[uylug-varios] Problema raro de conexion entre dos maquinas
Enrique Verdes
emverdes at ieee.org
Fri Apr 29 11:42:03 PDT 2016
Mandá la salida del comando sestatus
2016-04-29 15:19 GMT-03:00 Kenneth Irving <ken at fq.edu.uy>:
> ¿No será alguna restricción de SELinux?
>
> saludos
>
> Kenneth
>
>
> On Fri, 29 Apr 2016, Dante Castiglione M. wrote:
>
>
>> Muchas gracias por sus amables respuestas.
>>
>> ------------------------------------
>> 1. telnet
>> ------------------------------------
>>
>> Hice el telnet correctamente desde el CentOS cliente, el resultado no
>> cambia
>>
>> [usuario at cliente ~]$ telnet 192.168.1.43 5432
>> Trying 192.168.1.43...
>> telnet: connect to address 192.168.1.43: No route to host
>>
>> Por si acaso lo repeti desde el cliente en Ubuntu, hace lo mismo
>>
>> usuario at cliente:~$ telnet 192.168.1.43 5432
>> Trying 192.168.1.43...
>> telnet: Unable to connect to remote host: No route to host
>>
>>
>> ------------------------------------
>> 2. server
>> ------------------------------------
>>
>> ifconfig del server
>>
>> [usuario at server ~]# ifconfig
>> lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
>> inet 127.0.0.1 netmask 255.0.0.0
>> inet6 ::1 prefixlen 128 scopeid 0x10<host>
>> loop txqueuelen 0 (Local Loopback)
>> RX packets 756 bytes 127594 (124.6 KiB)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 756 bytes 127594 (124.6 KiB)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> p1p1: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
>> ether 20:47:47:3c:5b:bd txqueuelen 1000 (Ethernet)
>> RX packets 0 bytes 0 (0.0 B)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 0 bytes 0 (0.0 B)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
>> inet 192.168.122.1 netmask 255.255.255.0 broadcast
>> 192.168.122.255
>> ether 52:54:00:a4:bc:6e txqueuelen 0 (Ethernet)
>> RX packets 0 bytes 0 (0.0 B)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 0 bytes 0 (0.0 B)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> wlp6s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
>> inet 192.168.1.43 netmask 255.255.255.0 broadcast 192.168.1.255
>> inet6 fe80::1a4f:32ff:feca:297d prefixlen 64 scopeid 0x20<link>
>> ether 18:4f:32:ca:29:7d txqueuelen 1000 (Ethernet)
>> RX packets 12450 bytes 8049799 (7.6 MiB)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 7794 bytes 1254229 (1.1 MiB)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>>
>> ip tables del server
>>
>> [usuario at server ~]# service iptables status
>> Redirecting to /bin/systemctl status iptables.service
>> ● iptables.service
>> Loaded: not-found (Reason: No such file or directory)
>> Active: inactive (dead)
>>
>>
>> ------------------------------------
>> 3. cliente
>> ------------------------------------
>>
>> ifconfig del ciente
>>
>> [usuario at cliente ~]$ ifconfig
>> enp9s0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
>> ether a4:ba:db:b7:0b:08 txqueuelen 1000 (Ethernet)
>> RX packets 0 bytes 0 (0.0 B)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 0 bytes 0 (0.0 B)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>> device interrupt 18
>>
>> lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
>> inet 127.0.0.1 netmask 255.0.0.0
>> inet6 ::1 prefixlen 128 scopeid 0x10<host>
>> loop txqueuelen 0 (Local Loopback)
>> RX packets 10 bytes 756 (756.0 B)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 10 bytes 756 (756.0 B)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
>> inet 192.168.122.1 netmask 255.255.255.0 broadcast
>> 192.168.122.255
>> ether 52:54:00:53:ac:c9 txqueuelen 0 (Ethernet)
>> RX packets 0 bytes 0 (0.0 B)
>> RX errors 0 dropped 0 overruns 0 frame 0
>> TX packets 0 bytes 0 (0.0 B)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>>
>> wlp12s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
>> inet 192.168.1.42 netmask 255.255.255.0 broadcast 192.168.1.255
>> inet6 fe80::e60:76ff:fe2f:29d9 prefixlen 64 scopeid 0x20<link>
>> ether 0c:60:76:2f:29:d9 txqueuelen 1000 (Ethernet)
>> RX packets 18 bytes 2027 (1.9 KiB)
>> RX errors 0 dropped 0 overruns 0 frame 20284
>> TX packets 42 bytes 5704 (5.5 KiB)
>> TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
>> device interrupt 17 base 0xc000
>>
>>
>> iptables del cliente
>>
>> [usuario at cliente ~]# service iptables status
>> Redirecting to /bin/systemctl status iptables.service
>> ● iptables.service
>> Loaded: not-found (Reason: No such file or directory)
>> Active: inactive (dead)
>>
>>
>> ------------------------------------
>> 4. netstat y nap
>> ------------------------------------
>>
>> netstat en el server, muestra el puerto 5432 abierto, no se si
>> correctamente
>>
>> [usuario at server ~]# netstat -nltp | grep 5432
>> tcp 0 0 0.0.0.0:5432 0.0.0.0:*
>> LISTEN 6642/postgres
>> tcp6 0 0 :::5432 :::*
>> LISTEN 6642/postgres
>>
>>
>>
>> nmap desde el cliente, aca parece haber algo raro porque ve otros puertos
>> pero no el 5432
>>
>> [usuario at cliente ~]# nmap 192.168.1.43
>>
>> Starting Nmap 6.40 ( http://nmap.org ) at 2016-04-29 14:48 UYT
>> Nmap scan report for mdw.southx.io (192.168.1.43)
>> Host is up (0.018s latency).
>> Not shown: 997 filtered ports
>> PORT STATE SERVICE
>> 22/tcp open ssh
>> 139/tcp closed netbios-ssn
>> 445/tcp closed microsoft-ds
>> MAC Address: 18:4F:32:CA:29:7D (Unknown)
>>
>> Nmap done: 1 IP address (1 host up) scanned in 6.83 seconds
>>
>>
>> ------------------------------------
>>
>> No entiendo porque no lo ve si el nmap lo muestra abierto
>> Podra ser porque esta con 0.0.0.0 y no especificamente con 192.168.1.43
>> ???
>>
>> Desde ya muchas gracias
>>
>> ------------------------------------
>>
>>
>>
>> ---------------------------------------------
>>
>> SouthX
>> https://southx.io
>> BigData
>>
>> Digicoins
>> https://digicoins.cash
>> Bitcoin
>>
>> Dante Castiglione Maldonado
>> dac.maldonado at gmail.com
>>
>> ---------------------------------------------
>>
>>
>> On 29 April 2016 at 11:08, Eduardo Trápani <etrapani at gmail.com> wrote:
>>
>> > Tengo dos maquinas en la wifi, las dos con CentOS 7
>> > 192.168.1.43 (DB server) y 192.168.1.42 (DB client)
>> >
>> > ping responde bien en ambos sentidos
>> > en ambas maquinas iptables service dice inactive (dead)
>>
>> ¿Podés pegar la salida de ifconfig en ambos equipos?
>>
>> Eduardo.
>> _______________________________________________
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>>
>>
>>
>>
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--
Enrique M. Verdes
<https://uy.linkedin.com/pub/enrique-verdes/1/794/ba8>
"As we enjoy great advantages from the inventions of others, we should be
glad of an opportunity to serve others by any invention of ours; and this
we should do freely and generously."
Benjamin Franklin
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