I need to register a couple internet domain names.

What are the lowest priced internet domain name registrars?

Hello ,

I have 2 questions about timestamp ;

1. I have try to convert time stamp value to normal time but it was returned anormal dates :) what is the format of this TS val ?
2. As far as i read on the http://www.networksorcery.com/enp/protocol/tcp/option008.htm 

This field is only valid if the ACK bit is set in the TCP header.

but nearly all SYN packets in normal traffic not a DDOS has TSval  while ack was not set

Understanding IPv6  address range

I have done some reading online about IPv6. I want to know if IPv6 global unicast address is the equivalent of IPv4 Public address.

- what is the range dedicated just for Global unicast addresses ?
in the examples I have seen about IPv6 Global address usually starts with 2000,2001.2002. are there more than that ?

-Is there any Global Multicast Address ? if so , then What is the Range
-Is there any Local Multicast address ? if so , then what is the range?




Thank you

Hello ,

We are facing with a strange issue  , first of all i need to be sure  , if packet marked with SACK_PERM then does it really need to have TS , WS ?

there is nothing between SACK and MSS values  02 04 05 b4 04 02

0000   a0 36 9f 55 7c aa dc 38 e1 ac 9b 89 08 00 45 00  .6.U|..8......E.
0010   00 3c 7d 23 40 00 2e 06 47 3c 67 f6 c9 98 b9 09  .<}#@...G<g.....
0020   9d c4 81 5b 00 50 39 00 25 a3 00 00 00 00 a0 02  ...[.P9.%.......
0030   72 10 bb 2c 00 00 02 04 05 b4 04 02 08 0a 59 97  r..,..........Y.
0040   58 80 00 00 00 00 01 03 03 07                    X.........

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Before Sack_Perm there is additional :      02 04 05 b4   01 01 04 02

0000   a0 36 9f 55 7c aa dc 38 e1 ac 9b 89 08 00 45 00  .6.U|..8......E.
0010   00 30 a6 03 40 00 7e 06 c9 84 bc 47 5a 47 b9 b6  .0..@.~....GZG..
0020   bc fa c4 22 00 35 64 18 ae 7c 16 a5 e2 49 70 02  ...".5d..|...Ip.
0030   20 00 06 04 00 00 02 04 05 b4 01 01 04 02         .............

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what is this between MSS & SACK options in the packet ?

My issue is two fold, why can I PING an IP of a device that isn't on the network and I can't print.

I have a Datamax label printer that I just created a device description for and assigned it a new IP address, this printer is plugged into a switch, the switch is plugged into a firewall that goes through to another firewall before it gets to the IBM i.  We have two partitions, PROD and TEST.  I copied the device description and out queue from TEST to PROD to ensure they were identical on both sides.  

This printer works perfectly in TEST.  When plugged into the network I am able to print to it, I can PING its IP, TELNET to it and the trace route returns the three expected entries.  When I vary off the device and unplug it from the network I cannot PING it from the IBM i nor the network, I cannot TELNET to it and the trace route only returns the two expected entries.  All as it should be.  

However, in PROD I am unable to print to the device.  When I release a spool file it goes right to RDY status and the writer gets error CPD337F .  I have verified that the port and IP are correct, I have verified that the remote device is not busy, I have verified that the printer is on line.  I can PING its IP from both the IBM i and the network but I cannot TELNET to it and the trace route returns only two of the three expected entries.  When I vary off the device and unplug it from the network I can still PING it from the IBM i but not from the network, I …

I have a classroom of PC's that I need to connect an IP printer to and I'd like to do it quickly.
I'm conducting a training session so I have no admin rights.  But I can CONTROL PANEL=>Add a printer=>Create a new port=>STandard TCPIP port, etc. etc.
How can I make this process quicker so that I don't have to spend so much time at each pc?
I'm thinking some sort of batch file?

I have disabled the Windows Firewall of my Windows 2012 R2 server, When I telnet to localhost 445, it is ok, but when I tenet to the actual IP 445, it fails.

Anyone have idea of why?

I need the tcp/445 for remote log pulling from a SIEM connector.

Thanks.

I am connected Biometric Attendance Machine to my system using the Ethernet cable. I assigned IP of the biometric machine and computer system.
When I am doing ping biometric machine I am getting error " Destination Host Unreachable "

I set upIP  of the machine is:
IP: 192.168.10.201
Subnet Mask: 255.255.255.0

Where as sytem IP
IP: 192.168.10.151
Subnet Mask : 255.255.255.0
Default Gateway : 192.168.10.1


I tried by USB connection too but getting failed to connect in ZKTECO BIOMETRIC Software.
System-IP-Configuration.png

First, If I am correct:
Standard Access-list  can match traffic based on Source IP address only
Extended Access-list can match traffic based on Source/Destination IP address , port number, protocol, etc...

well, there is also  Named Access-list. We can have Standard Named Access-list and Extended Named Access-list
  Is Standard Named Access-list similar to Standard Access-list, it can match traffic based on Source IP address only ?
Is Extended Named Access-list  similar to Extended  Access-list ,it can match traffic based on Source/Destination IP address , port number, protocol, etc. ?

Thank you

Hello Everyone!

We had some security cameras installed and the installer asked me to open port 8000 for the dvr.  We have a Sonicwall 1260 Pro and I followed the instructions for port forwarding.  I created the service for both TCP/UDP, port 8000 and then created the group.  I used the public server wizard to allow public access to the camera ip.  After everything was complete I used the site, http://www.yougetsignal.com/, to check if port 8000 was open.  Unfortunately, the port is still closed.  I'm stuck figuring what I could be doing wrong.  We do have 2 static ips for the site.  The other ip is used for the fax machine line.  i don't know if this could cause the problem.  Any help is appreciated.

Router: SonicWall 1260 Pro
ISP: Cox
WAN: 72.205.202.66
Camera IP: 192.168.168.62
Port: 8000
img.png

We have an odd situation.

It's a hodgepodge network in a franchisor's location.

It's technically administered from head office on the other side of the country but they get me to do some of the work as I'm less annoying than the main IT.

Windows Server 2012 peer-to-peer system

#1. A windows 7 Professional station gave hard drive warnings (failure imminent) and infection notices
#2. Took station, cloned drive onto SSD
#3. autologon for computer was now erroring out. Had no idea what old password was, created new one with autologon in the registry
$4. Disinfected computer via Malwarebytes and installed Barkly endpoint
#5. Find out that the server is used to access 3 shared folders via peer to peer on the station and that it can't access the shares

At this point I figure that the issue is simply related to the password change, but no.

The server is unable to ping the station, either by name or by ip address. However, the station can ping the server by both name and ip address.

It looked to me as if DNS was incorrectly configured on the server (typo), so I fixed. (192.163.0.1 to 192.168.0.1)

#1. I've tried repair network on both.
#2. ipconfig /flushdns on both
#3. rebooted one or both after each or every other change
#4. turned off homegroup on station
#5. changed station network type from home to work
#6. created hosts file entry for station name to ip address
#7. tried to ping TCP/ip 6 address (no go)
#8. checked for saved credentials on the …