I can ping external IPs, but cannot browse Internet on Cisco 897VA sites

I have a cisco 897va router I use a laboratory. I have a very basic config and am able to ping Web sites but for some reason any cannot browse one of them while connected to this router. The way it is currently Setup is port Gigabit 8 (WAN port) is connected to one of the switchports on my linksys router (connected to the cable modem), and I have a computer connected to the switchport Gigabit router 897VA Ccisco 0. Interface Vlan 1 is configured as my default gateway with the ip address of 192.168.1.1/24. I have a pool dhcp with the implemented network 192.168.1.0/24 which clients receive the ip configuration.  I'd appreciate any advice someone here can provide. Here is my config. I took off with a default interfaces (no) configurations in them for ease of reading:

C897VA #show run

Building configuration...

Current configuration: 1985 bytes

!

! 19:14:01 EST configuration was last modified Sunday, December 1, 2013

! NVRAM config update at 19:14:06 EST Sunday, December 1, 2013

! NVRAM config update at 19:14:06 EST Sunday, December 1, 2013

version 15.2

tcp KeepAlive-component snap-in service

a tcp-KeepAlive-quick service

horodateurs service debug datetime msec

Log service timestamps datetime msec

no password encryption service

sequence numbers service

!

hostname C897VA

!

boot-start-marker

boot-end-marker

!

!

!

No aaa new-model

clock timezone IS - 5 0

Crypto pki token removal timeout default 0

!

!

no ip source route

the 5 IP auth-proxy max-login-attempts

max-login-attempts of the IP 5 admission

!

!

!

IP dhcp excluded-address 192.168.1.0 192.168.1.5

!

IP dhcp INTERNAL pool

import all

network 192.168.1.0 255.255.255.0

default router 192.168.1.1

domain cedanolab.com

Server DNS 8.8.8.8 4.2.2.2 4.2.2.3

!

!

8.8.8.8 IP name-server

IP cef

!

!

udi pid C897VA-M-K9 sn license *.

!

!

!

VDSL controller 0

!

!

!

ATM0 interface

no ip address

No atm ilmi-keepalive

!

interface Ethernet0

no ip address

!

interface GigabitEthernet0

no ip address

!

!

interface GigabitEthernet8

DHCP IP address

NAT outside IP

IP virtual-reassembly in

automatic duplex

automatic speed

!

interface Vlan1

IP 192.168.1.1 255.255.255.0

no ip redirection

no ip proxy-arp

IP nat inside

IP virtual-reassembly in

!

IP forward-Protocol ND

no ip address of the http server

no ip http secure server

!

the IP nat inside source 1 list overload of the GigabitEthernet8 interface

!

access-list 1 permit 192.168.1.0 0.0.0.255

!

!

Line con 0

Synchronous recording

line to 0

line vty 0 4

opening of session

transport of entry all

!

Scheduler allocate 20000 1000

!

end

C897VA #.

Thank you in advance.

Jeremias,

If I understand you correctly, the PC connected to the Cisco router can resolve names to IP addresses and is able to ping outside the destination, but you can not browse the internet. Is this correct?

I think an MTU problem. Even if your router connects Ethernet segments only, there may be an additional encapsulation somewhere along the way, by adding an extra burden to your packages and possibly causing them to become oversized. Can you try to add the ip tcp adjust-mss 1360 to your interface Vlan1 please and test connectivity again?

Also, what exact IP address you receive via DHCP on your GigabitEthernet8 interface? Ideally, can you like after the output of the show ip route and show ip cef between your Cisco router? Also, please include the output of commands show ip cef 8.8.8.8 detail .

Best regards

Peter

Tags: Cisco Network

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