Cisco WAN :: 1841 NAT - Router Cannot Host On Internet
Mar 13, 2011
I have an issue with NAT on a Cisco 1841. See following configuration,
interface FastEthernet0/0 description Connection to LAN bandwidth 100000 ip address 10.90.0.100 255.255.0.0 ip helper-address 10.100.2.2 ip helper-address 10.100.2.3 ip load-sharing per-packet ip nbar protocol-discovery ip nat inside ip virtual-reassembly duplex auto speed auto
interface Dialer1 description ADSL connection bandwidth 448 ip address X.X.X.X 255.255.255.248 ip access-group 150 in ip nat outside ip inspect firewall out ip virtual-reassembly encapsulation ppp dialer pool 1 dialer-group 1 no cdp enable ppp authentication chap pap callin ppp chap hostname hostname ppp chap password password ppp pap sent-username hostname password password crypto map vpn
ip nat inside source list 102 interface Dialer1 overload(code )
I've tried this with both a source list NAT statement, and a route-map. The router can contact hosts on the Internet:
Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 128.31.0.51, timeout is 2 seconds:!!!!!Success rate is 100 percent (5/5), round-trip min/avg/max = 144/147/148 ms
View 21 Replies
ADVERTISEMENT
Dec 11, 2012
i am using a Cisco 1841 with subinterfaces instead (NAT on a stick).From the internet i can access services on public IP being hosted in LAN2. But when i try to access the same services on the same public IPs but sitting on LAN1, it does not work.
View 1 Replies
View Related
Dec 11, 2012
i am using a Cisco 1841 with subinterfaces instead (NAT on a stick).From the internet i can access services on public IP being hosted in LAN2. But when i try to access the same services on the same public IPs but sitting on LAN1, it does not work.
View 3 Replies
View Related
Jan 16, 2012
I used the GRE tunnel site to site VPN with 2 cisco 1841 routers. Behind one of the router R1, I used cisco ASA 5510, now my vpn is connect between two routers, but from R2 other site cannot access to LAN behind the firewall. From R1, also cannot route to local network, from local network can access to R1, I think cause of NAT . So how to configure to route internal network from R1 & R2 with VPN.
View 5 Replies
View Related
Jan 6, 2012
I have the following devices for our IT Test LAB
1. Cisco 1841 with 2 Fast Ethernet interfaces fa0/0 & fa0/1
2. Cisco 2960-S
3. Speedstream 6200 DSL Modem ( PPOE Connection with Static IP address)
I want to connect to the internet using the current DSL connection we currently have .
LAPTOP --> SWITCH 2960 --> ROUTER 1841 ---> DSL Modem ---> ISP
Troubleshooting 1: Currently from the LAPTOP i am able to ping
1. Switch 2960 Vlan interfaces
2. Router 1841 fa0/0 & fa0/1
BUT can not Ping the DSL Modem LAN interface IP 192.168.2.1 and can not get out to the INTERNET
Troubleshooting 2:currently from the Switch 2960 i can ping
1. All the Vlan interfaces on the Switch 2960
2. Router 1841 fa0/0 & fa0/1 interfaces
3. Laptop A & B
But can NOT ping the DSL modem LAN interface IP 192.168.2.1 and can not get out to the internet
Troubleshooting 3:Currently from the Cisco 1841 router i can ping
1. All the Vlan interfaces on the Switch 2960
2. Router 1841 fa0/0 & fa0/1
3. Laptop A & Laptop B
4. Can Get out to the internet. I am able to ping any internet destinations without any problem
View 10 Replies
View Related
Nov 2, 2011
I want to know is it possible to check Internet speed directly in the cisco router thru any command or activating any service in the cisco router?.As it is seen most of the times internet speed offer by ISP is different as compared to clients.and Clients most oftenly not satisfied with internet speed The problem is that our ISP has given us 100MB leaased line.But when we deployed in production network the speed is same as DSL.We have reported this issue to ISP they then carried out Iperf test by connecting laptop directly with the ISP router.They have tested the speed and it shows about 94-96 Mbps and argu that it is up to the mark and there is problem at your side(i.e our internal network).Now our internal network has cisco 1841 router connected directly to ISP 3825 cisco router.Our router has minimum configuration as required to pass traffic out and in.Our internal 1841 router is connected to switch to which different clients are connected.We have performed some online tests using different speed checking websites and also perform real time tests by uploading and downloading files.The speed is much low as compared to 100Mbps and it is nearly or slightly higher then as DSL connection. how can we check internet speed in the specified scenario?Is there any command or service available in cisco router to check internet speed as we want to check ISP connection speed directly thru 1841 router?what about authenticity of online speed checking websites?Any specialize software/tool you recommend to check Internet speed in specified scenario?
View 11 Replies
View Related
Jun 27, 2011
I have a host that can successfully connect to a PIX 515E (7.x OS) via VPN Client; however, I have no IP routing to the LAN from the remote host.The VPN IP pool works finem,The LAN default gateway is the inside interface on the PIX; the network is flat L2 behind it.The default route on the PIX points out; no other routes are defined,The VPN remote host can be pinged from LAN hosts, but the VPN remote host cannot ping any LAN host, not even the PIX inside interface.
View 2 Replies
View Related
May 7, 2012
ASA 5510
Ver 8.2(5)
I have been looking all over the place for the answer of how to allow clients on an IPSEC VPN to ping from host to host.
View 4 Replies
View Related
Feb 10, 2011
I'm just wondering if its possible to ping an IPv4 host using the IPv6 host assuming that the NAT64 has already been implemented?
[code]...
View 2 Replies
View Related
Jul 15, 2012
I've got an 1841 router acting as the firewall for a LAN. It also does NAT and acts as the dialer for a PPPoE DSL line to the internet.
All is working fine, except now I need to allow a Tivo device to connect to certain ports on the Tivo servers on the internet. I want only the Tivo to be able to do this. The problem is that NAT is happening before my outbound ACL is checked, so even though I've got rules to allow the Tivo's LAN address out on all ports, it never works. I've verified this using a syslog server, and can see my external DSL IP trying to connect to the Tivo servers and being denied.
I've done things like this at work by NATting the appropriate internal host to its own external static IP address, which allows me to write rules allowing only that external address to do stuff. But I don't have multiple external addresses to work with here.
I tried applying my outbound ACL to the LAN interface of the router in the "in" direction (and removing the same ACL from the Dialer interface in the "out" direction), but that broke other things like the router's own ability to ping out to the LAN or to see a TFTP server on the LAN. I could maybe fix all of that with rule changes and inspect statements on traffic going out toward the LAN (not sure of this, think so), but I'm wondering:
Is there a better way to let just the Tivo makes outgoing connections to certain ports?
Config pasted below:
!
! Last configuration change at 17:15:10 CDT Sun Jul 15 2012
! NVRAM config last updated at 16:27:14 CDT Sun Jul 15 2012 by someguy
!
[Code].....
View 3 Replies
View Related
Feb 2, 2011
Running a Windows 7 laptop plugged into a LAN using ethernet cable with internet.The built-in wireless nic on the laptop connects to a totally different internet network. I set up an XP Mode Virtual PC on the laptop with the intention that it would use the wireless internet connection.I set this up by installing Microsoft Loopback Adapter, then sharing the wireless nic to it. The Virtual PC is set to use the Microsoft Loopback Adapter as its network connection.My problem is that only the hard wired internet connection works.The wireless is connected and has an ip address, however no traffic flows through it until i either disable the cabled network or physcially unplug the cable. Is it possible to have my host laptop use the cabled internet connection and my virtual pc use the 2nd wireless internet?
View 1 Replies
View Related
Mar 5, 2012
I have a VMware workstation on my host computer (windows 7) and the VMware workstation has a virtual machine (windows 7) on the host. We were trying to allow internet access only to the Virtual machine, i.e. to minimize exposure of the host to the internet. I tried to use Vlan Access Control list with MAC ACL to deny the host virtual machine from accessing the internet and allow all other traffic including the virtual machine. The configuration works for some time and after some time when the virtual machine continously pings the c3750 switch (wher the VACL is implemented), the host also pings the c3750 switch and re-establishes connection with the internet. But when we configured the c3750 switch to deny the VM and allow all other traffic, it works fine. It seems like the host automatically finds a way to get arround the VACL.
View 0 Replies
View Related
May 22, 2011
At work my desktop pc is a Novell client with WinXP. I wanted to use it a an ics host so I'd be able to connect my laptop to it with a cross wire so both computers could surf simultaneously using one source connection.I should probably note that I only have user privileges on my desktop and no admin privileges on it. It is my workplace policy so people don't install software that might end up being malicious.We also have Wifi at work but my at my office I have a low signal (1-2 bars) so I can disconnect my desktop, copy it's MAC address to my laptop and surf with my laptop instead. However, I need both computers, the desktop for work and PC for personal use.
View 1 Replies
View Related
May 11, 2012
My internet connection started to disconnect after an office mate used my PC. I thought it was just the cables but it's not. I pinged my ip address and its okay (sent=4; received=4). But when i ping Yahoo! and other websites, it said that "Destination host unreachable" (sent=4;received=0;lost=4;100% loss). What should I do to make my connection okay? I didn't ask assistance from our IT personnel bcoz they said if i want to reconnect/reinstall connection, I have to get an approved request from our bosses. And I don't like being asked bcoz they are like tyrant bosses.
View 2 Replies
View Related
Apr 24, 2011
I'm working on setting up a new ASA 5550, and have run into a question that I hope is easily answered.I currently have 4 interfaces, SL100 Inside, SL80 DMZ1, SL50 DMZ2, and SL0 Outside. I was under the impression that each interface, depending on security level would pass traffic from higher levels to lower, but not allow traffic being generated from SL80 to SL100.
What I would like to accomplish is that any hosts on my SL100 Inside interface can access the "internet" which is connected to my outside interface of the ASA, which was very simple, just a permit internal subnets eq www / https / etc...
My DMZ subnets need to access a few servers on my internal interface, and need outbound access to the world as well. Thinking that all traffic from my lower SL interfaces on the ASA would be denied, I entered a permit IP / DMZ subnet ------> any. This worked great for giving my DMZ hosts access to the internet, but it also permit traffic from the DMZ to hosts on my Inside interface as well.
View 2 Replies
View Related
Jan 5, 2012
On a 2821 Router with 15.1(3)T1
I have an IPSec VPN and NAT configured. Return traffic from an internal NAT host seems to be blocked by the WAN inbound ACL. What is the proper way to allow return traffic from the Internet for this internat NAT host? Note: As a test, removing the deny entry on the WAN ACL allows return traffic.
View 7 Replies
View Related
Mar 23, 2011
I am trying to open up certain ports to host multiplayer games on the internet on my computer and on Xbox 360.The only internet service provider is primecast. I am able to open the ports on my router but the ports still show closed using portforward.com portchecker. I disabled all firewalls and Anti-Virus, no luck. I even connected my computer directly to the modem, the ports are still closed. The Router is a Linksys WRT400N set to single band. The modem is an Alcatel although there is no model number (it has a fiber optic connection, coax connection and 2 ethernet port connections). The condo is cat 5 ready so the router has multiple ethernet cables which go to the ethernet wall plugs throughout the apartment which is how I connect to my desktop.
FYI:One of the games I am trying to play online IL2 1946, people simply cannot connect.In another game Company of Heroes, people cannot connect and I cannot connect to most games it says there is a NAT issue when connecting.
PS When I go into ipconfig I now see IPv4 and IPv6, I don't know if that has something to do with it but to my knowledge these sections were not here previously (before I moved).
Win 7 x64
Intel I5 750 1186
12 GB Ram
1.5 Tb HDD in Raid Striping
ATI Radeon HD 5770
View 18 Replies
View Related
Jan 17, 2013
we have a cisco ASA 5505 and are trying to get the following working:
vpn client (ip 192.168.75.5) - connected to Cisco ASA 5505
the client gets a specific route for an internet address (79.143.218.35 255.255.255.255 192.168.75.1 192.168.75.5 100) when i try to access the url from the client i get a syn sent with netstat when i try the packet tracer from the ASA i see the following:
<Phase>
<id>1</id>
<type>FLOW-LOOKUP</type>
<subtype></subtype>
<result>ALLOW</result>
[code].....
View 5 Replies
View Related
Jan 12, 2011
I need to allow only a few Internet websites from Cisco 1841 Router for my LAN users. What Access-List should be used for this.
View 4 Replies
View Related
Mar 31, 2013
My lease router 1841 is not going behind the Juniper Firewall. i am able to ping and telnet my Juniper firewall, but when i try to ping dns server 4.2.2.2 or any other website it gives me no reply.
Below is the configuration of my Router.
212.50.100.16 ( Juniper Firewall IP)
Router-1841>enPassword:Router-1841#ping 212.50.100.16
Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 212.50.100.16, timeout is 2 seconds:.!!!!Success rate is 80 percent (4/5), round-trip min/avg/max =
[Code].....
View 1 Replies
View Related
Apr 28, 2013
I have a branch office connected to the Head Office through a VPN Tunnel in cisco 1841 Router. If i enable Internet for any pc in Branch Office through cisco router i cannot access it remotely from Head Office. [code]
View 2 Replies
View Related
Aug 4, 2011
As per topology attached herewith, i have 2 ISPs, ISP1 and ISP2. And i have one Cisco 1841 Router with only 2 Ethernet interfaces.My Lan subnet is 192.168.1.0.My puspose is, i want to configure both ISP1 and ISP2 and my Lan Network on router, without adding any extra interaface. I also want to configure a nat so that Lan user can go to internet. I wabt to do this using 2 Interfaces.
View 17 Replies
View Related
Apr 6, 2011
I have configured a Cisco router. I am able to ping google from rotuer. I can ping my local IP from router and router local IP to my machine. But I can not access internet on machine. I can not ping google and any other IP out of network.
View 11 Replies
View Related
Apr 27, 2012
I have a Cisco 1841 router that is connected to a switch. I have WAN/LAN configured on the router and the switch is handing out internal IP's. The issus that none of the client machines can access the Internet. From within the router console, I am able to ping external domain names, my ISP DNS servers.
Once the client machines picks up an IP they are unable to ping any external domain names or IP's and not even the ISP DNS servers, but they can ping the Cisco router IP. As a note I have tried my ISP DNS servers and as a test Google's DNS servers, but neither will allow access to the Internet.
Below is the current running config:
Building configuration...
Current configuration : 1440 bytes
!
version 12.4
service timestamps debug datetime msec
[Code].....
View 26 Replies
View Related
Aug 2, 2012
I am in trouble with my cisco 1841 configuration.The "what I want to" schema: very external IP ( AAA.AAA.AAA.AAA ) in the internet cloud => | cisco 1841 external IP BBB.BBB.BBB.BBB | => internal computer IP CCC.CCC.CCC.CCC
View 1 Replies
View Related
Aug 1, 2012
I am in trouble with my cisco 1841 configuration. The "what I want to schema":very external IP ( AAA.AAA.AAA.AAA ) in the internet cloud => | cisco 1841 external IP BBB.BBB.BBB.BBB | => internal computer IP CCC.CCC.CCC.CCC
Steps (this what I think should be done):
1. Find all packets from A by acl
2. Route finded packets throught cisco1841 directly to internal ip address
It should be easy but it doesn't.
View 2 Replies
View Related
Feb 24, 2011
I'm unable to connect to the internet?My university gave us student permission toset up a cisco lab. I hve an 1841 router and a 2950 catalyst switch in a single room. Fa0/1 is conncted to the switch using a 192.168.3.0 /24 network. DHCP is correctly assaigning ip addresses to the switch.
I connected the Fa0/0 port to the wall and used the following command to obtain an ip on the Fa0/0 port: ip adress dhcp. I used the following route command: ip route dhcp. That didn't work so I used the ip route 0.0.0.0 0.0.0.0 Fa0/0.When I run the sh cdp neighbors command I see a multilayer switch that show me connected to the Ga2/26 port with ip:192.168.179.254.I also see that the default vlan is 200 and the voice vlan is 800.
A linksys router is about to let us access the internet. I am able to ping the 192.168.179.254 address from the 1841 router.What am I missing to connect to the internet.I forgot to mention that I successfully receive an ip from the wall. The latest ip I received was 192.168.179.100 /24.
View 24 Replies
View Related
Oct 31, 2012
i have router 1841 have 2 interface.i make routing between vlan by subinterface in router and in switch trunk but vlan 5 cannot access internet
View 3 Replies
View Related
Jun 10, 2011
I configure for our office site to site VPN project. Now I configured already Site to site vpn between ASA 5510 and 1841 router.
HQ LAN
Branch LAN 10.2.1.0/24 >>> ASA 5510>>>>> 1841 >>> INTERNET <<<<<< 1841 <<<<<< 10.30.3.0/24 ^^^^ Call Manager 2851
Now can access from Branch LAN to HQ LAN each other. I face the problems that are
1) In branch LAN , they can access HQ LAN & resource , but cannot access internet. I didn't configure NAT on PH Router
2) Can I access internet from BRANCH LAN through HQ LAN to INTERNET. Or Can I access Internet from Branch LAN from PH Router directly while access to VPN to HQ LAN ?
3) In Branch Site , hard phone cannot work but soft phone on PC can call to HQ. Hard phone IP are same in Remote Network (172.16.1.0/24 ) . Is it problem ? how can I configure separately ?
View 2 Replies
View Related
Mar 11, 2010
We have 2mbps leased line and have Cisco 1841 which is managed by our ISP. I have hooked up another 1841 (please find basic config below, it will get more complex lateron) Now when I connect my laptop I am able to browse Internet. But when I conect VOIP phone, it is not able to contact it's Hosted Server on Internet.
VOIP phone is Polycom SoundPoint 550 and I get URL call disabed message. If I try netgear Firewall everything seems to work.that the voip provider needs following ports UDP Range 16384 - 32766, TCP 5060 & UDP 5060. But in my config all outbound traffic is allowed. [code]
View 6 Replies
View Related
May 6, 2013
i have set up a layer 2 tunnel on my 887va router and the traffic transmits accross this to my second 887va. unfortunately, I do not seem able to get the layer 2 traffic from my host PC and down the tunnel.
I believe the problem to be the router settings for the fastethernet aqnd forwarding this data out of the dialer port.
Here is my config:
Building configuration...
Current configuration : 3973 bytes
!
! Last configuration change at 13:03:15 UTC Thu May 2 2013
[Code].....
View 6 Replies
View Related
Feb 19, 2013
I am just confused over the fact that a router configured with 10.1.1.1 address (assuming it's got 255.255.255.0 mask) can communicate to a PC connected to one of it's LAN ports and manually setup to have 10.1.1.2/8 address. I was sure that since these are two different subnets they won't see each other. But they do and searched wiki and just googled to see why, but with no success. A friend of my friend says something about 'same range' but it makes little sense to me.
I just need a good article about it or a crystall clear explanation, because I feel my understanding of IP is not as good as I used to believe.
View 5 Replies
View Related
Nov 9, 2011
I have new TP_LINK router, Model No. TL-WR1043N / TL-WR1043ND
And Its working fine most of the time but my problem or question is this, I play the WII online and its wireless through the router.I have a friend that is local in my town and we try to play online and it will never let us team up, and if we try it never lets us assign a host. I can play otherwise when i connect and search for a game in progress but if I send him an invite it will not let us team up and either host a game or join a game.
Ive done some research and Ive went in and add my WIIS MAC address into the DHCP and assigned it an IP address in the router and the WII, and it worked at first, we finally were able to join into a game on the same team, but its still not letting one of us host or, it keeps telling us unable to locate a host. Im wondering if I should put his MAC address in my DHCP and assign him a IP address?
View 4 Replies
View Related
