Cisco VPN :: 1514 / IPSEC VPN - Black Hole Router Detected
Apr 18, 2012
Having some issues with a vpn between two of my locations. Both edge devices are ASA's, and the tunnel is an IPSEC tunnel. Both MTU's are set to 1500 both on inside and outside. (provider mtu setting request is 1514, and both ASA's will be changed out soon.) Unfortunately, some exchange/kerberos auth issues are causing me a problem in the remote site. I perform the tests that microsoft recommends using a length of 1472 on packet ping size, and do not fragment flag (1406 is the largest packet I can push across the vpn) . I know part of this is due to the extra overhead that ipsec places on the connection.
I want to refrain from putting the black hole registry workaround on all of the PC's in this remote location.I've also seen some discussion about manually setting the TCPMSS value down to 1300 on most ASA's.
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Oct 16, 2011
I have created a site to site VPN between two networks. the 192.168.1.0 and the 10.0.0.0.What I want is the 10 to connect via ftp to 192.The VPN is working well, I can ping etc but when the 10 is trying to connect to the 192 it get a connection refused.The same if he tries to telnet to port 21.
It's a passive ftp that uses the ports 20,21 for connection and data and the range from 12000 to 12100 for the passive mode.I have added a rule in the access list for these ports to allow the traffic between those two ip addresses.The 192 can successfully connect via ftp to the 10.
The problem is not on the server config because it has a public interface too and you can succesfully login from there.So the problem must be on the Cisco in front of the 192. For a reason I don't know it blocks the traffic.I did a packet trace on the ASDM and I got an IPSEC spoof detected.
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Dec 29, 2011
[URL]I have a Linksys E4200, even if i put wireless on manual WPS is still working, any answer from Linksys?
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Nov 17, 2012
I have seen an error in GRE configured between two routers over WAN. i am monitoring the WAN link and GRe tunnel via WhatsupGold NMS and it reported that Gre tunnel having packet loss sometimes and this time it affects the services and traffic passing over tunnel.sh int t101 shows output drops . is that the problem ? i have read that i have to adjust MTC size but i tried to change the tunnel MTU to 1400 but still sh int t101 shows MTU as 1514 ? What could be the problem of output drops in my tunnel link. [code]
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Mar 5, 2013
I have an issue with the 7925 phones. We have a Cisco Call Manager with a couple of access points and a wireless lan controller. But we have at some points some sort of hole in the sound. He doesn't loose it's connection because i don't hear the beep when he's out of range. And according to the phone he still has a connection with the access point. But there is no sound anymore. And if i walk a couple of meters further i got sound again. If i walk back i somehow get in the same hole and loose the sound. Further back in i got sound back.
I know when it comes to WiFi that there can be some sort of blind spot but there isn't. He still has it's connection with the AP. Is there a value regarding de RSSI value that he needs to have to get a normal speech?
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Dec 28, 2011
Been catching wind of an upcoming super fast router....the Asus RT-66U.Currently their RT-N56U has been the fastest router tested at smallnetbuilder....at over 800 megs throughput.The new RT-66U has a 600MHz processor, and 1 gig of RAM. State table size (concurrent sessions) at over 300,000.
Supposed to be based on the Broadcom chipset..so it'll probably support DD-WRT...but to be honest, I saw some screenies of the Asus firmware for this unit...and holy crap what cool features.url...
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Aug 17, 2011
My mechanical engineer needs detailed measurements for the hole patterns on the sides of the Cisco 2911. Where I could find this?
I've searched and read the installation docs, which shows pictures of the units. Although useful, they does not show exact measurements, angles, and hole diameters.
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Aug 22, 2011
An issue that we have run into is that on some of the machines, black areas appear over the screen at random times.These black areas disappear when the users mouse over and return when the mouse is moved back. The areas are usually small (about 30 pixels wide) and we have had to log the users off and on again.The machines that users are using are Thin Clients (HP and Wyse) and it seems to happen when certain programs are in use (Sage).
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Oct 7, 2011
At random times AT NIGHT, while Call of Duty, Black Ops, the signal on the game goes red. I have spent more nights on the phone with ATT without resolution and refuse to call again. An ATT tech has come to our house twice, once to check the outside line and to look inside too. Signal to house is always fine.We bought the 2Wire 2701HG-B since ATT said that our problem was we were running a modem and seperate router. We even sent the PS3 out for service thinking it was the problem. Yet here we are again with a red signal in the game.On the modem, the ethernet and wireless flash VERY rapidly, its more like a strobe than a flash. The internet and dsl lights are solid. We are considering going to cable from DSL.
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Jan 7, 2012
Cannot start my lap/Toshiba NB205-N311/W . Only: Toshoiba Innovation comes up and then black screen , no way to log in, the hard disk lamp flashes once very shortly that's it. I tried CTRL-ALT-DEL, the same as above discribed. Nothing works no F2, F8, the hard drive just won't start. I even took out hte battery and tried only with the cable(just found this advice on the IN, it said the screen will work), but nothing I like my little lap and it always worked fine till today.Well nearly, since some days I could not restart without using CTRL_ALT DEL/Enter
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Jan 24, 2011
black screen with small line in left corner blinking
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May 20, 2011
So I have two xbox 360's plugged directly into my dir-655 router with Ethernet cables. I have no idea how to port forward these, correctly and everything I try ends up with my router being reset. I don't have a pc connected to the router, only a wireless laptop.
opening ports for multiple xbox 360's (Black Ops is what we are trying to play).
One thing I do know is that when I tried portforward.com's walk-thru for port forwarding, when I enter the ports into the dir-655 port-forward menu, I can no longer connect to Black Ops at all, it says servers are down (WHICH THEY ARE NOT I CHECKED).
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Feb 20, 2012
Does this board supports DirectIO to PCIe devices? I have one, and there is an option in the BIOS for IOMMU (disabled or 64mb) which dosent seem relevant? But ESXi dosent see support for pass through.
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Feb 18, 2012
i have a comp that runs freezes everything screen fades beeps a couple of times and than that black screens and seems to run very slow i have 4gb amd athlon(tm) 11x2 240 dual process 2.81 ghz 64 bit operating systen on win7 premium dont know why this suddenly started happening and sometimes wont switch on /off?
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Nov 12, 2012
Can't get my printer to work. Bought a black ink do we have to have colored ink aso? It's a hp photosmart-D110a.
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Jul 22, 2012
I ran the setup CD and can access my camera from inside my local network. When I try to access it from outside, I can access the camera fine but the video stream is black. I tried RTSP ports 554, 2080 and 5632 with no success (of course I port forwarded the dsl modem as well). My dsl modem is a westell 7500 and my ISP is frontier communications. I contacted their support tech and at first he ran me through the exact port forwarding sequence I had already done on the modem. He then went away for a while and came back to say that I need to upgrade to their fixed internet address service. I understand dynamic DNS and don't think this is an issue because I can contact the camera OK, I just don't get the video through (black screen). Another issue is that the camera is reporting PPPOE 'failed'. The support tech has given me two PPPOE user names and passwords but neither work. The support tech said that they do require PPPOE.
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Jan 12, 2011
i followed the instructions on the link and I can not for the life of me get my NAT to display OPEN or even Moderate. Always says STRICT. I have tried all the link and all the videos about forwarding ports followed all the instructions to the T. But the PS3 in the DMZ. And still, Nothing. It's BS.
Using router FW: 2.00NA
Ports Forwarded: TCP 80-81,443,5223
UDP 2005,3074,3075
TCP 3074
UDP 3478
Assigned QOS engine rule to the IP of my PlayStation and set it to priority 1.UDP Endport Filtering and TCP Endport Filtering Both set to independent?Enabled Anti-Spoof Checking?
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Feb 22, 2012
I have just installed two DCS-942L cameras and uses MyDlink. The live video is OK from MyDlink, but when I log on to the cameras from "Advanced Settings" the live video is just a black screen, no matter what video profile I select. Like wise I can't select motion detect area, because there is just a black screen.I have tried on tree different computers. What can be wrong?
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Mar 1, 2013
Every time i plug in my adapter wusb600n and i got internet i go play black ops 2 my game and my whole pc freezes and if i do an other internet without the adapter and use a sitecom adapter or an linksys pci card everything works good but with the wusb600n i every time get freezes even when im not in game, my pc freezes every time and it is really good internet speed with this dual band adapter?
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Jun 15, 2012
I have a DCS 3420 that is connected via CAT5 to may LAN and 2days ago something happened on the laptop, whenever I open the window in internet explorer on Win XP Pro; the camera just show a black screen.If I use any other computer on my LAN I get a clear picture of the Gate that the camera is focused on...I have checked the laptop drivers and updates but ca not see something wrong.
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Aug 30, 2012
Just discovered I can change the focus on a DCS-920 by adjusting the black ring around the lens. It can be focused from very close, just inches, to infinity. I don't see this in any of the DLink documentation.
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Jun 28, 2012
We have a customer that has a fiber rum between 2 building. They want to have 2 seperate fibers active that terminate into the same switch on each end. (redundancy).
In building A they have an extreme networks black diamond switch that does not support STP.In bulding B they have a Cisco 4507.
We will ahve to use a layer 3 routed connection due to the fact their switch in building A does not support STP.Our tech does not want to use static route becuase he does not want to setup IP SLA for the redundant connection.
Will RIPv2 work for this scenario and failover to the other fiber if needed? The hop count is the same for each fiber path..
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Oct 4, 2011
I had a v4 router on the blink so i used a spare new v5 .Thing is one hp laptop finds it and i can connect with new router .the other one a hp as well cant find the router after refresh re boot and repair It does connect with ethernet cable.
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Feb 1, 2011
I have a cisco 1811 router with 12.4(6) IOS, I would like to ask can I use this as a layer 2 switch?
When I issue vlan ID command it gives me " Invalid input detected", I need use this device as switch to create different vlan on and the connect the f0 port to a ASA
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Apr 1, 2013
I have D-link 524 router, my problem is that its signals are not being detected ( the devices we connect are ipad 4, htc wildfire S, nokia e-5 . these devices detect other wifi and connect to them.
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Aug 10, 2012
i have a problem suddenly cant connect through router anymore.. it said "DHCP server PPPoE not found" but the day before yesterday i can connect.. but if i connect without router (modem to PC/lappie) My router : Buffalo Airstation WHR-HP-G300N, i have tried several action like reset router into factory setting but couldnt solve my problem. i realize recently that DHCP thing cant find any IP address anymore.. is that my router problem/my ISP? when i try wired connection, i realize too.. My IP address, DNS become some what different than usual.
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Oct 21, 2011
I'm trying to fix my brother's computer (an old Dimension 4600). At first ISP modem wouldn't even detect his computer on the network. I downloaded the Ethernet drivers and installed them and now it detects his computer, but it still won't connect to the internet
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Apr 30, 2011
I am getting a window message which is saying ''Window has detected an IP address conflict. there is another pc on this network that is using the same Ip address.
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Dec 7, 2011
I have installed Ver.1.0.03 (Build 14) Firmware on my E4200 I launch cisco and detct the printer fine prints fine but goes to offline and my scaner in that printer not work My printer is cx7400.
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May 6, 2012
I've recently bought a WRT120N router, when I install the router using the CD an error occured error 322 New router or gateway not detected. I tried to download new version of firmware but it didnt work.
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Apr 20, 2013
Region : Malaysia
Model : TL-MR3420
Hardware Version : V1
Firmware Version : TL-MR3420_V1_121123
ISP : Celcom
My HUAWEI E367 Can't Detect in TL-MR3420.I don't know what to do and I'm already downgrade the frimware but it still can't detect my broadband. Then, I upgrade the frimware and it still can't detect my broadband.
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May 2, 2012
I am using the E3200 in a bridge mode to my uverse wifi router, since the E3200 has 5ghz and my uverse router doesn't. every week or so, I would not be able to detect the E3200 on my Mac Book Pro (I only enabled 5ghz on the E3200), but I can connect to the 2.4ghz uverse router, then access the admin page of the E3200 w/o.
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Dec 6, 2009
I'm having problems getting the WUSB54G v2 adapter work with the WRT160N router (firmware 2.0.03). I'm running Vista Home Premium SP1. My wireless network is not detected by the WUSB54G and is not on the list of wireless networks I can connect to. I'm also having trouble connecting to WUSB54GP ver 4. The network is detected, but I can't connect.
Change the Beacon Interval to 75
Change the Fragmentation Threshold to 2304
Change the RTS Threshold to 2307
Now the WUSB54GP ver 4. is working perfectly, but the WUSB54G v2 still can't detect the network. I'm also running a PS3 and a laptop, which work perfectly with the WRT160N router.Also, the WUSB54G v2 system works just fine with my old router (WRTP54G).
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