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[SOLVED] Cannot access hugo server from a remote computer

I am remotely (via SSH) working on my artix web server where I am updating my website with hugo (static webpage generator). To preview the freshly updated website, hugo software runs a temporary webserver for test purposes at localhost:1313

Code: [Select]
Web Server is available at http://localhost:1313/ (bind address 127.0.0.1)

Then I try to access this preview from the remote client in a regular web-browser. I replace the `localhost` with the artix server's local IP address, e.g. 192.168.2.135:1313, but always get a ERR_CONNECTION_REFUSED. I have checked that I am not blocking port 1313 in iptables and that iptables is running:

Code: [Select]
# Generated by iptables-save v1.8.4 on Sun Jul 12 10:32:23 2020
*filter
:INPUT DROP [0:0]
:FORWARD DROP [0:0]
:OUTPUT ACCEPT [57:7468]
:TCP - [0:0]
:UDP - [0:0]
-A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -m conntrack --ctstate INVALID -j DROP
-A INPUT -p icmp -m icmp --icmp-type 8 -m conntrack --ctstate NEW -j ACCEPT
-A INPUT -p udp -m conntrack --ctstate NEW -j UDP
-A INPUT -p tcp -m tcp --tcp-flags FIN,SYN,RST,ACK SYN -m conntrack --ctstate NEW -j TCP
-A INPUT -p udp -j REJECT --reject-with icmp-port-unreachable
-A INPUT -p tcp -j REJECT --reject-with tcp-reset
-A INPUT -j REJECT --reject-with icmp-proto-unreachable
-A TCP -p tcp -m tcp --dport 35145 -j ACCEPT
-A TCP -p tcp -m tcp --dport 80 -j ACCEPT
-A TCP -p tcp -m tcp --dport 443 -j ACCEPT
-A TCP -p tcp -m tcp --dport 53 -j ACCEPT
-A TCP -p tcp -m tcp --dport 1313 -j ACCEPT
-A UDP -p udp -m udp --dport 53 -j ACCEPT
COMMIT
# Completed on Sun Jul 12 10:32:23 2020

Code: [Select]
Chain INPUT (policy DROP 0 packets, 0 bytes)
num   pkts bytes target     prot opt in     out     source               destination         
1      654  530K ACCEPT     all  --  *      *       0.0.0.0/0            0.0.0.0/0            ctstate RELATED,ESTABLISHED
2       18  1080 ACCEPT     all  --  lo     *       0.0.0.0/0            0.0.0.0/0           
3        0     0 DROP       all  --  *      *       0.0.0.0/0            0.0.0.0/0            ctstate INVALID
4        0     0 ACCEPT     icmp --  *      *       0.0.0.0/0            0.0.0.0/0            icmptype 8 ctstate NEW
5       14  4817 UDP        udp  --  *      *       0.0.0.0/0            0.0.0.0/0            ctstate NEW
6       30  1560 TCP        tcp  --  *      *       0.0.0.0/0            0.0.0.0/0            tcp flags:0x17/0x02 ctstate NEW
7       14  4817 REJECT     udp  --  *      *       0.0.0.0/0            0.0.0.0/0            reject-with icmp-port-unreachable
8        0     0 REJECT     tcp  --  *      *       0.0.0.0/0            0.0.0.0/0            reject-with tcp-reset
9        0     0 REJECT     all  --  *      *       0.0.0.0/0            0.0.0.0/0            reject-with icmp-proto-unreachable

Chain FORWARD (policy DROP 0 packets, 0 bytes)
num   pkts bytes target     prot opt in     out     source               destination         

Chain OUTPUT (policy ACCEPT 655 packets, 154K bytes)
num   pkts bytes target     prot opt in     out     source               destination         

Chain TCP (1 references)
num   pkts bytes target     prot opt in     out     source               destination         
1        0     0 ACCEPT     tcp  --  *      *       0.0.0.0/0            0.0.0.0/0            tcp dpt:35145
2        0     0 ACCEPT     tcp  --  *      *       0.0.0.0/0            0.0.0.0/0            tcp dpt:80
3        0     0 ACCEPT     tcp  --  *      *       0.0.0.0/0            0.0.0.0/0            tcp dpt:443
4        0     0 ACCEPT     tcp  --  *      *       0.0.0.0/0            0.0.0.0/0            tcp dpt:53
5       30  1560 ACCEPT     tcp  --  *      *       0.0.0.0/0            0.0.0.0/0            tcp dpt:1313

Chain UDP (1 references)
num   pkts bytes target     prot opt in     out     source               destination         
1        0     0 ACCEPT     udp  --  *      *       0.0.0.0/0            0.0.0.0/0            udp dpt:53

Locally, i.e. on the artix web server itself, the web page preview can be viewed. I can also view it in the text-based browser elinks inside the ssh session on my remote client.

The regular apache webserver run on the system server shows webpages allright, I can see them from any client (http://192.168.2.135:80). Just why can't I remotely access the hugo test server?

Re: Cannot access hugo server from a remote computer

Reply #1 –
Hi. Maybe the server is listening only in 127.0.0.1 (Localhost) and you cannot access from other site different than server machine.

Could you execute this please?
Code: [Select]
ss -putan | grep 1313

If the server is listening only in localhost you might have to change the configuration file.

Edit: I don't knowhow you are starting the hugo service but you can try this:

Code: [Select]
hugo server --bind=192.168.2.135

Then the service will be available from any place on your network.
Artix Linux Colombia

Re: Cannot access hugo server from a remote computer

Reply #2 –
Code: [Select]
$ss -putan | grep 80
tcp   LISTEN 0      511                *:80                 *:*

I also checked port 1313 this way:

Code: [Select]
$ss -putan | grep 1313
tcp   LISTEN 0      4096       127.0.0.1:1313         0.0.0.0:*     users:(("hugo",pid=17232,fd=14))
tcp   ESTAB  0      0          127.0.0.1:1313       127.0.0.1:34998 users:(("hugo",pid=17232,fd=15))
tcp   ESTAB  0      0          127.0.0.1:34998      127.0.0.1:1313  users:(("chromium",pid=1783,fd=23))

What does this all tell us?

Re: Cannot access hugo server from a remote computer

Reply #3 –
It tells me what I suspect. The Hugo server in only listening in localhost. That's mean you can only access from your own machine.

To solve the problem you have to start the Hugo server like I said

hugo server --bind=192.168.2.135

Or you have to edit the corresponding configuration file to bind from an IP different to localhost (127.0.0.1).

I don't know anything about Hugo but there should be a configuration file for server)
Artix Linux Colombia

Re: Cannot access hugo server from a remote computer

Reply #4 –
Quote from: jrballesteros05 – on
Edit: I don't knowhow you are starting the hugo service but you can try this:

Code: [Select]
hugo server --bind=192.168.2.135

Then the service will be available from any place on your network.

You're absolutely right. I started only "hugo server" with all defaults. When I did it like you suggested, it works. Thank you very much for your quick response.