D-Link DIR-615 :: Router Itself Responding To Different TCP Stealth Scans
Oct 17, 2011
I decided to buy myself a DIR-615 Wireless N 300 Router, its wireless performance is thus far very stable and strong. This router factory firmware loaded is 5.10 HW: E3.I never use Router features like SPI and DoS Protection, and I always use DMZ for unrestricted filtering, I use a software firewall for protection and monitoring traversing packets.
The problem is, D-Link does limited filtering over DMZ, I�m not use to seeing this with other popular router brands, I�m not happy with this implementation of DMZ. Now what�s worse, the Router (not the computer set on DMZ) itself is responding to different TCP stealth scans like TCP NULL, XMAS, FIN.How to correct this without enabling protections like SPI, so the Router won�t respond nor drop these types of packets when a computer is set on DMZ.
I have tracked about 7 unique IPs originating from China where these scans for accesses to my network are causing 2-10secs of downtime in realtime gaming. Never had this problem when I was using Firmware 1.34NA. Stuck with 1.35NA and its causing lots of eyesores even though Wifi has been great with my laptop and phone for N/G. I only keep my main PC on and my 2 fileservers are offline until need to start archiving data or fetch something from them. Wifi is disabled until I need my laptop and phone. I personally had my ISP do an inhouse checkup and fixed some splitter issues and a new coax cable so signal issue is fine. Motorola 6120 Cable modem. Was pushed to contact my ISP Abuse group to figure this out but it might be a lingering issue for awhile.
My router is running the stock 1.21 firmware and it has been fine for almost a year before the wireless suddenly stopped working. I reset the router and restored my previous configuration. After the reboot, the SSID is visible and I can connect to it but there is no internet connection. Also the router becomes unresponsive, i.e. timeout trying to access the router configuration page. After trying out different settings it seems that enabling WPA2+AES is the cause.In the mean time, I am running an open wireless network and everything seems fine. Is the hardware faulty? I am reluctant to update the firmware because of a negative experience with another router (same model).
As of two days ago my DIR-655 seems to have stopped loading webpages every 10-30minutes for periods of up to 5-15 minutes, as in they the reloading icon will constantly be circling and the webpage remains blank, no error or anything until it says failed to load on my web browser (tried multiple browsers such as Safari, Chrome, IE and Firefox). This problem occurs on every computer on my network, laptops (both Mac and PC) and desktops. When this problem occurs all lights on modem and router seem to be normal no signs of anything going down but I originally thought that this affected wired and wireless but I seem to have narrowed it to culprit being the wireless. When connected to the PC I can browse for an indefinite amount of time without the webpages failing to respond, however when I connected to WiFi through Airport on a Macbook Air my webpages start to begin failing to load around 5-10 minutes of browsing which affects all computers connected to the network (essentially all computers failing to respond to the internet during this outage).
Interestingly when this problem occurs, if I am connected to Skype or Aim it will stay connected and I can still chat with people but I will not be able to sign onto AIM if the problem occurs before I sign on and I try to sign on during the outage. If I am streaming a video from justin.tv or ustream it still continues to stream during this "outage".I have the revB of the DIR-655 and have tried resetting the modem, turning off the firewall, upgrading firmware to 2.03NA from 2.01NA and setting the MTU to 1400 (default 1500) with nothing working. I am using Time Warner Wideband ISP and have connected the modem directly to my PC and for the 30minutes or so that I tested the web browsing it seemed fine and did not have any errors.
I have a N600dp. My printer, Brother MFC-J410W, is plugged into the router USB port. The printer function works but the scanner function doesn't. I keep getting an error message that the printer is not connected.
Is blocking echo request to prevent ping sweep the same as having a firewall in stealth mode? And how could someone ping sweep from outside if you had a firewall at all?
I get the message "dns server isn't responding" several times per day. If i get the message, nothing can get through to the internet (smartphones, laptop, vita, friends smartphones, etc.) If i reset the router, i can access the web again. Or if i wait for 2 minutes.
This is my setup:
Cable modem connects to D-link 615. Laptop is connected with a cable in D-link 615. All my wireless stuff is connected via wireless D-link 615. My cable modem is also connected directly to my ps3. I'm running windows 7 on my laptop.
I've never had a router or network in my place and I've just bought a DIR-825. I previously had a DIR-615? but returned it because I was having this problem. Now I'm still having it with the 825.When I use IE or Mozilla Firefox(preferred) I can usually navigate 2-3 pages before the program stalls and goes (Not Responding) for about 15-20 seconds before it starts going again. Then it repeats again in about another 3-4 pages or so.
I've got the times set for my router and I'm using Firmware 2.03NA-RevB
I bought a new DIR-615 and tried to install dd-wrt on it. During the installation all of a sudden the router stopped blinking the led lights and stopped responding to anything. It's current status is that I can only see globe LED and the other 4 LAN LEDs in continuous green and NOT blinking. The power LED and wireless LED are not even displaying. I tried all kinds of reset like soft,hard and crash but no response. It's not responding to anything except those 5 LED lights.
I have a DIR-615 that is not responding to hard resets. It was working fine for about a week and then stopped handing out IP's to wireless clients. I attempted a power cycle and when the router came back up the wireless light was no longer on and it was no longer handing out IP's to Ethernet clients. The power light is solid, internet light lights up when connected to my modem and flashes intermittently, and the Ethernet lights light up in response to connecting clients. I have attempted to hard reset the router to no avail. I also tried statically assigning 192. 168. 0.120 to my NIC to see if I could access the router config but that doesn't work either. It's almost as if the default ip address and range for the LAN on my router have changed and DHCP was turned off.
For the last several months, but progressively worse, my internet drops due to the DNS Server not responding. This happens across my whole network and the only fix I can come up with is to reset the router every time it does this. At this point I am thinking a new router is in order (but do not have the money atm), I am using a D-Link DIR-625 V. C1 Firmware 3.08 router and a Motorola SB6120 modem. Is there another permanent fix for this problem is or my router on it's last legs? Would setting a new DNS Server on my router work?
A few days ago my mother's computer suffered a burned out motherboard ethernet adapter due to the PPPoE box on the roof of our building getting hit during a thunderstorm (apparently). I decided to buy a separate ethernet card, as her computer had a PCI slot free at the time - why not use it? I ended up buying a cheapo D-Link DFE-520TX. Anyway, I took it home, booted up the computer (running Windows XP with SP2 I believe) and installed the drivers supplied with the card. The instructions clearly stated to install drivers first, then physically install the card. I did so - everything went smoothly, popped the card in, booted the computer up again. Card was found, no problems. Except when I plugged the network cable in, the card remained idle. No blinking green activity light, no reaction from the Local Area Connection on the computer, nothing. Device Manager/Properties tells me everything is working just fine - except that the card itself doesn't "work". Took it back to the store, they plugged it into their test machine - everything worked just fine, green light blinking, internet access, etc. I've since tried uninstalling and reinstalling the device, swapping PCI slots (the second one is taken up by a Sound Blaster Pro). No dice - the audio card works in either slot, the network card doesn't work anywhere.
My buffalo link station 3t was giving me problems due to avg firewall blocking access to my drive. so switched it off to work . now that the drive is working but now when i click to access the drive the back ground on the desktop goes black on windows 7 its a acer laptop and the graphics are blurey.
I am currently having problems accessing outlook live, using MSN Messenger or Facebook when at home. The problems cosist of being unable to load certain pages properly and being unable to connect at all to the MSN network.
Whenever I try to play an online game like Warcraft 3, the router stops responding to my computers sent packets. While still in the game, if I try to connect to a website the page isn't found. However, soon after exiting the game, I can access websites again.
The entire time while I was having the problem, I'm shown as still connected to the internet (not even showing the yellow ! sign for limited access). I ran a ping test to google.com while experiencing the problem and it said it could not find it. I checked the status of the connection, and it appears as though my computer is still sending packets normally, but the router is just unresponsive.
I have a Cisco 1841 router equipped with a serial interface and an ISDN BRI interface installed.The router has stopped suddenly responding and no display is beig obtained when trying to access the router through the console port.I have check the router LEDs and they display the following:
SYS PWR - It is showing solid green which means the router is receiving power, and the internal power supply is functional. It is not blinking green as is normally the case when the router is rebooted.
SYS ACT - It is showing solid green. It should normally be blinking green showing that the system is actively transferring packets and monitoring internal activity. CF - It is showing solid green. It should normally be off indicating that the CompactFlash memory card is not being accessed or be blinking green showing that the CompactFlash memory card is being accessed.
I have even replaced the CompactFlash memory with another one and removed the two WICs installed but the router still fails to initialise properly and respond through the console terminal program. how the router can be further troubleshooted or if it can be repaired?
Use wireless router and can connect to internet on laptop. When trying with PC (windows xp software), I can't connect. Ran diagnostic, result: Your computer appears to be correctly configured, but the device or resource (web proxy) is not responding.
I have this LinkSys by Cisco Wireless-N gigabit model# WRT310N router that quit functioning in a weird way. (it has Wi-Fi protected setup on it, not sure if that would effect it, it's disabled) I have a friend in the condo above mine, but i have a Dial-Up internet conn and can afford a good broadband internet conn. a co-worker gave this router to me, saying he didn't need it for his network at home. It was still in original box, unopened, So it was intact. i set it up so i can play Age of Empires 1 (you probably haven't heard of it, it's a single player or Multi-player TCP/IP comp-to-comp game from '96) and i used a gigabit wired conn, he used wireless-N laptop. We played a few games, on the 4th game, it locks up about 12 mins into the game. we try again, the comp not even recognize each other. Knowing a little about networking from watching the IT guys at work, i tried the PING command in cmd.exe in vista, it will ping the router, not the other laptop. same thing on the other laptop pinging my desktop. i unplugged the router, and went to sleep.Next day, i got back from work, called the friend, plugged the router back in, and it work for another 14 mins, no ping. possibilities? the LinkSys website doesn't give answers, so what is it?Further Edit: my Gigabit conn is going through a 3 ft CAT5e cable, and the wireless-N trans rate is set to 130 Mbps.
My internet is hooked via cat6 ethernet cable to my Cisco/linksys E2000 Router.Sometimes the net works fine, and there are no problems. Other times, after 10 minutes or so after booting up, net pages stop loading. The small yellow exclamation mark appears, and every time I run the troubleshooter, the same info comes back to me - DNS server is not responding. Until I restart again the internet wont work, but on occasion things seems to fix themselves and continue working until I shut down.This problem never happened before i moved back home. In my previous apartment we had comcast cable and it ran without a hitch. Since I have been home this DNS problem has persisted, but only on my computer. I run the only windows PC in the house - my family is mac happyThings I have trie - I have tried "netsh winsock reset" in the command prompt, I have run virus and spyware scans several times over, Have reset the modem, router, and the Mac which hosts my 'home network'-come to think of it, I haven't tried reinstalling my LAN driver, but that seems insignificant b/c it has never once had problems.
I have E1200 wireless router and it was working nicely for the whole last year with 2 mac laptops hooked up on it. About 2 months ago there were 1 mac,1 win laptop and a network printer. And again, it was working just fine at the beginning. I'm not sure when exactly it happened first, but now after working couple of hours internet gets off and router stops responding. If I try to reconnect to it from my laptop I just see an error message saying something about "Connection timeout". Also I don't know does it have something to do with the network printer, btw it's connected to the router via ethernet cable not wireless. Anyway, the only solution I've found so far is power off the router for a couple of secs and power it on again, which is obviously not a solution at all, it's annoying and not practical. The time it works fine before it dies is also not fixed, it might be even 10 hrs of working and sometimes only 1-2 hrs. My other suspicion is firmware. I upgraded it almost at the same time when new laptop and printer showed up. Maybe I have to downgrade it, but I couldn't find older version of it. It was HW v. 1, SW v.1.0.00, and now it's HW v.1, SW v.1.0.03.
I have a wireless router and I'm trying to user UPnP feature. of course it is enble in the router.
It's working one and after it stop working, looks like the router is not responding anymore. If I got on the web interface of the router, I loging, on the first web page I press save changes, even if I didn't change anything, the UPnP feature work again.
Looks like a timeout occure or something like that. Is there a way to wake up the router without having to go on the web interface? Why it's stop working?
Bought a Cisco RVL200 (latest firmware included - I checked), and I've set it up to serve as the gateway/firewall for my home network. I also intend to use the VPN functionality when travelling as well as serving up content from a web server behind it. All of this seems to work the way it is intended (after quite a bit of fiddling).
The problem however is that if it comes under any sort of load it simply stops responding - physically it looks alright with the expected leds being lit, just as it would when functioning normally. It does not display the management interface, nor does it even respond to ping (which it does when it works). If I start up a bittorrent client on any of the machines on the internal network and add a torrent to something popular like Ubuntu Linux it'll usually start downloading and then after 5-15 minutes the RVL200 will have stopped responding. Tried adding QOS settings to limit the computer running the client or downprioritize this type of traffic, but that does not seem to have any effect.
I setup my Windows 8 desktop for a PPTP VPN server so I can connect my iPhone 5 to it.Using the Cisco Connect Firmware, as I was having internet speed issues with the Smart Wi-Fi Firmware and I wasn't loving the interface of the Smart Wifi Firmware anyway.According to the router the firmware is up to date. All three VPN settings are enabled.PC is set to a static IP internally. 192.168.1.116 to be precise.PPTP port forwarding (1723) is set to the PC's static IP, though I have tried without port forwarding and it didn't work either.If I have my iPhone connected to the wireless network and point it to the internal IP address of the PC, I can connect to the VPN.If I bypass my router and hook my desktop directly to the modem (and point my iPhone to the IP that gets assigned to my desktop from my ISP) I can connect to the VPN.But if I have everything hooked up normally and try to connect to the VPN from my iPhone (using the IP address my ISP assigned to the router), I get a PPTP server not responding error.
I am trying to set up ADSL and WiFi in a country home. I have bought a DLink DSL-2640 modem-router for this. The device is connected to the ADSL, everything works fine. The device has a WiFi AP capability - I have set up the WiFi and I am accessing the network from 2 different iPads, 2 PCs and an Android phone. After a few hours of work I begin to notice that one of the iPads is taking to long to load pages - it even can't load the router's web interface. This goes on for 5-10 minutes or so, then it passes away. Same stuff happens to Android, but rarer. PC has this problem occasionally also, but rarest of all.
I am assuming that this is a problem of the device - ADSL and WiFi might be too much for it. I got a dedicated WiFi router (TP-Link WR740N), connected it to the DLink and turned off WiFi on the D-Link.
Same stuff happens. After a while the Internet stops responding - I can't load the router's web interface. Goes on for 2-10 minutes and passes. WiFi is functional, I can disconnect and connect a device, device obtains an address through DHCP.
I updated both devices to the latest official firmware. I tried switching WiFi channels, switched the router to g-only mode. EM interference is very unlikely since it's a country home and there are no wifi networks around.
I am setting up a Cisco 1941 series router for our department in Denmark. As we quickly relised we had to reset the router to it's defult settings. As we comunicated with the router thorugh HyperTerminal, the router asked me to restart. After we did so the router only sends encrypted messages wich is unreadable. We neither get any respons in the terminal when we try to write commands back to the router.We have tried to use different terminal programs as well as the USB port on the router.
I had tried over a year ago to set up wireless in my home and failed miserably.I thought I would retry.It says Im connected but do not have internet access. It says the DNS is not responding.
Microsoft Windows [Version 6.1.7601] Copyright (c) 2009 Microsoft Corporation. All rights reserved.
I'm trying to set up a VPN connection with my Windows 7 machine at home any my Windows XP laptop. The Windows 7 is the server, and my XP is the client. The machine at home is behind a DIR-600 router. I've setup the normal VPN connections at both the machines, and have also forwarded port 1793 on the Windows 7 (following the usual steps: static ip etc). I also exempted the said port from the windows firewall.
I was able to connect this mornin, and suddenly it just didn't work. I checked and it said DNS server isn't responding. tried using the Open DNS 208.67.222.222, 208.67.220.220 But it is still not working and showing the same error.
i'm having a problem with my router. i connect broad band line direct to my router and then i connect router to computer with another cable, wifi router work fine i can connect my wifi device (mobile & tab) but in my pc its not working. line drops in my pc but same time my wifi works fine. i change the cable between router & pc but still not works. so far i understand my internet line & router works fine.
