Cisco Switching/Routing :: 1841 - Access To Web Server On Outside Address From LAN
Jan 22, 2012
I have a 1841 deployed as my NAT device towards internet. NAT is setup so that internal addresses can access WWW. I also have some NAT translations opening speciic ports from outside to inside in the form: ip nat inside source static tcp A.B.C.D 443 A.B.C.D 443 extendable.
Now have an outside address/port setup with a public DNS reference and using NAT from outside to get access to the corresponding inside address. It works when being outside the LAN.
Now to the problem: From the LAN side of the router - i cannot access the public name. I can ping it - but my browser dont find the webserver behind the name. Someone told me it should be setup as "local firewall domain" - and i should set this up as "source NAT".
View 12 Replies
ADVERTISEMENT
Sep 4, 2012
I am using cisco 1841 LAN router, I need to block MAC address i have applied the command access-list 1102 deny 0000.0000.0000.0000 mac address..... but it does not work.
View 24 Replies
View Related
Oct 16, 2012
Today when we run one applcation to access a target server with IP address 10.2.2.13, the application cannot run through and appearing error message related networking.The target server has two network ports whereby another one with IP 10.2.2.14 is running OK with the same application. All these two connections are connected to the same Cisco switch 3750, after the switch then go to Cisco ASA firewall which has no access control rule for this 10.2.2.13 and its subnet, and then the firewall connect directly to the application server.We can ping, remote desktop access and telent port for the application to the target server by using 10.2.2.13.We swapped the cable connection of the ports from one another and try the application again, the IP with 10.2.2.13 is still fail and IP with 10.2.2.14 is OK.We then change the IP from 10.2.2.13 to 10.2.2.12 or 10.2.2.155, all are OK. We changed back to 10.2.2.13, it is failed again.The switch is in running real time production and so we cannot power cycle or reload the switch.
View 9 Replies
View Related
Dec 5, 2012
I have not yet completed my CCNA, however I have managed to configure a 1841 router with 1 x HWIC-ADSL1 and it also has 1 x HWIC-AG-AP-A which is the only part I am unable to get working.
The Wi-Fi (Dot11Radio) config has enabled me to see the SSID from wireless devices, but they never get an IP address. I need them to get the same IP range as the DHCP service I have in there 203.35.10.xxx, there is no option for "IP ADDRESS DHCP" only "IP ADDRESS POOL LAN" Lan is of course my DHCP pool name. however I cannot have the same DHCP pool on both Dot11Radio interfaces.
I know I'm missing one very simple command, but as I've never worked with Radio on Cisco equipment, I am unsure how to fix it.
Then once I get that worked out, I need changing the access from OPEN to WPA or WPA2, etc..
IOS Software on Router is C1841-ADVSECURITYK9-M - Version 12.4(9) T
I can upgrade to a better version of software if needed, I only have a 32mb Flash and 128Mb Ram.
The current Radio Config is:
!
interface Dot11Radio0/1/0
no ip address
no ip redirects
[Code]....
View 1 Replies
View Related
Aug 26, 2012
Our company has a Cisco 1841 router which provides our connection to the outside world. We also have a windows server which provides our DHCP and DNS services. Our workstations which also get their lease from the server (using DHCP) do have a connection to the outside world.
when we connect a new computer or other device to the network we can only ping as far as the inside interface of the router. But when we assign the ip settings staticly we do get a connection, even if we configure it with the exact same ip as a lease it got a few seconds ago.
[code]...
View 21 Replies
View Related
Dec 15, 2012
I am using Solawinds syslog and trying to get our Cisco routers send syslogs to our syslog server. I followed the procedure on Configuring Cisco Devices to Use a Syslog Server from [URL] Our Cisco swtches are all sending syslog messages but not the routers. I compared the config with our access switches but can't seem to find the problem:
Sample router config:
service nagleno service padservice tcp-keepalives-inservice tcp-keepalives-outservice timestamps debug datetime msec localtime show-timezoneservice timestamps log datetime msec localtime show-timezoneservice password-encryption!hostname WWF-RT1boot-start-markerboot-end-marker!security authentication failure rate 10 logsecurity passwords min-length 8logging buffered 4096logging rate-limit all 10logging console critical!aaa new-model!!
[Code] .......
is there a command that prevents the router from sending the syslog to the server?
View 2 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
Sep 9, 2012
I have restricted access to users using TCP/IP using cisco 1841 router in my organization.
I need to permit some sites for users which are part of work..
The issue here is I cannot ping to the site but able to browse to that site when having internet access, i have permitted range the entire range of that IP's but still no luck..
url...is the site which is not pinging from internet.I have also checked the source code for the root IP but still no luck.
View 4 Replies
View Related
Feb 29, 2012
today I received a Cisco 1841 Router with a problem i have never seen before. Maybe this my 1st really,really broken Cisco Router. When I power the Router on, the fan and all lights turn on (green) and that's it. Nothing changes, also after minutes of wating. On console i don't get any messages and I already tried every BAUD rate possible. Switched the router off/on again and again. And no, it's obviously not a console problem of my computer, because i tried with different routers.
View 3 Replies
View Related
Oct 28, 2012
I have the switch ============>>>>>
sw2960g============server linux
As u see above , the inetrface Gi0/6 , Gi0/7 are connected directly to linux server by two redundent links .
I mean that Gi0/6 is connected to interface0 in linux server
and Gi0/7 is connect to interface interface1 in linux server
Gi0/6===>vlan 1
Gi0/7===>vlan 2
each interface of linux server has a different ip and different gateway .
Now from switch, I make ping to interface 0 of linux server and i have a reply , every thing is ok but when i type the command :
#sh mac address-table | i Gi0/6
There is no Mac addresses and seems no Mac address relative to Gi0/6, I mean that doesn't it mandatorty to learn the mac address of linux server and write in mac table relative beside interface Gi0/6 ? How I could ping the server but no mac beside Gi0/6 ?
View 11 Replies
View Related
Jun 11, 2013
I have 2 servers, one active, the other standby, both will be using the same IP. If the active fails then a re-patch for the standby to make this the active. I understand that i will need to clear the arp & maybe mac address table on the 6500 for the new active server to work, as the failed server will have its mac address on the 6500,.
is there a way around this so i dont have to clear the arp cache & clear the mac table? [code]
View 6 Replies
View Related
Dec 11, 2012
a new LAN installation, two VSS pair 6509 core, 15 closets, with 3750 stacks. Floor 15 only, devices/hosts can ping teh DHCP server but cannot aquire IP addresses. no such problem on other floors?
portfast an dother parameters are intact.
View 2 Replies
View Related
Jan 30, 2011
I have a 3911 router with a 1242 AP. The problem that I have is that when the user is trying to connect, the user get the OS Ip address 169.254.168.154 and I see that when I do the "show dot11 association" command, but when I do sh ip dhcp binding on the router I see
172.19.9.141 0100.18de.74db.14 Jan 31 2011 11:14 AM Automatic
The router is seeing as if the router gave the ip address to the user, but the reality the user was assigne the OS ip address 169. I did "debug ip dhcp server events" and I got the following:
Jan 31 11:09:06.752 EST: DHCPD: Seeing if there is an internally specified pool class:Jan 31 11:09:06.756 EST: DHCPD: htype 1 chaddr 0100.18de.74db.14
Jan 31 11:09:06.756 EST: DHCPD: remote id 020a00000a58218400000000Jan 31
[Code].....
View 10 Replies
View Related
Mar 21, 2012
I am desperate to make some kind of translation which convert an outside IP Address of our web server to its inside ip address so that requests can be routed internally to the server.
This is what we have: A wireless network with an SSID to serve visitors. We also have an in-house web server which can be accessed internally and externally. We have a ASA 5520 that protects the internal network, including the Web server, and also routes all traffic from the all visitors connected to the public SSID to the outside. The DHCP server for the wireless network for visitors is configured to give the 8.8.8.8 as dns server. The problem with that is that the www.ourwebserver.com is resolved by Google's dns server to the public IP Address of our web server! The traffic then is sent to the outside interface of the ASA 5520. The visitor who wants to access our web server cannot connect!
How can I configure the ASA to route that traffic to our web server with the public ip address to the inside ip address of the web server?
View 2 Replies
View Related
Jun 8, 2013
We have 2 nexus 7010 switches configured with HSRP in the network. For all the vlans core1 is Master and Core2 is standby. In the current setup we have external dhcp server and dhcp relay is configured for all the vlans on Master and standby switch. The setup is running the IOS 5.2
Activity Done: During the Maintainacne activity, we isolated core1 switch in the network by disabling the vpc/keepalive and all the uplinks from access switch. The core2 switch was master for all the vlans.
Issue observed: It has been observed that new users were not getting ip address from the dhcp server. The ethereal capture showed that dhcp server was not getting the dhcp requests from the core2 switch. We disabled the dhcp feature in core2 and enabled again with dhcp relay again configured on vlan interfaces .even after doing this no change was observed in behaviour. Finally we got core1 back in network by enabling all the links.
Observation: The moment VPC link came up between the core switches, users started getting ip's from dhcp. Then we started enabling all the uplinks on core1.Core1 again become master for all the vlans and users continued getting ip’s. Network running fine.
Further Testing
1. For one of the vlan, core 2 switch has been made primary and for new users checked the dhcp functionality and it was working fine. The aim was to identify if anything wrong on core 2 related to dhcp relay
2.Again we changed the priority for this vlan and made core1 master for the same. This time we disabled this vlan on core1 and tried new user with core 2 became master and dhcp functionality worked fine for new user. Actually in this case we have simulated the same behaviour when we observed the issue with only difference of VPC was not available during the issue time as core 1 was isolated form network
Inputs needed.
Is there any known behaviour for dhcp functionality when VPC is unavailable? If we see the test scenario2 (wherein core1 was master for the vlan and we disable this vlan on core 1 and core 2 was able to relay dhcp requests for new users in this vlan.) it was actually same as scenario we observed during issue time..
View 7 Replies
View Related
Mar 18, 2009
Can a layer 2 cisco 2950 switch be used as a dhcp server with it's own address pool.
View 3 Replies
View Related
Nov 15, 2012
Does the 2960 switches with LAN-Lite support DHCP Server Port-Based Address Allocation?
View 1 Replies
View Related
Dec 7, 2012
I have configured Cisco 1841 router. My problem is what if every first time a user opens the browser will display a web page server. My web server ip address is 10.10.1.5. [code]
View 4 Replies
View Related
Jun 5, 2012
Am having an issue with my cisco 1841. I recently brought some IP Publics. Now that i need them i just can't use them, I don't know much about routers but till now have successfully manage to do some stuffs with the router after googling ,OK we already have some other ip publics and when i look at the config file i can see something like this:
View 3 Replies
View Related
Sep 15, 2012
I have a 2921, and I have 4 network segments. In segment 172.16.0.0./27 I wand to "pair" somehow connections. I mean IP 172.16.0.x has to have MAC aaaa.bbbb.cccc and so on, and not accept connections otherwise.How can I do that?
View 7 Replies
View Related
Feb 5, 2013
I have a SRW224G4P managed switch with webview, however I do not know what the IP address is of the unit to attempt to access via webview. I've tried to connect a serial cable to the console port and use HyperTerminal to access the switch, however the switch boots up and I never see anything in hyperterminal! I'm using the recommended port settings for the device. What else can I do to be able to set my IP address? Is there a hard physical reset that I can do on this unit somewhere since I can't seem to get the console mode to work?
View 0 Replies
View Related
Dec 11, 2012
I just ran into an interesting issue. VG Cisco 3825 crashes regularly with the following message in a crashinfo.
%ALIGN-1-FATAL: Illegal access to a low address 16:26:07 CET Tue Dec 11 2012
addr=0x0, pc=0x603EFF38z , ra=0xFFFFCC41z , sp=0x702E3C28
%ALIGN-1-FATAL: Illegal access to a low address 16:26:08 CET Tue Dec 11 2012
addr=0x0, pc=0x603EFF38z , ra=0xFFFFCC41z , sp=0x702E3C28
16:26:08 CET Tue Dec 11 2012: TLB (store) exception, CPU signal 10, PC = 0x603F32F8
Router: Cisco 3825
IOS: c3825-spservicesk9-mz.151-3.T3.bin
View 1 Replies
View Related
Jul 24, 2012
I am trying to connect my Access Server to my main network via the AUI port and I am not able to ping any device..
Current Config:
Access_Server#show run
Building configuration...
Current configuration : 1113 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
[code].....
View 14 Replies
View Related
Oct 31, 2011
i cant resolve one problem in may 1921 isr router, i have a web server in my internal lan , i set up static nat for accessing that web server from outside and it woks fine but i cannot view that site from internal workstations can you suggest me what to do. as i know when request gets to router it performs static nat and sends packet to the web server, but the server responds with its private source address instead the public address witch workstation expects and connection cannot established.
View 3 Replies
View Related
Apr 24, 2011
On a 4500 switch port , defined as access vlan 10, if the user connects his own dhcp server ( instead of the normal pc that should be connected ), will it cause issues with my existing network. the existing network is all static ip. In above case, will the dhcp server start looking out and assign dhcp ip's , if a user unknowingly removes his static ip and changes to obtain ip via dhcp option on the lan properties.
View 10 Replies
View Related
Aug 23, 2012
My configuration:
radius-server host 10.138.44.57 auth-port 1645 acct-port 1646 key 7 ******
!
aaa new-model
!
aaa authentication dot1x default group radius local
[code]....
View 2 Replies
View Related
Mar 26, 2012
I am having trouble trying to configure my cisco 2509 cisco router for access server. I have two guides shown below: URL and URL
However I am running into some problems. I can go through the second guide up until it asks me to do this command
Step 5: Configure the transport input protocol on the async lines to Telnet.
Access_Server(config-line)#transport input telnet
I cannot put in Transport Input, I only have the option of doing Transport Output let me show some lines from my console:
---------------------------
Access_Server(config)#line 0 14Access_Server(config-line)#no execAccess_Server(config-line)#transport input ?% Unrecognized commandAccess_Server(config-line)#transport ? output Define which protocols to use for outgoing connections preferred Specify the preferred protocol to use
Access_Server(config-line)#transport
------------------------
Im not sure whats going on. I have two routers(cisco 2600 series) plus my 2509 cisco router I am going to use for a access server. I have a two switches 2950 series and I have the access server connected to all of them via a octal cable.
Here is the configuration from the access server:
--------------------------------------
Cisco Internetwork Operating System Software
IOS (tm) 2500 Software (C2500-IS-L), Version 12.3(26), RELEASE SOFTWARE (fc2)
Technical Support: [URL]
Copyright (c) 1986-2008 by cisco Systems, Inc.
Compiled Mon 17-Mar-08 14:39 by dchih
cisco 2509 (68030) processor (revision M) with 14336K/2048K bytes of memory.
Processor board ID 22840809, with hardware revision 00000000
Bridging software.
View 7 Replies
View Related
May 2, 2012
Connected server on a tenGigabitEthernet interface simple configuration setup
switchport
switchport access vlan 201
end
for server connection. Connected with Fibre. The interface is up and up but cannot ping server?
View 10 Replies
View Related
Dec 24, 2011
On a 4500 switch port , defined as access vlan 10, if the user connects his own dhcp server ( instead of the normal pc that should be connected ), will it cause issues with my existing network. the existing network is all static ip. In above case, will the dhcp server start looking out and assign dhcp ip's , if a user unknowingly removes his static ip and changes to obtain ip via dhcp option on the lan properties.
View 1 Replies
View Related
Sep 25, 2012
I have setup a home lab for my CCNASecurity studies and have purchased a 2511 to serve as an access server. The 2511 was advertised as fully operational but when I powered it up this is the first error message I get.....
ERR: Invalid chip id 0x80B5 (reversed = 0x1AD ) detected in System flash
From my research it appears this may have something to do with an old ROM and newer flash, here is the ROM info....
System Bootstrap, Version 4.14(9.1), SOFTWARE
Copyright (c) 1986-1994 by cisco Systems
2500 processor with 16384 Kbytes of main memoryHere is the info on the IOS..
[Code].....
Could this be a simple as a ROM upgrade which I have found on eBay for $10.00? Or do I have a larger problem?The boot continues appearing normal until it gets to ....
%SNMP-5-COLDSTART: SNMP agent on host Terminal is undergoing a cold start and then completely hangs.
View 2 Replies
View Related
Feb 2, 2013
i have trouble accessing 192.168.0.254 for setting up my device. it says cannot access server.
View 1 Replies
View Related
Feb 21, 2013
we have a cisco asa 5505 and it working great .i want to create web server that only selected public ip address can access.
View 3 Replies
View Related
Feb 6, 2012
I'm just getting started with cisco kit so you will have to bare with me.I have a cisco 1841.i have a very wierd issue of routing...i cannot ping and browse through this.
View 3 Replies
View Related
