1 Is there any port open in 192168603 Explain 2 Was complete

1. Is there any port open in 192.168.60.3? Explain.

2. Was completed the three hand shake between the source IP address 172.27.20.4 port 58173 and destination IP address 192.168.60.5 port ssh. Explain.

File Edit View Go Capture Analyze Statistics Telephony Iools Internals Help Filter: Expression Clear Apply Save No Time Source Destination Protocol Info UV ICMP Echo (ping) reply id 0x809e, seq 6400/25, t 4 0.00 2152 192.168. 60.5 172. 27. 20.4 5 3.162161 172. 27. 20.4 192.168.60. 3 TCP 58173 ftp [SYN] seq 0 win 2048 Len 0 6 3.162223 172. 27. 20.4 58173 ssh [SYN] Seq 0 win 2048 Len 0 192.168.60 3 TCP TCP ftp 58173 CRST, ACK] Seq 1 Ack 1 Win 0 Len 0 7 3.162245 192.168. 60.3 172. 27. 20.4 ssh 58173 [SYN ACK] Seq 0 Ack-1 win 5840 Le 8 3.162337 192 168. 60.3 172. 27. 20.4 TCP 9 3.162523 172.27.20.4 192.168. 60.3 TCP 58173 ssh [RST] Seq 1 win 0 Len 0 10 3.199758 TCP 58173 ftp ISYN Seg 0 Win 2048 Len 0 172. 27. 20.4 192 168.60.5 58173 Ssh [SYN] Seq 0 win 2048 Len-0 11 3.199797 72. 27. 20.4 192 168.60.5 TCP 12 3. 201498 0.5 TCP ftp 58173 [SYN ACK] Seg-0 Ack-1 win 32696 L 192.168.60 172. 27. 20.4 172.27.20.4 13 3.201745 192.168.60 TCP ssh 58173 [SYN, ACK] Seq 0 Ack-1 win 32696 L 14 3. 201750 172.27.20.4 192.168. 60.5 TCP 58173 ftp [RST] Seq-1 win-0 Len 0 15 3. 201921 172.27.20.4 192 168 60.5 58173 ssh CRST] Seq 1 Win 0 Len 0 TCP ICMP Echo (ping) request id 0xbc23 seq 0/0, tt 1-4 16 16.034407 172.27.20.4 192.168.60.5 ICMP Echo (ping) reply id 0xbc23, seq 0/0, ttl 2 17 16.035120 192. 168.60.5 172. 27.20.4 Seq win 4096 Len 18 16.338648 172.2 7 Ssh [SYN] TCP 19 16.338672 192.168.60 TCP 41197 24 [SYN] Seq-0 win-4096 Len 0 172.27. 20.4 20 16. 339345 192.168. 60.5 172.27.20 TCP ssh 41197 [SYN ACK] Seq-0 Ack-1 in 32696 L 41197 ssh TRST 21 16 3395 76 172 27.20.4 192.168.60.5 Seg-1 win 0 Len-0 TCP Frame 5: 60 bytes on wire C480 bits), 60 bytes captured C480 bits) Ethernet II src: Adaptec ec:f5 8e C00:00: dl: ec 8e), Dst: Intel 75:18:20 (00:03:47:75:18: 20) Internet Protocol Version 4 src: 172.27.20.4 (172.27. 20. 4), Dst: 192.168.60.3 (192.168.60. 3) Transmission Control Protocol, Src Port: 58173 (58173 Dst Port ftp (21), Seq: 0, Len: 0 0000 00 03 47 75 18 20 00 00 ec f5 8e 08 00 45 00 Gu 0010 00 28 82 40 00 00 28 06 53 c5 ac 1b 14 04 CO a8 .C. a. C. S 0020 3c 03 e3 3d 00 15 b2 04 bd 59 00 00 00 00 50 02 .Y. ..P. 0030 08 00 98 66 00 00 00 00 00 00 00 00

Solution

First, the Application Name is the name given to describe what the ports are that you are opening. In our example below, you can see this router has drop-down menus and empty boxes. If you are opening a common port such as FTP, selecting that option enables that port. However, in most situations, you need to type the name of the application. For example, you would type in the name of the game.

Next is the Externet Port and Internet Port. Enter the port you want to open in both of these fields. For example, if you were opening port 88, you would enter 88 in both boxes.

Next is the Protocol, which is often able to be either Both, TCP, or UDP. If you are uncertain of the exact protocol needed, use Both. If you do not have a Both option, create two open ports for both TCP and UDP.

Next is the To IP address, which is the IP address of the computer or networking device this port is being forwarded to on the network.

Finally, once all these values have been configured, check the Enabled box and click the Save Changes button.

Port Range Forwarding

If your application or game requires a range of ports, such as 6112-6119, your router should have a Port Range forwarding section like the one shown below. In this section, you would follow the same steps as those mentioned above, however, instead of entering an individual port, you would enter the starting and ending port number. For example, if you were given instructions to open port 6112-6119, you would enter 6112 as your starting port and 6119 as your ending port.

DMZ

Finally, if after enabling port forwarding you are still encountering issues with another computer or application seeing your computer, it may be necessary to enable DMZ. Often this setting is in the same area of the router configuration as discussed above and can be changed from disabled to enabled.