Cisco :: Overlapping IP Ranges?
Jun 1, 2012I am trying to trouble-shoot / map out a large network with a freaking butt load of over lapping IP addresses
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Cisco WAN :: ASA5510 - Multiple L2L VPN With Overlapping Remote Network Ranges?
Feb 4, 2013I have an ASA5510, and site-to-site VPN with several remote clients. I have to add another client but their network range overlaps an existing tunnel. Both are using 172.16.0.0/16. I would like to 1-to-1 NAT them as 172.17.0.0/16.
Is it possible to perform the NAT on my device, post-decryption, or is it necessary that I have them perform the NAT at their end?
Cisco Firewall :: ASA 8.3 NAT Overlapping Networks?
Apr 18, 2011how to make NAT work for some future projects (remote offices with overlapping networks, L2L VPN with overlapping networks, etc). Using this as a guide [URL] I was able to get it to work using an ASA and a router (initial configuration below). I'm able to ping from host1 to 40.40.40.2 (host 2) and it works, as does pinging from host 2 to 50.50.50.2 (host 1). The issue I'm having now is that I've replaced that router with another ASA (second configuration below). Once I've done that, I can no longer reach the end device with the NAT'd IP address. If I take out ASA1 and swap in a router (basically reversing the router/ASA in the initial configuration) it works fine as well. I'm only seeing issues when using two ASAs. I've verified that ICMP and telnet are permited inbound on the ASAs as well. I even tried seperating the final host with another router (third configuration).
Initial configuration:
Host 1 --------------------------- Router -------------------------- ASA--------------------------- Router ---------------------- Host 2
30.30.30.2 e0: 30.30.30.1 in: 10.10.10.2 e1: 20.20.20.1 30.30.30.2
NAT: 50.50.50.2 e1: 10.10.10.1 out: 20.20.20.2 e0: 30.30.30.1 NAT: 40.40.40.2
[code]....
Cisco Switching/Routing :: 10.10.10.10 / Outside NAT With Overlapping IPs In VRFs?
Apr 7, 2013I have 10.10.10.10 in 2 VRFs (lite) on 2 different VLANs What i would like to achieve:- if i connect to 172.16.7.125 in the global VRF then translate it to VRF1 10.10.10.10 destination address.- if i connect to 172.16.3.162 in the global VRF then translate it to VRF2 10.10.10.10 destination address IMHO the solution is quite simple:ip nat outside source static 10.10.10.10 172.16.7.125 vrf VRF1 ip nat outside source static 10.10.10.10 176.16.3.162 vrf VRF2 However the router thinks something else:
R1(config)# ip nat outside source static 10.10.10.10 172.16.7.125 vrf VRF1
R1(config)# ip nat outside source static 10.10.10.10 176.16.3.162 vrf VRF2% 10.10.10.10 already mapped (172.16.7.125 -> 10.10.10.10)
IMHO this configuration should be valid. The global VRF has two IPs (172.16.7.125 and 172.16.3.162) while the 2 other VRFs work happily with the two identical 10.10.10.10 destinations as they should. The two translations should be easily distinguished as these are from two different VRFs.Either i am missing something or it is a problem in IOS.
IOS is 12.4(25f)
HW is 3845
Cisco WAN :: How To Handle Non-overlapping Subnets With ASA 5520
Nov 25, 2011Our IPS has given us a second range of IPs as we were running out. Unfortunately, they can only give us two non overlapping range. I am running two ASA 5520 in fail over to handle our traffic but I don't know the best way to use both external ranges. This is not a failover scenario -- and I need outward facing servers on both ranges. It is adventageous to us to keep the two external subnets separating two of our operations so we don't want to bring everything into one subnet (long story).I have one NIC designated outside that will need to cater for both wans. As there are two subnet there are two gateways. How do I keep the traffic on track?
View 4 Replies View RelatedCisco VPN :: ASA 5510 / LAN-to-LAN IPsec VPN With Overlapping Networks?
Feb 14, 2012I'm trying to connect two operlapping networks via IPsec.
Details:Site_A use ASA 5510 with software version 8.0(4)32. Site_A use 10.100.0.0/24, 10.100.1.0/24 and 10.100.2.0/24 inside networks. 10.100.0.0/24 is directly connected to ASA (as vlan10), 10.100.1.0/24 and 10.100.2.0/24 are routed.Site_B use Linux box and networks 10.100.1.0/24, 10.100.2.0/24, 10.100.3.0/24 and so on (basically 10.100.x.0/24). I didn't set up this ASA, we took over this infrastructure without any documentation whatsoever.
According to link posted above I should use dual NAT. Site_B will see networks in Site_A as 10.26.0.0/22, and Site_A will see networks in Site_B as 10.25.0.0/24. Site_A is allowed to access only 10.100.1.0/24 in Site_B, and Site_B is allowed to access all 10.100.x.0/24 networks in Site_A - hence /22 mask in 10.26.0.0/22. I'd like to, for example, ssh from host in Site_B to host in Site_A using 10.26.1.222 as destination ip address (and it should be translated to 10.100.1.222 on the Site_A side). I'm looking for something like ip nat type match-host in Cisco routers - I want to translate only network part of the address an leave the host part intact. Anyway, following the steps from the link posted above everything is ok till the command:
static (companyname,outside) 10.26.0.0 access-list fake_nat_outbound
which results in:
WARNING: real-address conflict with existing static
TCP companyname:10.100.0.6/443 to outside:x.x.x.178/443 netmask 255.255.255.255
WARNING: real-address conflict with existing static
TCP companyname:10.100.0.20/25 to outside:x.x.x.178/25 netmask 255.255.255.255
WARNING: real-address conflict with existing static
[code]...
Cisco VPN :: ASA 5510 / VPN Client With Overlapping Private Networks?
Jun 6, 2012I have a new customer that needs to send data to us occasionally, we normally install the Cisco VPN Client on their PC, but this customer has the same private network we do.
I know this could be done with NAT Policy on my ASA 5510 with a site-to-site VPN, but the customer does not want to change the network hardware or addressing. They have cable router with no VPN capability, and they don't want to spend any more money on this project.
Can this work if their are no duplication of IP addresses?
Cisco :: Aironet 1250 Overlapping Channels / COM-AP Loses Connectivity
Jan 13, 2012In my LAN, I have always been used an Aironet 1250 for internal use and always work fine. Now, I added a 3com AP but both AP are not correct. When I turned off the AIRONET 1250, the 3COM AP settings works fine. When both are turn on, the 3COM AP loses connectivity all the time.I have heard about the overlapping channels in 802.11b/g networks.
View 8 Replies View RelatedCisco Firewall :: 5520 Connect Two Overlapping IP Address Sites
Dec 13, 2012I am trying to connect two overlaping IP address sites ( see attached diagram). Site A LAN address will dynamic NAT to 10.1.1.0/24 at ASA5520.All the users from site A need to get services from site B ( DHCP, DNS, Mailbox,Print Servers, AD loggin etc). All the connections will be initiating from site A to B.
1-will all these services will run over NATed address.( dynamic) or I have to change to static NAT?
2- Any sample config for ASA 5520 for this type of network?
Cisco WAN :: Simple Static NAT Overlapping Dynamic Internal Range On 5505?
May 21, 2011 I wanted to move to the cisco arena, and having a bugger of a time figuring out simple nat/pat rules combined with access lists. I've been reading Richard Deal's Cisco ASA configuration book, googling the heck out of this simple problem and can't see what I'm missing.
I have an ASA 5505 unlimited security plus license running 8.2(3) and a simple network, 192.168.0.x internal, 192.168.3.x dmz (not even touching that yet!) and outside I have a /29 subnet of addresses, 25 is the gateway, and 26-30 are my addresses.
I have simple dynamic nat set up on the .26 address to nat to 192.168.0.x. All I'm trying to do is port forward a simple tcp port I set for my linux server (192.168.0.2) on the inside, for arguement's sake, it's 2222 (it's not really). My outside vlan 50 is X.X.X.226 255.255.255.248 , can I make a static nat (inside,outside) x.x.x.226 192.168.0.2 netmask 255.255.255.255 ?
I tried using (inside,outside) x.x.x.230 192.168.0.2 netmask 255.255.255.255 and that didn't work either. Is it not possible to use two external addresses to hit the entire /24 range AND a single server?
My access rule for this nat is permit tcp any 192.168.0.2 eq 2222 (where I'm using 2222 for my ssh port). then I apply that access list to the access group interface "outside".
I thought the outside interface would do a proxy arp (since I do not have the sysopt noproxyarp command) for my 227,228,229, and 230 addresses where .226 is my internal nat for all my internal machines i.e. 192.168.0.1 -> x.x.x.226 . I had this working like a charm before with my fortinet, so I know I have systems listening.
Cisco Switching/Routing :: Nexus 7000 - Traffic Blackholing On Overlapping STP And VPC (CAM Table Related)
Aug 30, 2012I have run into a very strange problem while doing pre-deployment vPC/STP testing in the lab with a pair of Nexus 7000s.
The basic configuration is as follows:
2x Nexus 7000 VDCs (ver 6.0(4)) are configured as vPC peers and connected with a vPC peer-link (redundant on different 10G blades) and a vPC peer-keepalive link. The switches also act as HSRP and EIGRP routers. The N7K-A switch is nominally configured as STP root and HSRP prime for all VLANs, N7K-B switch is STP backup root and HSRP secondary. STP version is PV-RSTP+. As it stands now STP root and vPC prime are on different switches, STP root is on N7K-A and vPC prime is on N7K-B.
3x Layer-2 access switches (3750-1, 3750-2, 3560-1) are configured as access switches and connected to the Nexus 7Ks with a 1G uplinks in V-pattern.
3750-1 and 3560-1 are configured for vPC as Port-Channel10 and Port-Channel12 respectively. 3750-2 is configured for STP. Vlan 35 is shared between all three switches and is enabled on the vPC peer-link (overlapping vPC and STP domains). The downlink port to the STP-only 3750-2 on N7Ks is configured as "vpc orphan suspend".
Everything seems to work fine and pings on VLAN 35 between access switches (that have mgmt interfaces in VLAN35) recover rapidly after failures. However, if I break the vpc peer-link the ping between the two vPC switches 3750-1 and 3560-1 stops. Moreover, this appears to be sporadic in nature with some vpc peer-link failure attempts recreating the problem and some not. Sometimes the problem manifests itself when the peer-link is brought back up rather than taken down.
After doing a bit of troubleshooting, I have isolated the problem to MAC address blackholing. Basically when the peer link is taken down, MAC Address table on the vPC primary switch, N7K-B, (I believe during vPC convergence) forces the traffic destined from 3750-1 to 3560-1 through the STP only switch 3750-2, which apparently goes through the RSTP convergence and enables its alternate link to N7K-B before vPC has finished its convergence. After vPC convergence is finished the path through the STP-only access layer switch 3750-2 no longer exists, as vPC will take down all vPC ports and suspend orphan ports on the vPC secondary switch (N7K-A). However the MAC Address table on N7K-B still points through the 3750-2 access layer switch instead of directly through Port-Channel 12 on N7K-B and thus creates a traffic blackhole. Issuing a ping or bouncing SVI interfaces on N7K-B fixes the problem.
Connecting Two Different Ip Ranges?
Jul 25, 2011Is it possible to connect two different ips together? A proxy server : 192.168.1.1. All the connections are going through this Server, everything is working fine if the ip range is 192.168.1.XXX Now, when i changed the ip range from 192.168.1.XXX to 192.168.2.XXX im not able to access network, Note: default gateway is the proxy server itself..
View 2 Replies View RelatedCisco :: Port Ranges Not Working As Intended?
Nov 28, 2012Here's the version of the ios i'm running:Cisco Adaptive Security Appliance Software Version 8.0(4)The issue i'm encountering seems to stem from the use of port rangesThe client states that while a port range is included within the running config, nmap tests within the server indicate that port as closed. Below is the list of port ranges being opened within the ASA[CODE]
View 1 Replies View RelatedCisco Firewall :: 891w - Web Filtering For IP Ranges?
Feb 24, 2011Alright, well I have a Cisco 891w router and have just about everything up and ready to deploy. I'm primarily using Cisco CP 2.4 to provision the router with minor tweaks being done in the CLI. I want to set up a filter to allow access to roughly 20 websites for the majority of my network which is all on the same VLAN. The ip ranges are x.x.x.10 - x.x.x.169 which I have set into a Network Object group called limitac. The second group ranges at x.x.x.170 - x.x.x.199 and is called allowac. I have set up DHCP bindings for all the devices that will connect to the network but I want to set up a web filter for only the first group. I cannot seem to find anything in the Cisco CP manual or the IOS manual for setting up filtering for a range of IPs only. Primarily there are a few computers that need full access to the web while the others should only have access to the sites I set up in the filter.
View 14 Replies View RelatedConnect Two Different IP Address Ranges Without Router?
Mar 22, 2012Is there anyway to connect two different IP address ranges without setting up vlans? Trying to setup something so I can test out a device that uses "BACnet Broadcast Management Device" and I dont have two switches to create a vlan.
On site they have a couple of ranges setup with vlans
A 10.169.51.xx 255.255.255.0
B 10.169.52.xx 255.255.255.0
C 10.169.53.xx 255.255.255.0
D 10.169.54.xx 255.255.255.0
AS714 / How To Find Out All IP Ranges Belonging To Certain AS
Mar 27, 2012I want to know what IP ranges are belonging for example to the AS714.
How do I get this information?
I know how to do the reverse way, which is easy with whois. But the other way doesn't seem to be that easy.
Cisco AAA/Identity/Nac :: ACS 5.3 Unable To Properly Import IP Ranges
Apr 17, 2013I have multiple AAA Clients that I need to add. The way I manage the clients, I often make changes of moving IPs from one group to another. I require that all clients use "IP Ranges". I try import the following IPs (8.8.8.1;8.8.8.3;8.8.8.9-10;8.8.8.25) I need them all to be ranges, but what happens is after I import it, I then go to that AAA Client, it makes them all "IP Range(s) By Mask" and siplays it like this.
View 4 Replies View RelatedCisco Firewall :: ASA5510 - Two Distinct Public IP Ranges On DMZ
Mar 6, 2013I’ve been trying to figure out this for quite a while. I have a range of public IP addresses directly assigned on my dmz servers. The inside interface of ASA 5510 has one of those public IP addresses assigned (the default gateway for all dmz servers). Now I have a new range of public IPs that I also want to directly assign to new dmz servers. My goal is to have two distinct public IP ranges on dmz that should communicate between them. The inside ASA interface should be the default gateway for both networks.
View 1 Replies View RelatedCisco Switching/Routing :: 870 12.4 - Forwarding UDP Port Ranges
Jan 2, 2013I feel like this has probably been asked a thousand times over, but it doesn't seem to work for me. TCP works fine. I can't find any definitive answers, I'm still a novice with the IOS.
The purpose behind opening the ranges of UDP ports to the interface and forwarding is because the people in question want to run a VOIP phone from their home, but they have a home grade Internet connection, so therefore no static IP. Also, they're not going to pay for a router to create a S2S VPN.
Also, from one of the remote sites for which there is a VPN ( the 192.168.6.X/24 site), the audio is only one way. The phone guy says "i need to open ports both way through the VPN), but I feel like that's already been done??
For my other site ( 192.168.15.0/24 ) I have an IPSEC over GRE tunnel going, I don't know about the status of the voice phone there..or if its even made it there
Here's my config...i'm redacting things like public IP's, VPN keys, and the like
#show run
Building configuration...
Current configuration : 6525 bytes
!
! Last configuration change at 14:51:00 EST Wed Jan 2 2013 by ctouch
! NVRAM config last updated at 14:57:46 EST Wed Jan 2 2013 by ctouch
[Code]...
D-Link DIR-655 :: Access Control Policies IP Ranges?
Jan 9, 2010I'm trying to block internet access to a range of IP addresses using the Access Control function of the DIR-655 router. Unfortunately, the router does not allow me to block a range of IPs. Instead, I can only create policies based upon individual IPs or MAC addresses. I have over 60 machines I want to block Internet access and I'd hate to have to type them in individually. How do I go about blocking all Internet access (HTTP/FTP/email/everything) for a range of IP addresses? They will have to be able to continue to use the internal LAN.
View 3 Replies View RelatedCisco Firewall :: ASA5520 Individual Ports Versus Ranges
May 27, 2013Best practices for an ASA5520. I'm currently running a pair of these as internal firewall for my organization, and have about 750 rules dictating traffic. A lot of the rules are for individual ports to specific server(s), some of them having 50+ ports opened. For example, Exchange has about 115 ports opened right now, anywhere from port 25 to 55000.
My question is that would it be better (faster, less strain on the ASA) to open a port range, (ie 52000-55000) or would the individual ports (ie: 52112, 52336, 52698,53441,53495, etc...) be ok?Obviously the individual ports are much more granular for security, but I don't want to take that into consideration now. Just strictly individual ports vs ranges.
Cisco Switches :: Inter VLAN Communication SG300 With 192.168.1.x IP Ranges
May 15, 2013we have an SG300 latest 1.3 firmware, we have it acting as our DHCP server, we have a 10.10.1.x range, 10.10.3.x range, and 192.168.24.x range, they are all on seperate VLANs and all can talk to each other which is what we want. However we have someone who wants to use the 192.168.1.x range to add IP cameras to our network using there own switch. I figured I'd just setup our server to do DHCP etc and it would communicate with the 10.10.1.x range of IP addresses no problem. It turns out the SG300s can't do DHCP for that range, so if he has all static address on the 192.168.1.x range how can i setup inter VLAN communication so we can talk to that range?
View 1 Replies View RelatedCisco Wireless :: Make WAP4410 Fall Under Two Ip Address Ranges?
Apr 24, 2011I am wondering if I can make our WAP4410 fall under two ip address ranges. I want to have a network for the office users and one for the guest users. We currently use a Safe@Office500WP Checkpoint router. It allows us to create multiple network ranges. We have the office users wireless under 192.168.0.1 ip range and the Guest Wireless is under the 192.168.200.1 range. Do I need two access points or can this be done with just the one?
View 7 Replies View RelatedCisco Routers :: RV180 VPN With Multiple Network Address Ranges
Aug 2, 2012I have a client that needs a VPN with multiple network address ranges on the far end of the IPSEC tunnel. Is this possible with this RV180 unit?
View 1 Replies View RelatedCisco Switching/Routing :: 4507 Not Able To Route Multiple Ip Ranges
Apr 24, 2012I have this cisco 4507 switch that I need to configure multiple ip ranges on. The problem is that I can only configure two ip ranges on it, one ip range on the management vlan and the other ip range on vlan 2. After I have configured these 2 vlans with different ip ranges, I can route between then and get them to talk to each other, but that is all I can do. If I add another vlan with a different IP range I cannot see it from the switch or get any of the otehr ip ranges to see it.
I am doing something dumb because this is a layer 4 device so it should be able to route the ip ranges. I have tried everything just cannot get it to work. I have assigned the IP range directly to the port number and directly to the vlans. Just wont work.
Linksys Wired Router :: Rv082 - Two Ranges Of IPs For DMZ Configuration
Apr 28, 2013we have a RV082 and have the DMZ option enable for a range of IPs within the same sub-net of WAN IP and this works great. I have another range of Public IPs from our ISP that is not in the same sub-net of the WAN IP and do not see a way on the RV082 to include this 2nd bank of Public IPs in the DMZ.
Our ISP internet feed plugs into the RV082 WAN port and we have a switch plugged into the DMZ port of the RV082 that is used to connect the public devices in the current DMZ. Both banks of Public IPs from our ISP come over via the ISP internet feed plugged into the WAN Port.
My question is, if I cannot configure a DMZ rule to allow this 2nd range of Public IPs to "travel" to the RV082 DMZ port, how I can do this without one-to-one NAT or port port forwarding? The device I am deploying needs to be at the border of our network (like in the DMZ) and have some ability to talk to a device on our LAN.
Protocols / Routing :: Port Forwarding Ranges On Cisco Rv180w Router?
Aug 13, 2012I'm just setting up a Cisco rv180w router to replace our aging Belkin. I need to allow a range of ports through the firewall to a particular PC on our internal network that runs our VOIP/SIP Trunk phone system.
The Cisco's Port Forwarding looks like it can only forward one port at a time, but for our phones I need to allow a full range of ports (in this case ports 49152-64512) to one machine at 192.168.x.xx.
On the Belkin I used something called 'Virtual Servers' which allows you to enter ranges of ports. Anybody know what the equivalent might be for the Cisco router?
Cisco VPN :: ASA 5505 / Site 2 Site VPN With Overlapping Internal IP Schema
Mar 3, 2011I have 3 ASA 5505 Firewall, I am creating Site 2 Site Full mesh tunnel with each firewall, the problem i am facing is two of the firewalls internal schema are same, Like Site 1 has an Internal Schema: 192.168.0.0, Site 2 has an Internal Schema 192.168.0.0, Site has an Internal Schema 10.10.10.0
For that i have to create a policy static nat and access list??
I configurred a access-list like below,
access-list vpn_ih_site3_site1 permit ip 10.10.10.0 255.255.255.0 192.168.0.0 255.255.255.0access-list vpn_ih_site3_site2 permit ip 10.10.10.0 255.255.255.0 192.168.0.0 255.255.255.0
Cisco Switching/Routing :: Industrial Ethernet 2000 Series Temperature Ranges
Jul 24, 2012Any explanation regarding these different operating temperature ranges? I would think it doesn't matter the enclosure that the switch is in, it will either work or fail at a certain temperature.,-40C to +70C (Vented Enclosure Operating),-20C to +60C (Sealed Enclosure Operating), -34C to +75C (Fan or Blower equipped Enclosure Operating).
View 0 Replies View RelatedLinksys Wireless Router :: E1200 - IP Ranges As Access Point / Bridge Mode
Mar 18, 2013I have a Cisco 880 (supplied by my company and as such I have little access to the control panel). I have a Linksys (Cisco) E1200 to use as an access point. Cisco setup (love it!) but the simple setup gives the E1200 an ip range starting at 192.168.1.1 while the Cisco 880 range is 192.168.185.113. I need to have all connections in the same ip rage (192.168.185.xxx) for remote monitoring. What is the best way to accomplish this? Bridge mode (I don't need Guest Mode which I read is not possible in bridge mode)? Disable DHCP on the E1200?
View 1 Replies View RelatedLinksys Wireless Router :: Does WRT54GL Application Priority Section Allow For Port Ranges
May 11, 2013I want to prioritize League of Legends, a game which uses ports of ranging between 5000-5500. Does the WRT54GL "Application Priority" section allow for port ranges. If yes, have I put the range in correctly.
View 2 Replies View RelatedCisco Switching/Routing :: 1921 Routing Access From Mixed IP Ranges Between VLANS
Jan 23, 2013I have the following config using a Cisco 1921. I am trying to get devices on the the native VLAN to get internet access via the gateway x.x.x.73.Any thing being routed from the other Vlans 15/20/30 can get access, but nothing from an internal IP address. Is there something I am missing.
The Xs replace the same 3 octets for each interface.I am trying to route from VLANs 15/20/30 to see VLAN 5. I have tried a few things, in terms of adding extra ip routes, but can't get anything to work. Each of those Vlans have another router on the other side of them, which I have also tried adding ip routes too, but nothing. One of the routers (Vlan15 is a Draytek 2830). [code]
Cisco WAN :: 2621 / Time-Based Access Lists Using Time Ranges?
Jan 4, 2011I have one 2621 router i want to creat time base access list so that one of my subnet user(10.128.194.0 255.255.255.128) use only internet between 11am to 2pm.
View 15 Replies View Related