PORT STATE SERVICE 1338/tcp filtered wmc-log-svc Nmap done: 1 IP address (1 host up) scanned in 2.07 seconds Port forward settings (this is an ASUS RT-N12D1 Router if that's relevant): What could cause this? It looks like there's a firewall stopping communication but I don't have any firewall configured.
“filtered” means that a firewall, filter, or other network obstacle is blocking the port so that Nmap cannot tell whether it is open or closed. Excerpt from the NMAP manual regarding the various state combinations: The output from Nmap is a list of scanned targets, with supplemental information on each depending on the options used. iptables - Why are some ports reported by nmap filtered filtered : Nmap cannot determine whether the port is open because packet filtering prevents its probes from reaching the port. The filtering could be from a dedicated firewall device, router rules, or host-based firewall software. These ports frustrate attackers because they provide so little information. Using PortQry to Check TCP/UDP Open Ports (Port Scanner Jan 14, 2020
Filtered. If you set it to closed, a port scanner will find ports set to ‘closed’. If ports are filtered, a port scanner won’t usually detect them. Check out grc.com and use the “shields up” port scanner tool to see if ports on your network are “stealth” (filtered) or closed or open
5 Basic Port Scanning Techniques - Inside Out Security Mar 29, 2020 How to bypass filtered ports of ipv4? - Euask.com acl SSL_ports port 443 563 1863 5190 5222 5050 6667 acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 # https acl Safe_ports port 70 # gopher acl Safe_ports port 210 # wais acl Safe_ports port 1025-65535 # unregistered ports acl Safe_ports port 280 # http-mgmt
Using PortQry to Check TCP/UDP Open Ports (Port Scanner
Nov 27, 2013 · I've been screwing around with various settings for an hour: DMZ passthru works perfectly (port 22 goes to my internal server, but so does every other port); but port forwarding on just port 22 doesn't work. If you configure forwarding for some external port other than 22, it works fine. Furrfu.