Palo Alto Networks Knowledgebase: Why a “Traceroute” Application has TCP Port 80 Included in the List of Standard Ports?
Why a “Traceroute” Application has TCP Port 80 Included in the List of Standard Ports?
Created On 02/07/19 23:46 PM - Last Updated 02/07/19 23:46 PM
Apart from the standard ICMP and UDP ports, the traceroute application in Palo Alto Networks database also contains a TCP port 80 in the list of standard ports. A TCP protocol can be also used as an underlying protocol for a traceroute application, and the fact that TCP port 80 is open in many environments for HTTP traffic, users are prone to use the port 80 when they want to bypass the firewall that tends to block traceroute traffic. This is the reason for adding the TCP port 80 in the list of Standard Ports of traceroute application.