hosts in the range of 10.100.2.248 to 10.100.2.255 to the network 10.100.3.0 and permit everything else. Which configuration must the engineer apply?
To block Telnet traffic from hosts in the range of 10.100.2.248 to 10.100.2.255 to the network 10.100.3.0, the access control list (ACL) should deny TCP traffic on port 23 (Telnet port) from the specified IP range and then permit all other traffic. Option B correctly denies traffic on TCP port 23 from the specified range and then permits any other traffic, which is the required configuration.
Generally all answers are wrong but B could be the only possible answer.
range of 10.100.2.248 - 255, It should be 10.100.2.248 0.0.0.7
Yep, that's a typo in the question. 10.100.2.248/29
B is correct but only by eliminating the others. the answer is poorly constructed so the fact is that all answers are wrong, but B is the least incorrect answer
Why not the ACL like that access-list 101 deny tcp 10.100.2.248 0.0.0.7 10.100.3.0 eq 23 ?
this question is very easy because A- dont use statement (deny) C- block SSH , not Telnet D- block ICMP and permit everything