* Carlos E. R. <robin.listas@telefonica.net> [04-02-19 22:16]: [...]
So you are scanning your client, from your client. I don't think this gives any information.
Assuming that it is the server which blocks the connection, you have to scan the server from two client locations.
Or scan in both directions, client to server, then server to client. Using one working client and one faulty client.
server to workstation that fails (192.168.1.3 -> 192.168.1.10) # nmap -F 192.168.1.10 Starting Nmap 6.47 ( http://nmap.org ) at 2019-04-02 23:05 EDT Nmap scan report for Crash.wahoo.no-ip.org (192.168.1.10) Host is up (0.00030s latency). Not shown: 94 filtered ports PORT STATE SERVICE 22/tcp open ssh 111/tcp open rpcbind 1720/tcp closed H.323/Q.931 1723/tcp closed pptp 1755/tcp closed wms 2049/tcp open nfs MAC Address: 70:71:BC:E9:03:C0 (Pegatron) Nmap done: 1 IP address (1 host up) scanned in 1.97 seconds # systemctl stop SuSEfirewall2 # nmap -F 192.168.1.10 Starting Nmap 6.47 ( http://nmap.org ) at 2019-04-02 23:05 EDT Nmap scan report for Crash.wahoo.no-ip.org (192.168.1.10) Host is up (0.00026s latency). Not shown: 94 filtered ports PORT STATE SERVICE 22/tcp open ssh 111/tcp open rpcbind 1720/tcp closed H.323/Q.931 1723/tcp closed pptp 1755/tcp closed wms 2049/tcp open nfs MAC Address: 70:71:BC:E9:03:C0 (Pegatron) Nmap done: 1 IP address (1 host up) scanned in 3.68 seconds # systemctl start SuSEfirewall2 failing workstation to server (192.168.1.10 -> 192.168.1.3) # nmap -F 192.168.1.3 Starting Nmap 7.70 ( https://nmap.org ) at 2019-04-02 23:09 EDT Nmap scan report for wahoo.wahoo.no-ip.org (192.168.1.3) Host is up (0.00013s latency). All 100 scanned ports on wahoo.wahoo.no-ip.org (192.168.1.3) are filtered MAC Address: 78:E3:B5:AD:F1:2F (Hewlett Packard) Nmap done: 1 IP address (1 host up) scanned in 3.47 seconds # systemctl stop firewalld nmap -F 192.168.1.3 Starting Nmap 7.70 ( https://nmap.org ) at 2019-04-02 23:10 EDT Nmap scan report for wahoo.wahoo.no-ip.org (192.168.1.3) Host is up (0.00012s latency). All 100 scanned ports on wahoo.wahoo.no-ip.org (192.168.1.3) are filtered MAC Address: 78:E3:B5:AD:F1:2F (Hewlett Packard) Nmap done: 1 IP address (1 host up) scanned in 3.44 seconds # systemctl start firewalld with server firewall stopped (192.168.1.3) # nmap -F 192.168.1.3 Starting Nmap 7.70 ( https://nmap.org ) at 2019-04-02 23:11 EDT Nmap scan report for wahoo.wahoo.no-ip.org (192.168.1.3) Host is up (0.00010s latency). Not shown: 92 closed ports PORT STATE SERVICE 22/tcp open ssh 25/tcp open smtp 80/tcp open http 111/tcp open rpcbind 139/tcp open netbios-ssn 445/tcp open microsoft-ds 2049/tcp open nfs 3306/tcp open mysql MAC Address: 78:E3:B5:AD:F1:2F (Hewlett Packard) Nmap done: 1 IP address (1 host up) scanned in 1.61 seconds # systemctl start SuSEfirewall2 another workstation to server with both firewalls up (192.168.1.2 -> 192.168.1.3) # nmap -F 192.168.1.3 Starting Nmap 7.70 ( https://nmap.org ) at 2019-04-02 23:15 EDT Nmap scan report for wahoo.wahoo.no-ip.org (192.168.1.3) Host is up (0.0047s latency). Not shown: 90 filtered ports PORT STATE SERVICE 22/tcp open ssh 25/tcp open smtp 80/tcp open http 111/tcp open rpcbind 139/tcp open netbios-ssn 443/tcp closed https 445/tcp open microsoft-ds 465/tcp closed smtps 587/tcp closed submission 2049/tcp open nfs MAC Address: 78:E3:B5:AD:F1:2F (Hewlett Packard) Nmap done: 1 IP address (1 host up) scanned in 7.30 seconds with server firewall down (192.168.1.2 -> 192.168.1.3) # nmap -F 192.168.1.3 Starting Nmap 7.70 ( https://nmap.org ) at 2019-04-02 23:17 EDT Nmap scan report for wahoo.wahoo.no-ip.org (192.168.1.3) Host is up (0.0020s latency). Not shown: 92 closed ports PORT STATE SERVICE 22/tcp open ssh 25/tcp open smtp 80/tcp open http 111/tcp open rpcbind 139/tcp open netbios-ssn 445/tcp open microsoft-ds 2049/tcp open nfs 3306/tcp open mysql MAC Address: 78:E3:B5:AD:F1:2F (Hewlett Packard) Nmap done: 1 IP address (1 host up) scanned in 1.81 seconds tks, -- (paka)Patrick Shanahan Plainfield, Indiana, USA @ptilopteri http://en.opensuse.org openSUSE Community Member facebook/ptilopteri Registered Linux User #207535 @ http://linuxcounter.net Photos: http://wahoo.no-ip.org/piwigo paka @ IRCnet freenode -- To unsubscribe, e-mail: opensuse-support+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-support+owner@opensuse.org