IPv6 Proxies

Sunday, April 26, 2020

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Network scanner that always runs? Does it exist?

I'm looking for a program that continuously scans a set of subnets for any open TCP/UDP ports (at a low/configurable rate) or ICMP messages (any and all) - and feeds it to either something parse-able or something like an SQL. Google has delivered NMAP and a "super elite port scanners". I suspect NMAP might be a bit overkill and aggressive and still needs programming to deal with (which is fine).

Or has anyone seen script/source(s) (of basically any language) that would go a long way to get there? This is to detect misconfigurations and such. It does not need any detection of what actually runs there. Even half-way suggestions are welcome.

Anyconnect Issue from Mac

\*To begin with, for the VMware stuff I am talking about, I do not use hostnames for the browser connections, and connect with the actual ip, (i.e.* https://192.168.1.36/ui).\**

I read reddit all the time for help on issues, but I rarely post, but I'm at a stopping point. I really need help and google/reddit/everything else aren't doing anything.

A couple of years ago I migrated our corporate environment from an ASA 5510 to a Cisco Firepower 2110 with FMC. We've always used Anyconnect as the client obviously. I run a couple of Mac's, (and am the only user in the company that does, the rest of my IT Team use Windows), and Anyconnect has run flawlessly for years. Yesterday, during the middle of a VMware migration, (we setup a new VMware cluster and installation and I was migrating all the VM's from the old hosts to the new), I plugged my Macbook into my wired connection and my connection through the VPN went screwy. I all of a sudden could not access my ILO screen's, the VMware host screen's or any other intranet site at work, (FMC, Cisco Wireless Controller, Sharepoint, our time and attendance, etc). Regular internet traffic was still working. Obviously, I checked the status of the Anyconnect client, (it had reconnected).

I began really testing this, so, as stated above I connect with IP addresses, not hostnames for VMware, so, I assumed this was not a DNS issue, but still tested that. I can ping everything, via IP address or hostname. It all works. I can RDP across Anyconnect, (which is how I finished the migration btw), I can telnet and SSH to all devices, including my VMware ESX systems. I can browse to the intranet to a non port 80 or 443 address through a web-browser, (i.e. the vSphere Server Appliance configuration page is at https://xxx.xxx.xxx.xxx:5480 and that works flawlessly).

So, everything works, except port 80 and 443 from ANY WEB BROWSER. I tried Safari, Edge Chromium, Google Chrome, Firefox, I even installed Tor and that didn't work.

If I do a portscan on one of my devices, 80 and 443 show as open.

If I run my windows 10 VM on Parallels, and connect through the Anyconnect VPN, it works fine. My other Mac works fine, this is clearly a problem with my primary Mac only.

Things I have done:

A) Create a new location in network preferences

B) Checked the routing tables, (though, everything else works, why would this not be right?)

C) Delete and re-add Wifi

D) Delete NetworkInterfaces.plist, com.apple.wifi.message-tracer.plist,
com.apple.airport.preference.plist, preferences.plist

E) Uninstall and re-install Anyconnect. Also, remove the Anyconnect configuration files, and profile
files. I have tried various versions of this step over and over.

F) Rebooted a million times

G) Googled. Alot.

Again the action that caused this was simply plugging an ethernet cable in while I was connected to the VPN over WiFi.

Any suggestions?

My good friend and fellow Network Admin/Manager suggested I wipe and start over with the Mac. Well, with the whole work from home thing, my time machine backups are not current. Also, WHY is that always a solution? I have thought about calling Cisco and/or Apple, but I have a feeling they will point at each other and not help. Although my inclination is to call Cisco first if it comes to that.

Using extraip.com with fortinet

Until today I've been using a pfsense router but decided to switch to fortigate, however until now I am unable to get my extraip.com tunnel working, I've followed the guide at:
https://help.fortinet.com/cli/fos60hlp/60/Content/FortiOS/fortiOS-cli-ref/config/system/gre-tunnel.htm

But I am unable to get it to work, anyone who had experience in setting this up?

How to identify the IP of a remote machine?

So I've got given some homework and I'm not the best when it comes to the networking side of computers lol and I've already asked the teacher a ton of questions and wouldn't want it to affect my work in any way.

Is connecting to the same network as the remote machine and pinging the computer name a method to find out the IP?

Another way I thought of is an IP grabber link of whoever is accessing the remote machine? I know IP link grabbers are easy to spot but this is realistically explained in theory, doesn't matter about how realistic it is as long as it works.

Subnetting Help

Hi all,

I am currently studying Networking course 1 at RMIT. I see some of my peers easily master subnetting and VLSM but I still find it fairly hard. Any recommendations to great Youtube channels or videos that could me with this?

Portforwarding

Anyone knows how to configure port forwarding in this format?, i got all the information. But i don't know which one is which in this format. TCP / UDP Ports 24100 through 24131 TCP / UDP Ports 24500 through 24507 TCP / UDP Ports 24300 through 24331 TCP Port 80 TCP Port 433
these are the ports i want to forward. 198.20.198.110 this is the ip address of the server that i am connecting

Portforwarding

QUESTION - How does a VPN work on a software level in Windows 10

I am wondering how does a VPN "tell/force" applications to use it? Is this done solely through a network adapter? Or are there other parts to how it works?

I can't figure out the right wording to google it sorry.

QUESTION - How does a VPN work on a software level in Windows 10

Suggestions for an SD-WAN provider to replace Meraki

Hi all. We’re currently rocking Meraki MX appliances for our SD-WAN deployment, consisting of 2 data centres and multiple remote branches of varied size. We have a mixture of P2P Ethernet circuits and public internet circuits.

While Meraki has served us well, they are now holding up our IPv6 deployment due to their lack of v6 forwarding capabilities. We’re tired of waiting for them to pull their thumbs out so I’m starting to see what else is on the market before our Meraki subscription is due for renewal.

Do any of you have recommendations for another vendor we should be considering. I’m not particularly clued up on the competition if I’m honest.