root@Bitcoin-1:~# ~/litecoin-0.16.0/bin/litecoin-cli getpeerinfo | grep 9333

"addr": "38.87.54.164:9333",
"addr": "174.138.13.27:9333",
"addr": "173.94.177.224:9333",
"addr": "173.255.204.124:9333",
"addrbind": "140.82.58.152:9333",
"addr": "47.97.215.104:9333",
"addrlocal": "127.0.0.1:9333",
"addrbind": "140.82.58.152:9333",
"addrbind": "140.82.58.152:9333",
"addr": "5.9.5.135:9333",
"addrlocal": "127.0.0.1:9333",
"addrbind": "140.82.58.152:9333",
"addrlocal": "127.0.0.1:9333",
"addrbind": "140.82.58.152:9333",
"addrlocal": "127.0.0.1:9333",
"addrbind": "140.82.58.152:9333",
"addrlocal": "140.82.58.152:9333",
"addrbind": "140.82.58.152:9333",
"addrlocal": "127.0.0.1:9333",
"addrbind": "140.82.58.152:9333",
"addrlocal": "127.0.0.1:9333",
"addrbind": "140.82.58.152:9333",
"addrlocal": "140.82.58.152:9333",
"addrbind": "140.82.58.152:9333",
"addrlocal": "127.0.0.1:9333",
"addrbind": "140.82.58.152:9333",
"addrbind": "140.82.58.152:9333",
"addrlocal": "140.82.58.152:9333",
"addrbind": "140.82.58.152:9333",
"addr": "5.39.174.116:9333",
"addr": "94.130.52.104:9333",
"addrbind": "140.82.58.152:9333",

root@Bitcoin-1:~# ~/litecoin-0.16.0/bin/litecoin-cli getblockcount

1464192

root@Bitcoin-1:~# ~/litecoin-0.16.0/bin/litecoin-cli --version

Litecoin Core RPC client version v0.16.0

----

So latest version of Litecoin Core Full Node is running, but it is not listening.

The problem is: My node is invisible from outside on TCP port 9333:

root@thc-1:~# nmap 140.82.58.152
Starting Nmap 7.01 ( https://nmap.org ) at 2018-07-27 23:43 UTC
Nmap scan report for 140.82.58.152.vultr.com (140.82.58.152)
Host is up (0.043s latency).
Not shown: 996 closed ports
PORT STATE SERVICE
22/tcp open ssh
8333/tcp open bitcoin
9998/tcp open distinct32
9999/tcp open abyss
Nmap done: 1 IP address (1 host up) scanned in 2.71 seconds

--- (same test but locally; TCP port 9333 is indeed closed.)

root@Bitcoin-1:~# nmap localhost
Starting Nmap 7.60 ( https://nmap.org ) at 2018-07-27 23:44 UTC
Nmap scan report for localhost (127.0.0.1)
Host is up (0.0000040s latency).
Other addresses for localhost (not scanned): ::1
Not shown: 996 closed ports
PORT STATE SERVICE
22/tcp open ssh
8333/tcp open bitcoin
9998/tcp open distinct32
9999/tcp open abyss
Nmap done: 1 IP address (1 host up) scanned in 1.70 seconds

---

root@Bitcoin-1:~# cat ~/.litecoin/litecoin.conf

#----
rpcuser=ltcuser
rpcpassword=ltcpassword
rpcallowip=127.0.0.1
#----
listen=1
server=1
daemon=1
maxconnections=24
#--------------------
datadir=/root/LitecoinCore
#externalip=140.82.58.152

---

Basically TCP port 9333 isn't open... why ? (140.82.58.152 = host Bitcoin-1)

(+same problem exists with my other host 193.29.187.116 = host thc-1)

Another question: Should I install Electrum-LTC server, or Electrum-LTC users just connect to plain Litecoin Full Node at random ?

Okay, problem SOLVED !

It turns out that 'nmap' doesn't scan a port of 9333 by default. So I forced a full port scan.

root@Bitcoin-1:~# nmap localhost -p 1-65535

Starting Nmap 7.60 ( https://nmap.org ) at 2018-07-28 17:21 UTC
Nmap scan report for localhost (127.0.0.1)
Host is up (0.0000040s latency).
Other addresses for localhost (not scanned): ::1
Not shown: 65524 closed ports
PORT STATE SERVICE
22/tcp open ssh
7075/tcp open unknown
8332/tcp open unknown
8333/tcp open bitcoin
8545/tcp open unknown
9332/tcp open unknown
9333/tcp open litecoin
9998/tcp open distinct32
9999/tcp open abyss
30303/tcp open unknown
31416/tcp open boinc

Nmap done: 1 IP address (1 host up) scanned in 5.88 seconds

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