What Application / Service Is Sending Out Netbios Broadcasts On A Network
Dec 20, 2011
i need to be able to find out what application/service is sending out net bios broadcasts on a network segment the requests are for machines that no longer are on the network but something is trying to obtain there ip address as they are not in dns any more i am assuming this is why they are resorting to netbios broadcasts i need to some how isolate what application or service is trying to find out.
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Dec 20, 2011
what application/service is sending out net bios broadcasts on a network segment the requests are for machines that no longer are on the network but something is trying to obtain there ip address as they are not in dns any more i am assuming this is why they are resorting to netbios broadcasts i need to some how isolate what application or service is trying to find out.
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Feb 28, 2012
We have a situation where services are stopped on the real servers. The probes fail and we confirm the services are not running on the server. We cannot access the ports from the ACE directly. We can still however acces the VIP on the TCP port (L4 VIP class-map). So we can still telnet to the VIP on the port from thr Client side of the network.This is on ACE 20 Modules deployed in Routed mode. The version of software is A2(3.3).
Tried removing multi-match and loadbalance policies as well as class-map and re-applying then re-appyling the service policy to interface. Same behavior,This is a problem at another level as some services are being monitored by GSS via TCP keep-Alive and this obviuosly causes a problem as the service then never goes off-line.
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Mar 18, 2013
How can i connect two computer in same LAN with Netbios
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Aug 11, 2011
I have a WRVS4400N that brocasts two different SSIDs. One is a public network and the second is a private network. Right now, both SSIDs are pulling from the same DHCP server, but I would like to seperate the public from the private. How can I seperate these SSIDs by vlans? I can't seem to get the vlans to route to sperate ports.
This is my vlan settings. I have two DHCP servers right now. One is in an isolated network plugged into Port 3 of the WRVS4400N. The other is on the production network, plugged into port 1 of the WRVS4400N. For some reason, whenever I connect to SSID Public, it won't pull an IP from the DHCP on port 1, it only pulls it from the one on port 2.I know there is three SSIDs here, the Static one is going to be the same network as the EMS one.
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Apr 3, 2012
I am taking an introduction class to CCNA and we are focusing on the Application Layer,and I'm having some difficulty in understanding what is an Application Layer Service. Is the Application Layer Service the same as Application Layer Software?
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Mar 24, 2013
i have two CSS-11503 in redundant mode running 8.20 code. We had an incident in our network where a layer 2 loop caused some high traffic through the CSS' and had to shutdown some network gear(including the CSS) to clear the problem. When the CSS' were powered back up, the SSL service was suspended, why this would occur? There rest of the config appeared normal. I am the only person on these boxes, the configs were written, and I have never had a reason to suspend the ssl service.
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Oct 14, 2012
some misconfiguration (?) may be the reason for an undesired behaviour we are experiencing with our Cisco CSS 11501s. Balancing mechanisms work fine, however if a service transitions to the "down" state, the corresponding flows remain "alive" leading to a temporary outage of our service. Subsequent client requests are still being sent to the "down" frontend which is unresponsive.
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Nov 28, 2012
I have an ACE4710 with a few basic farms running and it works great however I now need to implement an SSL proxy service for the first time. The requirement is that clients who are already using FQDN's need to be sent to diffent real server IP addresses as each client will have their own VM. All the clients will use the same global IP address with different A records.
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Dec 27, 2011
I have an ACE10-6500-K9 (Application Control Engine service module for Catalyst 6500) but I can't access it because I lost the admin password.I would like to know how to perform a Password Recovery Procedure on this device.Is it similar to the password recovery procedure on an ACE 4700 appliance?
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Sep 1, 2010
Does ACE service module support SHA2(256) certificates? I see that private key generation defaults to SHA1 and does not provide any option, also the cipher suites in SSL parameters map do not show SHA2 options. Can it handle SHA2 in any software release? I am currently running A2(2.3) build 3.00
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Dec 2, 2012
My ACE module ACE30-MOD-K9 crashed today, and at the show ver output i see "last boot reason: Service "cfgmgr" ".the curent version we running is Version A5(1.2) [build 3.0(0)A5(1.2).
After doing some research i found known bug that supposed to be fixed in this version: CSCtu36146
CSCtu36146—The ACE becomes unresponsive due to a configuration manager (Cfgmgr) process failure with the last boot reason: Service "cfgmgr."
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Nov 9, 2011
if a Cisco router or switch can handle wccp redirection enabled for both waas and some other web content filtering appliance using a different service group?
seems like the priority value would come into play determining which service group gets handled first?
we currently do WCCP for WaaS on our 3945s.
I am going to advocate to my customer that we separate this out for CPU load issues, config complexity issues, IOS issues, etc... but the question is going to come up - "can we do WCCP for different applications on our Catalyst 3750 core switch, or our 3945 WAN routers?"
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Oct 8, 2011
I am looking for a way to send messages over my open network just like you wanted to. Can't seem to find an answer so far on line.
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May 19, 2011
Is there a way or software can I use to send messages to all wirelessPCs in my network without doing any configurations or installation on those PC.I've used net send command for that, but is there another way?
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Sep 10, 2012
I've recently had to move an AS400 system behind an internal ASA firewall and now users are unable to browse to it.The ASA is running Version 8.2(5)? I get these messages: Sep 11 2012 17:09:59: %ASA-7-710005: UDP request discarded from 172.19.241.35/137 to outside:172.19.241.255/137?Is there a way to enable these ports without enabling NAT?No VPN's involved, just an inside and outside eth interfaces?
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Apr 1, 2012
I am using the cisco vpn client to connect to the sa520 router. When I am connected I have split tunneling working so I can surf the internet and I can also access the server on the remote network by ip and full dns name I can not do it by netbios. and I have been trying to get or domain suffix on the vpn client but nothing I have tried is working?
1. the remote network domain as the connection specific dns suffix or
2. how to get netbios to go over the vpn connection
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Mar 17, 2011
I can't connect to the internet. When I double click Local Area Network under Network connections it says it has both sent and received packets. It is set to automatically acquire an ip address. The computer is connected to a router. I can ping 192.168.1.1 but when I try to reach my router's settings it says page can't be loaded. I tried to hook the computer up directly to the modem and connect that way. It said it was connected and it was sending packets but I still couldn't do anything. I've turned off the windows firewall. The computer is Windows XP SP1
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Mar 17, 2011
I can't connect to the internet. When I double click Local Area Network under Network connections it says it has both sent and received packets. It is set to automatically acquire an ip address. The computer is connected to a router. I can ping 192.168.1.1 but when I try to reach my router's settings it says page can't be loaded. I tried to hook the computer up directly to the modem and connect that way. It said it was connected and it was sending packets but I still couldn't do anything. I've turned off the windows firewall. The computer is Windows XP SP1.
More info:
ip config /all
netstat -n
ping&tracert 192.168.1.1
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Oct 27, 2011
For a customer I have configured a new ASA 5505 firewall with 8.42 software. I had to build 3 ipsec tunnels to different locations and firewalls. All tunnels are working except one. I have to translate the inside network 1 to 1 to a different private range before it is sent over the tunnel. Each host from network 192.168.133.0 /24 has to be translated to a 192.168.112.0 /24 host and then sent over the tunnel. (e.g. 192.168.133.22 translated to 192.168.112.22)
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Jun 7, 2012
I am installing a new Cisco AP1042N access point in our network but the maximum speed it broadcasts is 54Mbit(802.11G) and that should be 300Mbit(802.11N). Im also disappointed about the range. Im using it in a small office building with a few thin walls but when im about 20 meters away from this access point my signal strength is very poor (My €100 HP V-M200 AP does much better in the same environment).
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Feb 17, 2013
it is possible to route netbios broadcasts between VLANs using a RV180W. Presently i have the network configured with two vlans (one for each building). The RV180 operates as a DHCP server and internet gateway for VLAN 1 and a linksys product operates as the DHCP server and internet gateway for VLAN 2.With the addition of a static route between, we can ping freely between the VLANs, transfer files, etc. However, members of VLAN 2 must be addressed by IP in windows explorer by members of VLAN 1 and vice versa. I understand this is because Netbios broadcasts are not routed between the two vlans, precluding addressing computers by name. While this is not a critical problem, it would be "nice" if i could configure the RV180 to route only Netbios between the two (still hold other broadcasts such as DHCP). I understand this ispossible on higher-end cisco products through the use of IP-Helper addresses, but I cannot find any information on doing such on the RV180.
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Apr 10, 2012
We are using the SG300 series switches, and have come across an issue where we need to block ARP broadcasts based on IP.
we have multiple computers, each with only one ethernet adapter, each adapter has two IPs configured, 10.10.10.x and 192.168.0.100.All machines have the same 192.168.0.100 address (Used for applications/hardware running locally to that machine and this IP cannot be changed).
When the machines are connected to the network, ARP is advertising BOTH the 10.10.10.x address and the 192.168.0.100 address.
As all machines have the same 192 address we receive IP conflict notifications on each machine.
How can the ARP broadcasts for the 192 address range be blocked?
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Jan 7, 2013
In troubleshooting another issue I set up another SG300 on the same VLAN as my SG300-28P and then setup a Monitor Port on it to see what Broadcasts I was getting.
Low and behold the SG300-28P is sending out quite a few Broadcast Packets. Most of them are the same, ARP Request for its Default Gateway Address. Others are for a few other AD Servers on our network.
Arp Entry Age Out is set to the default of 600000 with "Normal Age Out" selected. Though in a few minutes of logging Packets, there were almost 7,000 broadcasts from it for the its Gateway Address. The Gateway Address that it has is the IP of a Cisco ASA 5510. Is there some TTY on the ARP entry like DNS?
This is the Wireshark Packet. The Frame check sequence is Bad, what can cause that?
No. Time Source Destination Protocol Length Info 1737 67.457763000 Cisco_a9:93:84 Broadcast ARP 64 Who has 10.1.0.3? Tell 10.1.2.3 [ETHERNET FRAME CHECK SEQUENCE INCORRECT]
Frame 1737: 64 bytes on wire (512 bits), 64 bytes captured (512 bits) on interface 0 Interface id: 0 WTAP_ENCAP: 1 Arrival Time: Jan 8, 2013 14:44:06.952611000 Pacific Standard Time [Time shift for this packet: 0.000000000 seconds] Epoch Time: 1357685046.952611000 seconds [Time delta from previous captured frame: 0.000106000 seconds] [Time delta from previous displayed frame: 0.000106000 seconds] [Time since reference or first frame: 67.457763000 seconds] Frame Number: 1737 Frame Length: 64 bytes (512 bits) Capture Length: 64 bytes (512 bits) [Frame is marked: True] [Frame is ignored: False] [Protocols in frame: eth:arp] [Coloring Rule Name: ARP] [Coloring Rule String: arp]Ethernet II, Src: Cisco_a9:93:84
[code]....
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Dec 6, 2011
I have Linksys e3000 , I used the web interface to set up the storage. I also from the Administration option of the Storage inside Web Interface changed the netbios name or Device name to the one I like. Now the name does not resolve to the ip address. It used to when I had recently unpacked. I can still access my drive by IP address.
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Jan 3, 2012
Just this weekend, my DIR-655 has suddenly started blasting out continuous IGMPV2 Membership broadcasts, causing a flood of network traffic that's not normal and is interfering with other traffic. Rebooting everything in the system didn't fix it, turning off the other machines on the network (3 + NAS) didn't fix it, and I couldn't find anything in the configuration of the DIR-655 to stop it.
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May 17, 2013
ARP broadcasts not reaching all VLAN ports on 3550
Cisco 3550, interface Vlan9
ip address 1.1.1.1 255.255.255.240 secondary
ip address 3.3.3.3 255.255.255.240
[Code].....
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Feb 5, 2011
I have recently installed a Cisco 2106 with a single 1131 AP at home! I know, lucky eh, it was used in our office but I now have it only on a temporary basis and have it set up as a home lab. I am using a single SSID with WPA2 AES encryption with PSK using default values and no P2P blocking enabled.Initially the controller was running ver 5.2.78, the connection was very slow compared to the wired connection and I couldn't VPN over this link although I could over the wire?I thought I would upgrade to ver 7.0.98, which resulted in the VPN now working but still slow speeds.I tested all cables and connections and swapped out the cables with no difference along with checking the interfaces on both sides with no errors reported. I was also testing on both A & G radios with again no difference and erratic ping response times. I also noticed that Windows homegroup was now not working along with RDP using the netbios name (using the IP worked ok) and strangely I cannot telnet to the controller although it is enabled and enabled for wireless management (it says telnet not allowed on this port when trying to ssh!! a telnet connection just times out); I can connect via https with no problems . All these features work flawlessly going through the router, just not over the Cisco WLAN?I then downgraded and upgraded along with rebuilding the controller thinking it may be an issue with my AP or controller. This resulted in the connection speed to return to normal but still none of the other features mentioned are working as they should. I also removed all firewalls and acls from the end devices and the router with no effect.
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Oct 11, 2011
I recently purchased an SG300-28P. I have 2 VLANS/subnets that are successfully routing between them.Machines on both sides can ping each other just fine, but none of the usual Windows/NetBIOS browsing is possible. I've recently learned that NetBIOS is not usually forwarded between subnets. How would I enable NetBIOS packet forwarding between my subnets?
Reading the manual, it seems like enabling UDP Relay might be the answer but I've been unable to get it to work (same with DHCP relay).
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May 17, 2012
We had a core switch (Cisco 4503), distribution switches(Cisco 3750) and access switches in our network and consists of many vlans. Almost all vlans uses DHCP Pools. But for few vlans DHCP is not yet configured due to initial design poblems. Recently one of the rogue user in vlan 1 connected to one of the access switch send rogue arp packets to the network (suspecting arp packet with interface vlan 1 ip of core switch with wrong mac-address (gateway ip of vlan 1)) and resulted in a prolonged network outage for the vlan 1. Any way we are going to seggregate vlan 1 into different vlans, but before that we need a temporary plan to block such kinds of attack like enabling DAI in the switch. I have checked the DAI implemenation feasibility with my knowledge and found that it is not possible to configure to the access switches(Cisco 2960) in which the user directly connected. But found that Distribution switch connected to that particular access switch seems to be able to configure since DAI commands are available to configure in switch.
Is it possible to block ARP packets with the interface vlan 1 IP Address with rogue mac-address by configuring DAI in the above mentioned Distribution switch and the port connected to the mentioned access switch?
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May 16, 2011
When I create a service object or group and add the object to a new rule it never works.I mean the traffic match not the rule. I see not hits.I placed the rule on top of my access list to check if I do somethink wrong but it is not working. When I place only a service for example tcp/23 it is working.
my ip service object
object-group service g-as400 description access client 2 as400 machine service-object tcp-udp destination eq 397 service-object tcp destination eq 137 service-object tcp destination eq 2001 service-object tcp destination eq 3000 service-object tcp destination eq 445 service-object tcp destination range 446 447 service-object tcp destination eq 449 service-object tcp destination eq 5010 service-object tcp destination eq 5544 service-object tcp destination eq 5555 service-object tcp destination range 8470 8476 service-object tcp destination eq 8480 service-object tcp destination eq
[code]...
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Mar 25, 2013
I have a fresh installation of LMS 4.0 on windows server 2003, when i click to open topology i get error message : ANIServer service may be down or Host name isn't DNS resolvable
i tried pdshow -brief ANIServer ===> service UP
DNS is working using host file in driversetc i restarted the server
restared the crmdmgtd
unistall / install java plugin
pdterm ANIServer
pdexec ANIServer
NO change ..
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Jul 5, 2011
how to sending out the wireless network from computer A to computer B if we used a lan network to computer A
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