Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Port blocked on router end

Posted on 2012-03-10
3
Medium Priority
?
463 Views
Last Modified: 2012-03-10
Hi guys,

Port 80 is supposedly block but not by my ISP. I confirmed with ISP that it has been open. I dont have a firewall and was wondering if my cisco 2650 router can block port 80.

See config below and let me know if anything needs to be fixed.



2650Router#sho run
Building configuration...

Current configuration:
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname 2650Router
!
enable
!
username
!
!
!
!
ip subnet-zero
ip domain-name .com
ip name-server 4.2.2.2
!
!
!
!
interface FastEthernet0/0
 description INTERNAL LAN PORT
 mac-address xxxx
 ip address 10.10.10.60 255.255.255.0
 ip nat inside
 duplex auto
 speed auto
!
interface Serial0/0
 no ip address
 shutdown
!
interface Serial0/1
 no ip address
 shutdown
!
interface Ethernet1/0
 description INTERNET LAN PORT
 ip address xxxx 255.255.255.248
 ip nat outside
!
interface Ethernet1/1
 no ip address
 shutdown
!
interface Ethernet1/2
 no ip address
 shutdown
!
interface Ethernet1/3
 no ip address
 shutdown
!
ip nat inside source list NAT-ADDRESSES interface Ethernet1/0 overload
ip nat inside source static tcp 10.10.10.90 25 interface Ethernet1/0 25
ip classless
ip route 0.0.0.0 0.0.0.0 xxxx
no ip http server
!
!
ip access-list standard NAT-ADDRESSES
 permit 10.10.0.0 0.0.255.255
 permit 10.10.10.0 0.0.0.255
 permit 10.10.20.0 0.0.0.255
!
line con 0
 exec-timeout 30 0
 password
 logging synchronous
 login local
 transport input none
line aux 0
line vty 0 4
 exec-timeout 30 0
 password
 logging synchronous
 login local
!
no scheduler allocate
end


Do I have to do a NAT? If so, what is the cmd.

Thanks
0
Comment
Question by:vmagan
3 Comments
 
LVL 34

Accepted Solution

by:
Istvan Kalmar earned 2000 total points
ID: 37705488
Hi,

you need:

ip nat inside source static tcp 10.10.10.90 80 interface Ethernet1/0 80
0
 
LVL 26

Expert Comment

by:akahan
ID: 37705879
Your router blocks unsolicited packets on EVERY port, unless you specifically open them.
0
 
LVL 6

Author Closing Comment

by:vmagan
ID: 37706056
That did it. Thanks
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The Cisco RV042 router is a popular small network interfacing device that is often used as an internet gateway. Network administrators need to get at the management interface to make settings, change passwords, etc. This access is generally done usi…
I recently attended Cisco Live! in Las Vegas, a conference that boasted over 28,000 techies in attendance, and a week of hands-on learning hosted by a solid partner with which Concerto goes to market.  Every year, Cisco displays cutting-edge technol…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

824 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question