Introduction
Este documento descreve as portas TCP e UDP que a plataforma Cisco CGR2010 usa para aplicativos e comunicações de intranet.
Portas padrão
O Cisco CGR2010 tem essas portas habilitadas por padrão:
Router#show control-plane host open-ports
Active internet connections (servers and established)
Prot Local Address Foreign Address Service State
tcp *:23 *:0 Telnet LISTEN
Router#
Caso o SSH esteja ativado no roteador, a porta 22 está aberta no CGR 2010:
Router#show control-plane host open-ports
Active internet connections (servers and established)
Prot Local Address Foreign Address Service State
tcp *:22 *:0 SSH-Server LISTEN
tcp *:23 *:0 Telnet LISTEN
Use o Nmap para verificar as portas que estão habilitadas no roteador.
C:\Program Files (x86)\Nmap>nmap -sS -p1-10000 10.31.126.137
Starting Nmap 7.70 ( https://nmap.org ) at 2018-12-06 20:05 Central Standard Time (Mexico)
Nmap scan report for 10.31.126.137
Host is up (0.0054s latency).
Not shown: 9998 closed ports
PORT STATE SERVICE
22/tcp open ssh
23/tcp open telnet
Nmap done: 1 IP address (1 host up) scanned in 14.23 seconds
C:\Program Files (x86)\Nmap>
Quando um módulo de switch é instalado no CGR2010, o roteador abre as portas 2003, 4003, 6003 e 9003. Dê uma olhada na mesa.
C:\Program Files (x86)\Nmap>nmap -sS -p1-10000 10.31.126.137
Starting Nmap 7.70 ( https://nmap.org ) at 2018-12-06 20:22 Central Standard Time (Mexico)
Nmap scan report for 10.31.126.137
Host is up (0.0067s latency).
Not shown: 9994 closed ports
PORT STATE SERVICE
22/tcp open ssh
23/tcp open telnet
2003/tcp open finger
4003/tcp open pxc-splr-ft
6003/tcp open X11:3
9003/tcp open unknown
Nmap done: 1 IP address (1 host up) scanned in 12.54 seconds
C:\Program Files (x86)\Nmap>
Tabela de serviços de porta reversa
| Nome do serviço |
Intervalo de portas reservadas |
| Telnet normal |
2000-2xxx |
| TCP bruto |
4000-4xxx |
| Modo binário Telnet |
6000-6xxx |
| Xremote inverso |
9000-9xxx |
Este comportamento é abordado nos CDETS: https://bst.cloudapps.cisco.com/bugsearch/bug/CSCsh95539
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