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Questions tagged [multi-homed]

62 questions
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1 answer

Postfix: "hostname x does not resolve to address y" warning even though it does

Postfix log shows lots of these: warning: hostname client.lab.lan does not resolve to address 192.168.1.153 Yet a DNS lookup from the server shows that it does resolve: # nslookup client.lab.lan Server: 192.168.10.242 Address: …
Jochen
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2 answers

Desktop has two IP addresses, server has decided to refer to it using the wrong one. How do I fix this?

I have a Windows 7 desktop machine, having a static 192.168.*.* IP address on a network full of things with such addresses. I recently received a piece of hardware that I need that machine to talk to over UDP, and that piece of hardware has a…
Grogg
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1 answer

How to configure Windows Firewall to protect the external interface but not the internal one?

Windows Server 2008 R2 SP1, running the Edge role of Lync Server 2010. One internal network interface connected to the company LAN, configured with a private IP address, subnet mask, internal DNS servers and no default gateway. One external…
Massimo
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Windows 10 uses wrong NIC to reach certain IP addresses

I have two servers running Windows 10 Enterprise 2016 LTSB that seem to be using the wrong NICs. The network consists of 2 subnets. So each server has one NIC on the "main" network with Internet access, 10.1.10.0/24. Then each server has another NIC…
Andrew Myers
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Secondary IP dropping traffic

I'm running Ubuntu 18.04 with two interfaces on separate vlans. I'm running a web server which is listening on both interfaces. From each of the lans I can connect to the web server. One of the interfaces has internet traffic being forwarded to it…
simon_dmorias
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2 answers

How do I specify a preferred source address for IPv6 multihome clients?

My ISP provides an IPv6 prefix delegation but with a dynamic prefix. I want a publicly routed static prefix for some local services, so I also have a Hurricane Electric tunnel set up, which means clients must operate in a multi-address multihoming…
cqcallaw
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1 answer

DNS Resolution fails on multihomed server

I have an odd issue with a freshly installed Win2012R2 server (Actually a VM running on VMWare). The server has 2 nics (Both enabled), one on VLAN101 the other on vlan102. The configuration: Nic0 IP 10.1.101.123 Mask 255.255.255.0 Gateway…
Fredster
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1 answer

troubleshooting default route on multihomed device

I'm trying to setup a multi-homed Debian system so that there is a default route per interface, not just a default route for the system. Its a well known setup, but I can't seem to get it to work and I'm not sure how best to troubleshoot with my…
300baud
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2 answers

Multi-Homed AD servers. 1 for production, and 1 for management

In a multi-tenant environment, we have a client that is running a couple of active directory servers on servers that we manage for them. The servers are multi-homed for a primary network which is connected to the client's VLAN and a management…
Deprived.Writer
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3 answers

Windows 7 sending all packets to one nic

I have windows 7 with two nics, one default gateway set on nic1, and no default gateway on nic2. Nics are on different subnets. Nic1 is on 192.168.1.0/24 subnet, and nic2 is on 10.60.194.0/28 network. When I ping 10.60.194.1 router, packets are sent…
zdravke
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1 answer

Multihomed VM workgroup attached to domain clients, resolution issues

hopefully someone here can help me out with this nightmare: I have a corporate network with ADDS, let's make believe this is a 192.168.10.x network. I have a server that runs 3 VMs (one APP server, one SQL server and one web server) that are not…
ToddBlan
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1 answer

AS number with two isolated networks

The company I work for have branches all over Europe and data centers in Sweden and Germany. In Sweden all sites are connected to each other via point-to-point links as well as each connected to Internet. Outside Sweden the sites are only connected…
Par S
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Citrix Receiver hangs at "Please wait for the Local Session Manager" and published application fails to launch

When a user tries to connect to a Citrix XenApp 6.0 published application on a Windows 2008 R2 server, Citrix Receiver hangs at "Please wait for the Local Session Manager..." Eventually it times out and the application fails to load. When the user…
user65237
1
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2 answers

DHCP clients: Where is the hostname going to come from

We are building a private cloud here, VMs have at least 2 NICs, sometimes 3 or 4, each may be statically configured for IPv4 and/or IPv6 or be configured by DHCP or a combo of the two. Yes it's a mess, but this is the design I have to work…
Ira
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2 answers

Exchange and routing of messages

I have Exchange 2007 installed on a W2k8 box with two NICs. How can I tell Exchange to route all outgoing SMTP traffic out via a specific NIC? Edit: Can I do it via the W2k8 firewall/routing?
Marius
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