22.114.0. WHAT WILL HAPPEN TO ALL OTHER PACKETS
172.22.114.0. What will happen to all other packets? Once again, the
implicit deny all will drop any other packets.
In the TCP segment, there are six flag bits, two of which are the ACK
and RST. If one of these bits is set, then a match will occur. The SYN bit
indicates that a connection is being established. A packet with a SYN bit
without an ACK bit is the very first packet sent to establish a TCP connec-
tion. Figure 2.5 shows the TCP setup handshake.
Another issue to consider here is that as the administrator, you may
not be certain what protocols the host may be using. However, we do know
ports are chosen by workstations randomly between the port ranges of
1024 through 65535. Keeping this in mind, we could modify the first line
of the access list as follows:
access-list 111 permit tcp any host 172.17.0.0 0.0.255.255 gt 1023establishedhttps://traloihay.net
Figure 2.4 The access list applied to serial 0 inbound.
Internet