<div dir="auto">Getting a bit lost here. Why telnetd and port 23?<div dir="auto"><br></div><div dir="auto">The original suggestion was IIRC to</div><div dir="auto"><br></div><div dir="auto"> telnet 192.168.1.235 3493</div><div dir="auto"><br></div><div dir="auto">from .236 and vive-versa to see if the upsd port (3493) is reachabl - so if clients on one Pi can see devices served by (connected to) the other.</div><div dir="auto"><br></div><div dir="auto">Am I missing sone context?</div>Jim<br><br><div class="gmail_quote" dir="auto"><div dir="ltr" class="gmail_attr">On Fri, Feb 18, 2022, 00:29 Tim Dawson <<a href="mailto:tadawson@tpcsvc.com">tadawson@tpcsvc.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>It's been a very long time since I have seen a Linux distro enable telnetd to allow telnet connections proper. Test using telnet to the nut port number ("telnet xxx.yyy.zzz.kkk portno") and see if that connects, or try somethhing like ssh . . . <br><br><div class="gmail_quote">On February 17, 2022 11:39:41 AM CST, William Cole via Nut-upsuser <<a href="mailto:nut-upsuser@alioth-lists.debian.net" target="_blank" rel="noreferrer">nut-upsuser@alioth-lists.debian.net</a>> wrote:<blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr"><div>Thank you all for your offerings. Here are some results. All were run on the Pi server [235] except the change to the firewall setting which was run on the Mint machine.<br></div><div><br></div><div><i>sudo netstat -lntp</i></div><div><i>Active Internet connections (only servers)</i></div><div><i>Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name<br></i></div><div><i>tcp 0 0 <a href="http://0.0.0.0:22" target="_blank" rel="noreferrer">0.0.0.0:22</a> 0.0.0.0:* LISTEN 501/sshd</i></div><div><i>
tcp 0 0 <a href="http://0.0.0.0:631" target="_blank" rel="noreferrer">0.0.0.0:631</a> 0.0.0.0:* LISTEN 28384/cupsd</i></div><div><i>
tcp 0 0 <a href="http://0.0.0.0:445" target="_blank" rel="noreferrer">0.0.0.0:445</a> 0.0.0.0:* LISTEN 1011/smbd <br></i></div><div><i>
tcp 0 0 <a href="http://0.0.0.0:3493" target="_blank" rel="noreferrer">0.0.0.0:3493</a> 0.0.0.0:* LISTEN 499/upsd
</i></div><div><i>
tcp 0 0 <a href="http://0.0.0.0:139" target="_blank" rel="noreferrer">0.0.0.0:139</a> 0.0.0.0:* LISTEN 1011/smbd</i></div><div><i>
tcp6 0 0 :::22 :::* LISTEN 501/sshd
</i></div><div><i>
tcp6 0 0 :::631 :::* LISTEN 28384/cupsd
</i></div><div><i>
tcp6 0 0 :::445 :::* LISTEN 1011/smbd</i>
</div><div><i>
tcp6 0 0 :::139 :::* LISTEN 1011/smbd
</i></div><div><i>
tcp6 0 0 :::00 :::* LISTEN 530/apache2</i></div><div><br></div><div>and the second output:</div><div><br></div><div><i>sudo iptables -L -n -v</i></div><div><i>Chain INPUT (policy ACCEPT @ packets, 0 bytes)</i><i><br></i></div><div><i> pkts bytes target prot opt in out source destination<br></i></div><div>
<div><i>Chain FORWARD (policy ACCEPT @ packets, 0 bytes)<br></i></div><div><i> pkts bytes target prot opt in out source destination</i></div>
</div><div><i>
</i><div><i>Chain OUTPUT (policy ACCEPT @ packets, 0 bytes)<br></i></div><div><i> pkts bytes target prot opt in out source destination</i></div>
</div><div><br></div><div>As to firewalls, the Mint 20 that handles Linux network devices uses <i>Gufw</i>. <br></div><div>The Windows networked devices use<i> Windows Defender's</i> built-in firewall.</div><div><br></div><div>I added port 23 for telnet to the Gufw firewall and restarted the Mint machine and both of the Pis. Then ran:<br></div><div><br></div><div><i>sudo telnet 192.168.1.236</i> from the 235 Pi</div><div><i>sudo telnet 192.168.1.235</i> from the 236 Pi</div><div><br></div><div>Result in both cases:</div><div><br></div><div><i>Trying 192.168.1.xxx ...</i></div><div><i>telnet: Unable to connect to remote host: Connection refused</i>.<br></div><div><br></div><div>If it makes a difference, all the devices are tied together with Plume mesh network devices which are connected to FiOS.<br></div><div><br></div><div>Bill<br></div><div><br></div><div>-- </div><div><br><div dir="ltr" data-smartmail="gmail_signature"><div dir="ltr"><font face="arial,sans-serif">Fredericksburg, VA</font><br></div></div></div></div>
</blockquote></div><div style="white-space:pre-wrap"><div>-- <br>Sent from my Android device with K-9 Mail. Please excuse my brevity.</div></div></div>_______________________________________________<br>
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