Questions tagged [address]
The address tag has no usage guidance.
66
questions
0
votes
1answer
70 views
pfsense OpenVPN client address issue
First VPN client works like a charm (tunnel is 192.168.104.0/24 -> 192.168.104.2 assigned).
But once another client logs on an identical IP is assigned.
It looks there is no address pool to be defined!...
0
votes
3answers
83 views
using 192.170.130/24 as a subnet on the LAN
We have a client who has a 192.170.130/24 subnet on their LAN, which is being NATed to the WAN IP address from their ISP. Is this a good idea or should they be using an RFC1918 addresses on their LAN?
...
0
votes
1answer
53 views
Where is email delivered if the domain on a shared IP has A record but does not have MX records?
Some say that an mail server can deliver email to the IP address where the domain is pointed to by A record even if the domain does not have corresponding MX records, though it is not recommended.
...
1
vote
3answers
139 views
In IPv4 Subnets - a /23 - How do we know which range to use? [duplicate]
Let's assume I don't know what my IP range is, or my default gateway, but I know my IP address is 192.168.5.38 and my CIDR Range is /23.
How do I know what my IP range is?
Is my range
192.168.4.0-...
0
votes
0answers
12 views
Not allowed to use one of my sender email addresses [duplicate]
I use mail-tester.com to test my email sending health. I can't solve the issue where [SPF] mydomain.com does not allow your server 104.254.129.4 to use info@mydomain.com
I have removed every single ...
-3
votes
1answer
13k views
Finding the first and the last address for a given IP address [duplicate]
It is small question, but I can't figure out these things.
Please help me in simply way how to do this.
Consider the given ip address is 198.51.100.39/28.
From this how can I found the first ,last ...
0
votes
2answers
355 views
carp single wan address
I try to put in place 2 freebsd routers with carp interfaces.
since I have only one wan address, lets say : 1.2.3.4
I'd like to use private range ips to do carp jobs :
10.0.0.1(router1) alias (1.2.3....
3
votes
1answer
208 views
Why do servers not accept email address comments?
According to Wikipedia Email addresses can contain comments in parentheses like john.smith(comment)@example.com.
I tried to send out some mails to valid Email addresses using such comments using ...
-1
votes
1answer
122 views
Finding out the physical port number of a Network device with java
I would like to find out the physical port number (the connector itself!) of a Router where a series of devices are connected to. Finding their IP and MAC is not issue at all. Let's say, finding out ...
0
votes
1answer
521 views
Allied telesis 950 series switch , how can i see connected devices' mac adress ? mac adress table
i have Allied telesis 950/48 series switch
how can i see connected devices' mac adress or mac adress table
0
votes
1answer
1k views
Map IP addresses to ports on switch? HP 2530-24G J9776A
We are trying to inventory incoming stock (used Mac computers) and are using Deploystudio and a special script.
One of the conditions of the script and the database system is that each incoming ...
2
votes
1answer
430 views
Change scale set virtual network default address 10.0.0.0/16
By default, when creating a scale set through the Azure Portal, that scale set has a a virtual Network with the default address 10.0.0.0/16, even if you are already using that Network for other ...
1
vote
1answer
410 views
Primary Smtp Address valid format for New-Mailbox cmdlet
I am writing simple application that utilizes the New-Mailbox cmdlet. One of parameters that is set is PrimarySmtpAddress. Provided Smtp address must be valid, otherwise the call will fail.
I was ...
1
vote
2answers
147 views
One IP address with multiple nat servers on one domain
Is it possible to use one domain to connect with servers in NAT?
Example
example.ltd - > 12.12.12.12
nat1.example.ltd - > 12.12.12.12 - > 192.168.1.100
nat2.example.ltd - > 12.12.12.12 - ...
1
vote
1answer
185 views
Dynamic IP address to Domain
A camera when connected to a DHCP Network receives an IP address. Using IP lookup I find the IP address of the camera. Then I type the camera IP address in a browser - it shows a website (index.html)
...
0
votes
1answer
107 views
How to find out from which switch is coming the exact MAC address
I am working on a big company with 2 Backbone routers (ARS9K) and 200+ switches (Cisco, D-link, Tp-Link and etc.).
Lets say that I know an exact MAC address of a device, but I do not know to which of ...
1
vote
1answer
22k views
POSTFIX: Sender address rejected: Domain not found (in reply to MAIL FROM command)
My mail server not recognize $mydestination, why?
sproxy:/var/spool/mail # tail -f /var/log/mail | grep vinicius.lehmann
Oct 6 11:13:21 sproxy amavis[31008]: (31008-17) Passed CLEAN {RelayedInternal}...
0
votes
1answer
2k 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 ...
4
votes
2answers
9k views
How to get public IPs on ESXi VMs?
We have a dedicated server with a hosting provider. We are running ESXi 6.0. The server has a single public IP which is currently being used for the management interface. The provider has also ...
1
vote
2answers
47k views
First and last IP address of the network 192.168.176.0/23 (subnet 23) [duplicate]
Let's have the following address of the network: 192.168.176.0/23. What are the first and last IP addresses of this network?
Following this answer https://serverfault.com/a/327782/288201 I assume ...
0
votes
1answer
875 views
Is There a Way to Change the From Address in Exchange 2010 WITHOUT Using an Edge Transport?
I'm setting up some general emails for my company (info@company.com and the like), so we can print flyers and such and not worry about turnover. [I'm actually using mail-enabled Public Folders, ...
3
votes
2answers
3k views
How to disable temporary IPv6 address in win7?
I found that the IPv6 link local address was generated randomly in Windows 7, not following the EUI-64 standard. Then I found this link and followed its guide:
netsh interface ipv6 set global ...
-6
votes
1answer
45 views
What if you set your static IP to that of Google? [closed]
What prevents someone from setting their static IP to that of another server such as Google's servers? How is that prevented?
0
votes
1answer
45 views
Why is linux not listing the IP I want?
I have a linux based cluster (using openMosix). The machine intended to be used as a server has 2 network cards. Cluster is working, and all machines ping to each other inside the cluster (internal ...
2
votes
1answer
515 views
Postfix replaces “from” when using simple filtering
I'm trying to configure Postfix (on a RHEL 6.5) to modify the content of incoming messages and forward the emails to a remote server.
I used a Perl script piped to Postfix to modify the content, and ...
1
vote
2answers
5k views
Why my website is not accessible with the www prefix
I know this is an old, and "amateur" question but I see myself in the need of making this question since I truly don't know whats going on.
My website is not accessible with the www prefix... ...
1
vote
0answers
659 views
How to change SAS address on Expander
I have the following setup - two supermicro backplane attached to one controller LSI SAS 9207-4i4e and unfortunately cannot access the disks, during boot there are disks only in one backplane, the ...
-3
votes
2answers
2k views
Linux Find Mac of IP address that connects to server [closed]
On Linux , How Can Find Mac of IP addreass of any user / computer that connected to server ?
we use Centos + Iptables .
2
votes
2answers
27k views
What are the IPv6 Public and Private and Reserved ranges [duplicate]
I just want to know what are all the public IPv6 ranges which ISPs or other users can use?
Also need a list of addresses which can be used in private networks and also the list of addresses which ...
0
votes
2answers
50 views
Session automatically resolving to secondary IP
I am using Debian 6 - 64-bit and this is what my /etc/network/interfaces file looks like
auto eth0
iface eth0 inet static
address PrimaryIP
gateway X.X.X.X
netmask 255.255.255.0
auto eth0:...
0
votes
5answers
381 views
Moved IP addresses to other server, no network internally anymore
I have had this server set-up:
serverA
ip 200.200.200.100
ip 200.200.200.101
ip 200.200.200.102
ip 200.200.200.103
Due to circumstances, I had to move away ip 200.200.200.102 and 200.200.200.103 ...
1
vote
1answer
393 views
How to block outgoing traffic of the mac address of one of the server's own NIC with ip tables?
i have a server with 5 nics connected to a switch, and running GNS3 (cisco router emulator).
I need to block, in the server, the packets originated by the nics at layer 2 level (the nics are not ...
2
votes
1answer
96 views
How can I deny a bind lookup on a single IP address?
I am running a BIND installation as a simple RBL server. The problem I am running in to is that if I have listed a block of IP addresses like:
*.0.0.10.rbl.mydomain.net. IN A 127.0....
0
votes
2answers
158 views
Assigning a static IP address to DHCP network
I would like to add a static IP address to computer on a DHCP network. If I reserve an IP address for this computer does this result in a static IP address?
1
vote
1answer
264 views
Add IP addresses on CentOS 6
I have a 12 IPv4 addresses that I need to add to a CentOS 6.3 machine however those 12 IPs are spread out among 3 different subnets. I know how to add additional IPs when they are on the same subnet, ...
-1
votes
3answers
1k views
MAC Address Changed?
I was wondering if the following MAC address is a valid one?
00:13:74:00:00:00
We have an automated network registration on the system whereby users can plug in their computers and register on the ...
-3
votes
2answers
143 views
Changing the IP address with a name [closed]
I have a web server (xampp) in a particular PC running on my LAN, and I added the following line in the 'hosts' file : 127.0.0.1 mysite.
Then, in another PC connected to the LAN, I'm trying to ...
1
vote
1answer
1k views
Rebooting a guest causes IP address conflict
We've been having issues while setting up a vSphere cluster, using 7 ESXi hosts, and running about 74 guests that are amongst the mess.
Our issue is that when we reboot a guest, Windows or Linux, ...
-1
votes
1answer
2k views
Multiple IP addresses in wireshark show the same mac address. What's going on?
I'm seeing an issue with a computer (running an embedded OS) transmitting over a network to an XP embedded machine.
The computer has 10 physical ethernet ports, 9 of which are on this network. I ...
0
votes
2answers
805 views
Local Network Windows Port Address Translation
We have many legacy applications that can only send reports via printing. We have an application called RPM that can receive these print jobs and convert them to a more useful medium (e.g. PDF ...
-4
votes
2answers
1k views
Getting IP addresses through sniffing [closed]
Is it possible to know the gateway address of a wireless AP that I'm not connected to through sniffing? Airodump-ng can show MAC addresses of the AP and the clients associated but doesn't show IP ...
0
votes
2answers
56 views
Setting http://domain and http://ip to show different directories
Can someone tell me what httpd.conf settings I need to acomplish this?
When in browser I access http://IP I want to show: /var/www/html/
And when I access http://domain I want to show /var/www/html/...
0
votes
1answer
578 views
How to enable DHCP address release with dhclient
We have a subnet with a couple of hundred virtual machines that:
boot up
do some short heavy computational task and shut down.
The average life of a vm here is about 20 minutes.
It's critical that ...
0
votes
1answer
775 views
Postfix connection cache / address verification probes
Is Postfix connection cache also applicable for address verification probes?
My setup of 2 frontends with 1 backend sometimes runs into trouble under high load. Frontends verify recipients on the ...
2
votes
3answers
20k views
IP address of virtual server?
I have a virtual server (shared hosting), with a domain name (and several sub-accounts, each one a separate site also with its own domain name)
I was wondering if there was a way to find out the IP ...
3
votes
3answers
4k views
CentOS Wrong Outgoing IP Address
I have a Centos 5 box with a sub interface:
ifconfig eth0 10.1.1.1 255.255.255.255
ifconfig eth0:1 10.1.1.2 255.255.255.255
The netmasks need to be 32bit in the environment this server is in. So in ...
3
votes
2answers
2k views
Outbound IPv6 Trafic Fails
My hosting provider has supplied me with global static IPv6 for my machine. It appears that auto configuration has been successful and I can successfully ping my machine and tracepath6 appears to ...
3
votes
2answers
6k views
Allowing traffic only from a specified IP addresses using iptables
I have a dedicated server (which I only use a lab/testing environment). On the server CentOS 5.6 is running and it is functioning as a KVM host.
To secure things a little I want to do the following ...
4
votes
5answers
4k views
Why is this China IP hitting my web site?
I have a web site that uses a couple hundred domain aliases, including franchise-dallas.info, franchise-delaware.info, and detroitfranchise.info (see more below).
I have been getting ten to twenty ...
1
vote
1answer
769 views
configuring external block of IP addresses
I have a business DSL through FairPoint. With it, I have a block of 5 IP addresses. I've done some googling and spoken with FP tech support. Perhaps someone that's more knowledgeable than I can ...
