I looked through the previous posts and didn't find an answer to my problem. Hope you don't mind helping!
Issue: When attempting to telnet from one host to another on port 8080, I am getting "telnet: connect to address HostB: Connection refused". On the other hand, I can telnet to several other ports.
[root@HostA bin]# telnet HostB 8080
Trying HostB-IP...
telnet: connect to address HostB-IP: Connection refused
[root@HostB ~]# lsof -i :8080
[root@HostB ~]#
[root@HostB ~]# netstat -l | grep :8080
[root@HostB ~]#
iptables doesn't seem to be enabled or started
[root@hostB ~]# systemctl status iptables
iptables.service
Loaded: not-found (Reason: No such file or directory)
Active: inactive (dead)
[root@hostB ~]# systemctl start iptables
Failed to issue method call: Unit iptables.service failed to load: No such file or directory.
[root@hostB ~]# systemctl stop iptables
Failed to issue method call: Unit iptables.service not loaded.
[root@HostB ~]# iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
which I read was replaced by firewalld in CentOS 7(which I am using).
[root@hostB ~]# systemctl status firewalld
firewalld.service - firewalld - dynamic firewall daemon
Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled)
Active: inactive (dead)
Mar 12 17:18:53 hostB systemd[1]: Starting firewalld - dynamic firewall daemon...
Mar 12 17:18:54 hostB systemd[1]: Started firewalld - dynamic firewall daemon.
Mar 12 17:22:45 hostB systemd[1]: Stopping firewalld - dynamic firewall daemon...
Mar 12 17:22:46 hostB systemd[1]: Stopped firewalld - dynamic firewall daemon.
Hint: Some lines were ellipsized, use -l to show in full.
so it appears that both iptables and firewalld are not running, however, only some ports are opened. I've also tried adding iptable rules to accept port 8080.
[root@HostB ~]# netstat -l | grep :
tcp 0 0 0.0.0.0:ssh 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:8089 0.0.0.0:* LISTEN
tcp 0 0 localhost:smtp 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:8191 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:irdmi 0.0.0.0:* LISTEN
tcp 0 0 localhost:8065 0.0.0.0:* LISTEN
tcp6 0 0 [::]:ssh [::]:* LISTEN
tcp6 0 0 localhost:smtp [::]:* LISTEN
udp 0 0 0.0.0.0:24077 0.0.0.0:*
udp 0 0 0.0.0.0:40462 0.0.0.0:*
udp 0 0 0.0.0.0:bootpc 0.0.0.0:*
udp 0 0 0.0.0.0:ntp 0.0.0.0:*
udp 0 0 localhost:323 0.0.0.0:*
udp 0 0 0.0.0.0:mdns 0.0.0.0:*
udp6 0 0 [::]:ntp [::]:*
udp6 0 0 localhost:323 [::]:*
udp6 0 0 [::]:58833 [::]:*
raw6 0 0 [::]:ipv6-icmp [::]:*
Question - How do I determine what is allowing these ports and services besides iptables and firewalld as they appear to be disabled? Thanks!!
