$4\mathrm{.}3-3$b Network Address Translation $($b$).\backslash$Consider the following scenario in which host $192\mathrm{.}168\mathrm{.}0\mathrm{.}3$ is communicating with an external web server at IP address $156\mathrm{.}76\mathrm{.}29\mathrm{.}8.$ The NAT table shows the table entry associated with this TCP flow. What are the source and destination IP addresses and port numbers at point $B?$

$$

$135\mathrm{.}17\mathrm{.}00\mathrm{.}5$

$156\mathrm{.}76\mathrm{.}29\mathrm{.}8$

$$ The source IP address is:

$$ The destination port number is:

$7789$

$$ The destination IP address

$80$

$$ is:

$135\mathrm{.}17\mathrm{.}00\mathrm{.}5$

$4010$

The source port number is:

$7.192\mathrm{.}168\mathrm{.}0\mathrm{.}1$

$8.192\mathrm{.}169\mathrm{.}0\mathrm{.}4$