![]() ![]() In this case, try running iperf the other way around ie: -s/server side on the other computer and -c/client on the rpi. If you get "Connection refused" then you've still got a connectivity/firewall issue. ![]() You should see a datagram xfer happening between the two computers. So does this line confirm that the the device is in fact listening on that port and that it's being allowed through the $ sudo ss -tulwĬode: Select all > iperf -c -u -p 69 on the machine it's not a problem, it's really just a TFTP issue.ĮDIT 1: The output of iptables -L -n -v ~]# iptables -L -n -v Chain INPUT (policy ACCEPT 0 packets, 0 bytes) I need the TFTP server to be accessible by any computer outside of the network to setup a few hundred CISCO phones across different countries and offices. I also tried to turn off firewalld but I still have this issue. Nmap done: 1 IP address (1 host up) scanned in 0.55 seconds Nmap scan report for ZZZZZZZZZZZZZZZZZZZZZZZZ (51.15.XXX.YY) I tried to run a port scan from the other machine and it seems that the port is accessible and open: ~]# nmap -sU -p 69 51.15.XXX.YY Tail -F /var/log/messages will show the following line when accessing from localhost but nothing when accessing from another machine. Getting from 51.15.xxx.yy:dir.txt to dir.txt TFTP Access using another computer: ~]# tftp -v 51.15.xxx.yy -c get dir.txtĬonnected to 51.15.xxx.yy (51.15.xxx.yy), port 69 Getting from localhost:dir.txt to dir.txt TFTP Access using localhost, from the same machine: ~]# tftp -v localhost -c get dir.txt ![]() ![]() The firewall is configured correctly and the port is accessible. However, if I try to access the TFTP server from another server, I get a time out. The TFTP server is up and running and works well when trying to access a file, connecting on localhost. ![]()
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