IP - Internet Protocol, the most commonly-used set of rules for dispatching data across a large computer network.

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3
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1answer
240 views

IPTABLES Redirect a port to another IP

I have tried several post to configure this redirect but is not working, this is what I need I am receiving packets on port 8080 and I want to redirect the packets to another IP in the same server, ...
1
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1answer
100 views

Can browse to http://localhost/ but can't by IP nor by organization computer name

I'm using windows server 2012, When opening browser, and placing localhost in the URL, i'm able to navigate to the IIS welcome screen successfully. But, if I use the IP or the computer name, I'm ...
-5
votes
2answers
79 views

Difference between connecting from inside and outside a subnet [closed]

Let's say provider granted me IP addresses 10.20.30.1 - 10.20.30.254, so the subnet address is 10.20.30.0 and mask 255.255.255.0. I set my router to 10.20.30.1 and computers to 10.20.30.2 and higher. ...
-3
votes
1answer
118 views

How to prevent users from scanning the network

in my network many peoples spoof mac address, they get mac adresses of online users by scanning the network or the ip address range and using wireshark they get easily any mac address so how to ...
0
votes
2answers
169 views

Set up 4 ip addresses with Subnet mask 255.255.255.252 (30)

i bought 4 ip addresses on OVH. Then they gave me this details: 84.84.184.176/30 Network IP: 84.84.184.176 Broadcast IP: 84.84.184.179 Gateway IP: 84.84.184.178 Netmask: 255.255.255.252 And they ...
0
votes
0answers
63 views

How to implement 1:1 (mapping)NAT like aws does mapping public IP to private IP

I have a machine in private network having it's private IP (lets say 192.168.1.8). I have one server somewhere having public ip (lets say 1.2.1.2) I would like to map this public IP to my private IP ...
1
vote
2answers
43 views

Industry standard SLA for API Gateway static IP change notification?

Assume a "public" API Gateway having a single domain name (ex. api.mybigcompany.com) and a set of 8 static IP addresses assigned to an "East" hosting facility to load balance that domain. A subset of ...
-2
votes
1answer
124 views

My Website Loads Really Slow Using Domain Name, But Fast Using IP

Only fixed line ISP is affected. Others OK. Anyone knows where to start to detect the problem?. DNS Checked using DIG TRACERT NSLOOKUP WHOIS all OK. is there anything i need to check at my hosting ...
0
votes
1answer
33 views

Using IPs for websites also for their name servers [closed]

My new web hosting company (managed VPS) suggests I use the two IPs assigned to my websites as the name servers for those same sites. (One IP is dedicated to one site, the other IP will be shared ...
5
votes
1answer
540 views

Some visitors cannot access my website

I am receiving some reports from different clients in Spain, US and France that they cannot access my website, https://www.ultreyatours.com. They get a ERR_NAME_NOT_RESOLVED error saying the server ...
2
votes
3answers
138 views

Peer to peer communication in complicated multi-subnets LAN

We are developing a P2P application and stucked at the part of making communication between 2 peers which are in same local LAN but 2 different subnets. We know that there are a lot of cases that 2 ...
0
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0answers
56 views

IP design for medium sized network

I have been reading a lot to refresh my memory of ip design set up. It's been years I have to go back to this because I have only had to support a small network and am very similar with setting up ...
0
votes
0answers
38 views

Two ips rotating each time an email is sent - iptables

I have two ips attempting to rotate each time an email is sent from server. The following commands say they are configured: sudo ifup venet0:0 ifup: interface venet0:0 already configured sudo ifup ...
0
votes
2answers
800 views

VPN access to LAN over internet, same device IP on Local and Remote network [closed]

I successfully configured a VPN connection to my Home network over internet following this guide. The current configurations is: Home Network (Remote) LAN: 192.168.1.1 => Router/Modem ...
0
votes
0answers
42 views

Heroku, Github Pages, and GoDaddy — Answer & Explanation Requested

I'm in a bit of an interesting situation. I have two sites that I have deployed in the last two days. The first is my personal website. I have a custom domain name for my site that is linked to my ...
1
vote
0answers
74 views

2 IP cameras with same configuration but different behaviour

I have a Vodafone Station router, and 2 IP cameras connected to it through an Ethernet cable. Both have the same configuration. Both DHCP enabled, one has IP 192.168.1.10 with port 81 and the other ...
1
vote
2answers
134 views

NOIP Static IP address resetting with router [closed]

I need a static IP address to access a client's website, which has a list of whitelisted IPs but rejects all others. This is great, except I have a Dynamic IP address and a Talk Talk router. I ...
1
vote
1answer
31 views

Virtual hosts instead of separate IPs?

I've been wondering if it's possible to host multiple applications using a single port on one IP address. I'm meaning a similar method to Apache Virtual Hosts where you can assign domains/subdomains ...
1
vote
0answers
72 views

Samba shares don't work when mounted via host names from /etc/hosts

I have /etc/hosts file with this line 10.1.17.123 SAMBAWINSERVER I am trying to mount samba shares referencing server by name in the hosts file. I tried to mount it via regular mount command or ...
-2
votes
1answer
98 views

Can't Bind IP Address To Machine [closed]

I have the following IPs but I can't bind them to my machine I am getting errors. Here are the IPs I own. 2607:5300:60:1234::/64 - Came with server 158.69.123.123/29 - ...
0
votes
0answers
74 views

Cisco ASA 5505 access external IP address from internal

Got a bit of a head scratcher. ASA Version: 8.3(1) ASDM Version: 6.3(1) So I have an ASA 5505 with 3 interfaces (Inside, outside and Hosting). The inside interface has the IP range of 10.0.0.X and ...
2
votes
1answer
126 views

ASA Site-to-Site VPN Failure

We have a series of remote sites connecting to our main site using site-to-site VPN over Cisco 5505s. Every remote site works fine, except one. What is unique about the failing one is that its IP ...
1
vote
1answer
58 views

Server abandons set static ip and returns to dhcp given address

I have a few virtualized (ubuntu 14.04 LTS) servers under KVM that I'm trying to move to an ip block other than the one reserved for servers under dhcp (the 10.10.2.0/24 block). I change the ip and ...
-4
votes
1answer
139 views

How can I access a URL through it's IP address? [closed]

http://example.com has the IP address 93.184.216.34. From what I've read about IP addreses and ports, this leads me to believe that appending the port 80 to the end of it (93.184.216.34:80) should ...
2
votes
1answer
53 views

Connecting two clients openvpn

I have two clients one connected to vpn server through vpn and another without vpn. I can ping both the clients from my server but I can't do directly using one client to another. I am adding route ...
0
votes
0answers
48 views

Mutual Authentication - Allow from IP range without client certificate

Is it possible to set SSLVerifyClient: Require but, also allow IP range for users who do not have the client cert? Possibly to use: Order deny,allow Deny from all Allow from xxx.xxx.xxx.xxx ...
16
votes
2answers
2k views

In the output of `last`, what does suffix “.d” after an IP address mean?

In order to find out who was logged in recently on my server I am using the command: There were logins from very strange IP addresses e.g.: username@pc:/home/user$ last username pts/16 ...
0
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0answers
14 views

How does NAT work with more than 2^16 devices? [duplicate]

According to this article, NAT keeps track of which devices to route responses to by specifying a response port that it listens on. For example, when I make a request from a NATted computer, my router ...
0
votes
2answers
127 views

Can I access a NAT addressed host behind a gateway from the WAN side without DNS or VPN (with DNS if it's not possible)?

I have a very simple gateway running a minimal Linux which is serving as an IP router with NAT and DHCP on the LAN, and a static IP on the WAN. The gateway router from the LAN side goes to a big ...
1
vote
1answer
76 views

Get OpenVPN client IP script

My machine get's an IP from OpenVPN server when connecting to the VPN gateway. This is tun0 on Ubuntu. I assume naming might be different for other systems that may connect to OpenVPN gateway. Is ...
0
votes
1answer
29 views

How can I discover the ip ranges for a particular ISP for roadwarrior vpn whitelisting?

I have a road warrior who will be based overseas for several months and will be using a particular ISP. Our VPN is white-listed. Rather than add his IP which changes every few days, is there a way of ...
2
votes
1answer
2k views

Can I redirect/route IP adress to another IP address (windows) [closed]

Can I map 146.112.61.106 IP address to my 127.0.0.1 adress ? so when I type 146.112.61.106 I got redirected to 127.0.0.1 ? (some netsh command maybe ?)
0
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0answers
65 views

IIS 7.5 - Not listening 0.0.0.0:80

I am using IIS 7.5 on Windows Server 2008 R2. From this server, I can access the localhost (standard IIS start page is displayed). But I can't access it from any other machine belonging to the same ...
0
votes
0answers
21 views

Software to confirm accessibility of static IP remotely

I have a desktop machine (OS CentOS 7) with a static IP. Sometimes this static IP is not accessible remotely and I have to run following command to make it available remotely. sudo service ...
0
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0answers
318 views

Reserve current VIP on VM Azure

I'm trying to reserve the current VIP on my Virtual Machine. I don't want to create a new IP I want to use the current VIP. I think this is possible since 1 or 2 months ago. This is the code I ran: ...
1
vote
1answer
108 views

Prevent IP Spoofing on OpenVPN tun

I have a question regarding IP Spoofing and authentication. I have an OpenVPN server in TUN mode with many untrusted clients in the same VPN network, and I was wondering if one client is able to spoof ...
2
votes
0answers
54 views

Is global IP one-to-many communication practical today? [closed]

One-to-many communication over the internet is an enabling technology for many fascinating business and research projects. In principle, IPv4 and IPv6 allow for such communication by the ...
0
votes
1answer
128 views

Reverse DNS query of public IP returns localhost

I'm seeing this unusual behavior with reverse DNS lookups on this public IP Address: 222.253.228.79. Can someone explain what's going on? MXToolbox PTR lookup resolved localhost as the domain ...
0
votes
1answer
3k views

MIKROTIK - Two LANs connected with switch

I have a very simple network. I have two LAN networks (192.168.2.0/24 and 192.168.3.0/24) connected via a router at each site and the routers are connected via a switch. ...
0
votes
1answer
37 views

When is domain resolved for openvpn server?

In my setup I have several OpenVPN clients pointing to a vpn server's dns name. let's use vpn1.mydomain.com as an example. The server's public IP pointed to by that domain would be for example ...
0
votes
1answer
49 views

reserving private ip range

OpenVPN normally uses the private IP range of 10.8.0.0/24. If I wanted to create a vpc of 10.8.0.0/16, How can I prevent the DNS (or is it the DHCP) server for assigning addresses out of OenVPN's ...
-2
votes
3answers
107 views

Use two or more IP addresses to prevent DoS attacks [duplicate]

N00b question But say I had a dedicated server with two IP addresses, and the software (We'll just use Apache as an example) was using both IP address to serve content, in the event of a DoS attack ...
-5
votes
1answer
74 views

What is this IP address format? [closed]

Has anyone ever seen an IP address like this? "2601:304:cd90:78f0:ccec:2be6:b328:7f5d" I asked a coworker to give me his IP so I can add it to the firewall rules, but I've never seen anything like ...
0
votes
0answers
125 views

Browser shows IP and port in the url bar for sub-domain

We have a sub domain name like support.mycompany.com. When we write this in browser, it works as expected but the sub-domain changes to IP and port in the url bar. Why is this happening ? What should ...
0
votes
1answer
130 views

Does ColdFusion use TCP Ports?

I am trying to access a link on our network. Whenever I try, the page times out. I have discovered that this link is a Adobe ColdFusion web page. Does ColdFusion use a TCP port other than port 80? I ...
0
votes
1answer
164 views

What does 192.168.1.1 /4 mean? [duplicate]

What does 192.168.1.1 /4 mean? Is there a calculator that translates this kind of notation to a list of IP addresses? For that matter any type of notation so that it would be easy and quick in the ...
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vote
0answers
164 views

Linux traffic shaping for multiple clients with tc [closed]

I need to divide bandwidth between several clients connected through IPSEC. I found this article: ...
0
votes
0answers
150 views

Vyatta or VyOS can support odd or even IP source routing or not

I tried to configure the even/odd policy for IP source routing in Vyattta/VyOS, but I get the below error message: Configuration error: "0.0.0.1/255.255.255.254" is not a valid IPv4 subnet ...
0
votes
1answer
62 views

IP forwarding server (or other solution)

We have physical server based in Hungary that are serving our Hungarian version of a site. For any other website we launch in different countries, We buy hosting in that country and launch another ...
0
votes
0answers
37 views

CentOS Server can't exit pfSense Network

Not sure if this is a routing issue or a firewall issue, or maybe a problem with the ifcfg-file of the CentOS machine. Here is the situation. I just got a 600Mb fiber connection from my ISP into the ...