Nothing that will blow your skirt up, but here it is the log:
*) changed “wireless registration table entry count” snmp oid to 1.3.6.1.4.1.14988.1.1.1.4.0
*) fix 5&10MHz channel support for 11n cards
I figured they would debut the new wireless RB750 at this years MUM, and perhaps I have additional evidence to support this. A new 750 arrived this week sporting an interesting knock out on the side…is that for airflow or an antenna 
See it over there on the right
Ahhh, yes. There it is
Perhaps this is for a USB port?
USB?
Perhaps for hooking up a hard drive for an instant NAS? (Thanks for the possible clue James 
) Perhaps it will also accept a 3G USB connection?
Is that closer Normands?
Here’s some shots of the PCB:
New PCB
Old PCB
Closer...you can see where the, probable, USB header is and some missing SMDs.
Something looks familiar on there…can you spot it?
My site is on there...hope you caught that...
It seems to be becoming more popular to use port knocking applications these days. Port knocking is sending connection attempts to a device in a specific pattern to unlock a specific service.
An example would be to send 3 UDP connection attempts to a Mikrotik router all on different port numbers in a specific order. It will then add your IP address to a specific address list so you can winbox in.
I found an application out there for windows that does it, but it only did UDP…I wanted one that would do both. I also wanted the ability to send text with the UDP connections to do L7 matches on it.
So, I wrote my own:
There is no charge for awesomeness...or attractiveness.
Basically what you do is fill out the entries, IP address, description and at least one knock port.
Fill out protocol type, the port you want to knock on and if it is UDP, you can optionally add some text to send with the message!
Here’s the program compiled and ready to go : PortKnock.zip (32)
Here’s the code:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 | #include <ButtonConstants.au3>
#include <ComboConstants.au3>
#include <EditConstants.au3>
#include <GUIConstantsEx.au3>
#include <GUIListBox.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>
#include <file.au3>
#include <Array.au3>
;knock it like it's hot
$g_IP = ""
$g_port = ""
$ListLocation = 1
;check config file
if not FileExists(@ScriptDir & "\config.txt") Then
;create it with dummy info
$file = FileOpen(@ScriptDir & "\config.txt", 1)
If $file = -1 Then
MsgBox(0, "Error", "Unable to open file.")
Exit
EndIf
FileWriteLine($file, "Description;IPAddress;UDP;Port;GregRocks")
FileClose($file)
EndIf
ReadConfig ()
; Start The TCP Services
;==============================================
TCPStartUp()
UDPStartup()
;###########################################
#Region ### START Koda GUI section ### Form=C:\Documents and Settings\greg\Desktop\autoit\portknock\Form1.kxf
$Form1_1 = GUICreate("GregSowell.com Port Knock", 441, 434, 192, 114)
$List1 = GUICtrlCreateList("", 24, 16, 393, 201)
$CBO1 = GUICtrlCreateCombo("None", 33, 280, 65, 25)
GUICtrlSetData(-1, "TCP|UDP")
$In1Port = GUICtrlCreateInput("", 121, 280, 105, 21)
$In1Text = GUICtrlCreateInput("", 233, 280, 177, 21)
$Label1 = GUICtrlCreateLabel("1", 9, 280, 10, 17)
$BTNKnock = GUICtrlCreateButton("Knock", 96, 400, 73, 25, $WS_GROUP)
$BTNAdd = GUICtrlCreateButton("Add/Update", 182, 400, 73, 25, $WS_GROUP)
$BTNDelete = GUICtrlCreateButton("Delete", 272, 400, 73, 25, $WS_GROUP)
$InIP = GUICtrlCreateInput("", 40, 234, 161, 21)
$Label2 = GUICtrlCreateLabel("IP", 8, 234, 14, 17)
$Label3 = GUICtrlCreateLabel("Type", 44, 259, 28, 17)
$Label4 = GUICtrlCreateLabel("Port", 124, 259, 23, 17)
$Label5 = GUICtrlCreateLabel("Text", 238, 259, 25, 17)
$CBO2 = GUICtrlCreateCombo("None", 33, 309, 65, 25)
GUICtrlSetData(-1, "TCP|UDP")
$In2Port = GUICtrlCreateInput("", 121, 309, 105, 21)
$In2Text = GUICtrlCreateInput("", 233, 309, 177, 21)
$Label6 = GUICtrlCreateLabel("2", 9, 309, 10, 17)
$CBO3 = GUICtrlCreateCombo("None", 33, 341, 65, 25)
GUICtrlSetData(-1, "TCP|UDP")
$In3Port = GUICtrlCreateInput("", 121, 341, 105, 21)
$In3Text = GUICtrlCreateInput("", 233, 341, 177, 21)
$Label7 = GUICtrlCreateLabel("3", 9, 341, 10, 17)
$CBO4 = GUICtrlCreateCombo("None", 33, 367, 65, 25)
GUICtrlSetData(-1, "TCP|UDP")
$In4Port = GUICtrlCreateInput("", 121, 367, 105, 21)
$In4Text = GUICtrlCreateInput("", 233, 367, 177, 21)
$Label8 = GUICtrlCreateLabel("4", 9, 367, 10, 17)
$InDesc = GUICtrlCreateInput("", 253, 234, 161, 21)
$Label9 = GUICtrlCreateLabel("Desc", 221, 234, 29, 17)
GUISetState(@SW_SHOW)
#EndRegion ### END Koda GUI section ###
PopList()
While 1
$nMsg = GUIGetMsg()
Switch $nMsg
Case $BTNAdd
;
$foundOne = 0
for $y = 1 to $aConfig
;loop through until we find the correct line
if StringLeft($aConfig[$y], StringInStr($aConfig[$y], ";") - 1) == GUICtrlRead($InDesc) Then
; we have our match, update
$foundOne = $y
EndIf
Next
if $foundOne == 0 Then
;we didn't find a match above, so write it to file, then reload listbox
$tempNewEntry = GUICtrlRead($InDesc) & ";" & GUICtrlRead($InIP) & ";" & GUICtrlRead($CBO1) & ";" & GUICtrlRead($In1Port) & ";" & GUICtrlRead($In1Text)
if GUICtrlRead($CBO2) <> "None" Then
;add 2
$tempNewEntry = $tempNewEntry & ";" & GUICtrlRead($CBO2) & ";" & GUICtrlRead($In2Port) & ";" & GUICtrlRead($In2Text)
if GUICtrlRead($CBO3) <> "None" Then
;add 3
$tempNewEntry = $tempNewEntry & ";" & GUICtrlRead($CBO3) & ";" & GUICtrlRead($In3Port) & ";" & GUICtrlRead($In3Text)
if GUICtrlRead($CBO4) <> "None" Then
;add 4
$tempNewEntry = $tempNewEntry & ";" & GUICtrlRead($CBO4) & ";" & GUICtrlRead($In4Port) & ";" & GUICtrlRead($In4Text)
EndIf
EndIf
EndIf
_ArrayAdd($aConfig, $tempNewEntry)
Else
;does exist, and write over line $y
$aConfig[$foundOne] = GUICtrlRead($InDesc) & ";" & GUICtrlRead($InIP) & ";" & GUICtrlRead($CBO1) & ";" & GUICtrlRead($In1Port) & ";" & GUICtrlRead($In1Text)
if GUICtrlRead($CBO2) <> "None" Then
;add 2
$aConfig[$foundOne] = $aConfig[$foundOne] & ";" & GUICtrlRead($CBO2) & ";" & GUICtrlRead($In2Port) & ";" & GUICtrlRead($In2Text)
if GUICtrlRead($CBO3) <> "None" Then
;add 3
$aConfig[$foundOne] = $aConfig[$foundOne] & ";" & GUICtrlRead($CBO3) & ";" & GUICtrlRead($In3Port) & ";" & GUICtrlRead($In3Text)
if GUICtrlRead($CBO4) <> "None" Then
;add 4
$aConfig[$foundOne] = $aConfig[$foundOne] & ";" & GUICtrlRead($CBO4) & ";" & GUICtrlRead($In4Port) & ";" & GUICtrlRead($In4Text)
EndIf
EndIf
EndIf
EndIf
;write array to file
_FileWriteFromArray(@ScriptDir & "\config.txt", $aConfig,1)
ReadConfig()
PopList()
Case $BTNDelete
;
for $y = 1 to $aConfig[0]
;loop through until we find the correct line
if StringLeft($aConfig[$y], StringInStr($aConfig[$y], ";") - 1) == GUICtrlRead($InDesc) Then
; we have our match, update
_ArrayDelete($aConfig, $y)
_FileWriteFromArray(@ScriptDir & "\config.txt", $aConfig,1)
ReadConfig()
PopList()
EndIf
Next
Case $BTNKnock
;
$g_IP = GUICtrlRead($InIP)
$g_port = GUICtrlRead($In1Port)
$g_text = ""
$g_text = GUICtrlRead($In1Text)
if GUICtrlRead($CBO1) == "TCP" Then
TCPKnock()
Else
UDPKnock()
EndIf
sleep(300)
if GUICtrlRead($CBO2) <> "None" Then
$g_port = GUICtrlRead($In2Port)
$g_text = ""
$g_text = GUICtrlRead($In2Text)
EndIf
if GUICtrlRead($CBO2) == "TCP" Then
TCPKnock()
Elseif GUICtrlRead($CBO2) == "UDP" Then
UDPKnock()
EndIf
sleep(300)
if GUICtrlRead($CBO3) <> "None" Then
$g_port = GUICtrlRead($In3Port)
$g_text = ""
$g_text = GUICtrlRead($In3Text)
EndIf
if GUICtrlRead($CBO3) == "TCP" Then
TCPKnock()
Elseif GUICtrlRead($CBO3) == "UDP" Then
UDPKnock()
EndIf
sleep(300)
if GUICtrlRead($CBO4) <> "None" Then
$g_port = GUICtrlRead($In4Port)
$g_text = ""
$g_text = GUICtrlRead($In4Text)
EndIf
if GUICtrlRead($CBO4) == "TCP" Then
TCPKnock()
Elseif GUICtrlRead($CBO4) == "UDP" Then
UDPKnock()
EndIf
ToolTip("knock complete")
sleep(5000)
ToolTip("")
case $GUI_EVENT_PRIMARYUP
;mouse was pressed, lets check to see if they choose a new item in list
;check which list item is highlighted
$tempList = GUICtrlRead($List1)
;see if this is new item chosen or just a click somewhere on the prog
if $tempList <> $ListLocation and $tempList <> "" Then
;change, update everything
;set list location to the temp value
$ListLocation = $tempList
;clear the entries
GUICtrlSetData($InDesc,"")
GUICtrlSetData($InIP,"")
GUICtrlSetData($CBO1,"None")
GUICtrlSetData($In1Port,"")
GUICtrlSetData($In1Text,"")
GUICtrlSetData($CBO2,"None")
GUICtrlSetData($In2Port,"")
GUICtrlSetData($In2Text,"")
GUICtrlSetData($CBO3,"None")
GUICtrlSetData($In3Port,"")
GUICtrlSetData($In3Text,"")
GUICtrlSetData($CBO4,"None")
GUICtrlSetData($In4Port,"")
GUICtrlSetData($In4Text,"")
;set the entries
for $y = 1 to $aConfig[0]
;loop through until we find the correct line
if StringLeft($aConfig[$y], StringInStr($aConfig[$y], ";") - 1) == $ListLocation Then
; we have our match
$ConfigLine = $aConfig[$y]
EndIf
Next
;fill in all the boxes
GUICtrlSetData($InDesc, $ListLocation)
GUICtrlSetData($InIP, StringMid($ConfigLine,StringInStr($ConfigLine,";") + 1, StringInStr($ConfigLine,";",0,2) - StringInStr($ConfigLine,";") - 1))
GUICtrlSetData($CBO1, StringMid($ConfigLine,StringInStr($ConfigLine,";",0,2) + 1, StringInStr($ConfigLine,";",0,3) - StringInStr($ConfigLine,";",0,2) - 1))
GUICtrlSetData($In1Port, StringMid($ConfigLine,StringInStr($ConfigLine,";",0,3) + 1, StringInStr($ConfigLine,";",0,4) - StringInStr($ConfigLine,";",0,3) - 1))
GUICtrlSetData($In1Text, StringMid($ConfigLine,StringInStr($ConfigLine,";",0,4) + 1, StringInStr($ConfigLine,";",0,5) - StringInStr($ConfigLine,";",0,4) - 1))
$tempstring = StringReplace($ConfigLine, ";", ";")
$tempCount = @extended
if $tempCount > 4 Then
;we have a second set
GUICtrlSetData($CBO2, StringMid($ConfigLine,StringInStr($ConfigLine,";",0,5) + 1, StringInStr($ConfigLine,";",0,6) - StringInStr($ConfigLine,";",0,5) - 1))
GUICtrlSetData($In2Port, StringMid($ConfigLine,StringInStr($ConfigLine,";",0,6) + 1, StringInStr($ConfigLine,";",0,7) - StringInStr($ConfigLine,";",0,6) - 1))
GUICtrlSetData($In2Text, StringMid($ConfigLine,StringInStr($ConfigLine,";",0,7) + 1, StringInStr($ConfigLine,";",0,8) - StringInStr($ConfigLine,";",0,7) - 1))
EndIf
if $tempCount > 7 Then
;we have a third set
GUICtrlSetData($CBO3, StringMid($ConfigLine,StringInStr($ConfigLine,";",0,8) + 1, StringInStr($ConfigLine,";",0,9) - StringInStr($ConfigLine,";",0,8) - 1))
GUICtrlSetData($In3Port, StringMid($ConfigLine,StringInStr($ConfigLine,";",0,9) + 1, StringInStr($ConfigLine,";",0,10) - StringInStr($ConfigLine,";",0,9) - 1))
GUICtrlSetData($In3Text, StringMid($ConfigLine,StringInStr($ConfigLine,";",0,10) + 1, StringInStr($ConfigLine,";",0,11) - StringInStr($ConfigLine,";",0,10) - 1))
EndIf
if $tempCount > 10 Then
;we have a fourth set
GUICtrlSetData($CBO4, StringMid($ConfigLine,StringInStr($ConfigLine,";",0,11) + 1, StringInStr($ConfigLine,";",0,12) - StringInStr($ConfigLine,";",0,11) - 1))
GUICtrlSetData($In4Port, StringMid($ConfigLine,StringInStr($ConfigLine,";",0,12) + 1, StringInStr($ConfigLine,";",0,13) - StringInStr($ConfigLine,";",0,12) - 1))
GUICtrlSetData($In4Text, StringMid($ConfigLine,StringInStr($ConfigLine,";",0,4) + 1))
EndIf
EndIf
Case $GUI_EVENT_CLOSE
TCPShutdown()
UDPShutdown()
Exit
EndSwitch
WEnd
;###########################################
Func PopList ()
;populate list box
GUICtrlSetData($List1, "")
for $x = 1 to $aConfig[0]
GUICtrlSetData($List1, StringLeft($aConfig[$x], StringInStr($aConfig[$x], ";") - 1))
Next
EndFunc
Func ReadConfig ()
Global $aConfig
If Not _FileReadToArray(@ScriptDir & "\config.txt",$aConfig) Then
MsgBox(4096,"Error", " Error reading log to Array error:" & @error)
Exit
EndIf
EndFunc
;knock functions
Func TCPKnock ()
ToolTip("knocking " & $g_IP & " " & $g_port)
$socket = TCPConnect( $g_IP, $g_port )
TCPCloseSocket($socket)
ToolTip("")
EndFunc
Func UDPKnock ()
ToolTip("knocking " & $g_IP & " " & $g_port)
$socket = UDPOpen($g_IP, $g_port)
if $g_text <> "" Then
$status = UDPSend($socket, $g_text)
EndIf
UDPCloseSocket($socket)
ToolTip("")
EndFunc |
Be sure to check out Jimmys lil write up on UDP port knocking with text
BTW, I just threw this together and haven’t properly tested, so let me know how it goes
So, my good friend Rob was inspired by a line from my last article “Go forth an route”. He came up with several puns of nightmarish perportions…I wanted to share them:
“May all your packets arrive at their destination”
Not too bad:)
“ACK’s not what your router can do for you….”
Waaa waaaa waaaaahhhhhh
“All your SYN’s are forgiven”
I think a clown somewhere just died for that pun.
hehehehehe…Rob, I LOVE these…even though I died a little on the inside from reading them. You guys care to add your worst puns? No pressure Jimmy…hehehe
Super Consultant Powers Activate! I’m going to have a booth at the Phoenix MUM and I’ve got vouchers to hand out ($50 value). I’ll also have your standard marketing propaganda. My favorite will be Tshirts. I’m designing and printing a number of shirts to hand out, which I will also be selling online after the MUM hehehe.
Anyway, back to the point. If you are attending MUM and would like a free voucher then email me via the contact form, or if you already have my email via that, and I’ll shoot you the magic registration # to get you in!
So working for a datacenter, I hear plenty of buzz words…what good sales guy doesn’t work one in every other sentence? One of those phrases you hear is “concurrently maintainable”. What does this mean? It means you can sustain loss in your infrastructure and still be up. We are talking about hardware redundancy.
In our DC if you aren’t doing BGP with us, you would do well to use VRRP…what is VRRP? Here’s wikipedia’s definition. In essence it works like such. You have two of your routers connected to the same layer 2 segment. You have a subnet configured that is /29 or larger. You configure a physical IP on the interfaces, then you create a VRRP interface on each router associated with those connected interfaces. You then assign the same VRRP IP address on both routers to the VRRP interface.
The VRRP router that has the higher priority(default is 100) is the master. The master responds to ARP requests for the VRRP IP. If the master router fails, then the backup router takes over and owns the VRRP IP. Soooo, your default gateway points towards the VRRP IP so that if the master fails and the backup takes over your default route is still valid! There is also a concept of premption. By default preemption will migrate the VRRP IP over to the router with the highest priority.
Here are some examples:
So here’s our demo config:
So what happens when one of our providers fail?
Provider fails on one link. The backup guy takes over the VRRP IP. Our default route points to 10.0.0.1 so we still route out!
We drop half of our network gear, but have no fear. The ISP was pointing towards 10.0.0.6 to route to me, so all is good in the hood.
Router 10.0.0.4
Create the VRRP interface *assign it higher priority – default is 100*:
1 2 3 4 | /interface vrrp
add arp=enabled authentication=none comment="" disabled=no interface=ether1 \
interval=1 mtu=1500 name=vrrp1 on-backup="" on-master="" password="" \
preemption-mode=yes priority=150 vrid=1 |
Configure our IPs:
1 2 3 4 5 | /ip address
add address=10.0.0.4/29 broadcast=10.0.0.7 comment="" disabled=no interface=\
ether1 network=10.0.0.0
add address=10.0.0.6/32 broadcast=10.0.0.6 comment="" disabled=no interface=\
vrrp1 network=10.0.0.6 |
Our default route:
1 2 3 | /ip route
add comment="" disabled=no distance=1 dst-address=0.0.0.0/0 gateway=10.0.0.1 \
scope=30 target-scope=10 |
Router 10.0.0.5
Create the VRRP interface:
1 2 3 4 | /interface vrrp
add arp=enabled authentication=none comment="" disabled=no interface=ether1 \
interval=1 mtu=1500 name=vrrp1 on-backup="" on-master="" password="" \
preemption-mode=yes priority=100 vrid=1 |
Configure our IPs:
1 2 3 4 5 | /ip address
add address=10.0.0.5/29 broadcast=10.0.0.7 comment="" disabled=no interface=\
ether1 network=10.0.0.0
add address=10.0.0.6/32 broadcast=10.0.0.6 comment="" disabled=no interface=\
vrrp1 network=10.0.0.6 |
Our default route:
1 2 3 | /ip route
add comment="" disabled=no distance=1 dst-address=0.0.0.0/0 gateway=10.0.0.1 \
scope=30 target-scope=10 |
This is great for the WAN side, but is quite often used for the LAN also!
You can also run two separate VRRP groups on a single interface which will allow you to load balance with redundancy.
Go forth and route my peoples!
