1
vote
2answers
43 views

Local DNS fails when another interface is connected

I have a LAN with a Linux server running BIND for addressing of local computers. When a workstation is connected to the local network (where there is no Internet access), I can successfully address ...
1
vote
1answer
136 views

OSX Mavericks and Windows 7 missing files [closed]

I have in a local Mac mini server running Mavericks which is acting as a file server for two windows 7 clients The files on the server are mainly images and are shared via SMB. Whenever I try to view ...
1
vote
1answer
587 views

How do I add a broadcast IP to the loopback interface under os/x using ifconfig when my machine has no network? [duplicate]

I'm new to advanced network administration and I would like to do some testing with UDP broadcasting, so I need a broadcast address on my loopback interface. The machine is offline, in other words, ...
-1
votes
2answers
105 views

What is the equivalent of 127.255.255.255 for OS/X machines so I can test broadcast udp packets without a network? [duplicate]

I am trying to test my program that makes use of broadcast UDP (not multicast!). In Linux, I can use the 127.255.255.255:64651 address and everything works beautifully, in other words, I send a packet ...
0
votes
0answers
64 views

Bridged network on OS X only gets UDP broadcast traffic

I've created a bridged network Mac OS X 10.8.5 using ifconfig and TUNTAP for OS X to bridge my wireless connection, en0, with a virtual interface, tap0, which I can use for guest VMs: $ sudo ...
1
vote
1answer
59 views

How could two processes bind onto the same port?

I just ran into an issue where a request made to localhost:8080 from curl was hitting a different server than the same request made from inside Node. lsof -i :8080 revealed that two processes were ...
-1
votes
2answers
206 views

ARP Command doesn't display all devices

I have a machine on my network that needs to create a list of all mac addresses connected to the network. This is running OSX when I run the arp command it doesn't always display everything connected ...
1
vote
1answer
155 views

Multiple macbooks can't connect to company web server

We're having a very strange problem where 2 macbooks running osx 10.8.2 can't connect to our public facing server on any port. Attempting to ssh or navigate to the web server fails, but every other ...
0
votes
2answers
175 views

Outgoing SSH timing out from Ubuntu

I'm trying to diagnose why an SSH connection is timing out. I have two OSX boxes which can SSH to the remote server fine. I have a two ubuntu boxes, on the same network and subnet which just ...
0
votes
2answers
73 views

Require VPN for Network Connectivity on Mac OSX?

At the moment, all company resources are "protected" behind a Cisco VPN, and our OSX clients are configured to (on-demand) connect to the VPN. As the VPN sets the default route for the OSX client to ...
2
votes
2answers
1k views

Cannot ping over LAN until a ping is received

I have two OSX machines on a local subnet. Pings from Machine A to Machine B consistently timeout until Machine B pings Machine A. After B pings A, A can successfully ping B, but this success is ...
0
votes
1answer
194 views

Mac Mini stops accepting ssh connections from different network [closed]

I have a strange problem, and I am not very familiar with Mac OSX so I am coming here for help. I have two Mac Minis on a network 192.168.1.* Mac Mini 1 = 192.168.1.10 Mac Mini 2 = 192.168.1.11 My ...
1
vote
2answers
1k views

Ubuntu 12.04 Server - eth0 1Gbps NIC eth1 10Gbps NIC - all traffic using eth0?

UPDATE: (per request below) serveradmin@FILESERVER:~$ cat /etc/hosts 127.0.0.1 localhost 127.0.1.1 FILESERVER # The following lines are desirable for IPv6 capable hosts ::1 ip6-localhost ...
2
votes
1answer
1k views

Mac OSX server command equivalent for dhclient?

Is there an MacOS command that makes a dhcp request, and renews the old lease, drops it for a new one, or usefully reports errors or lack of response from a dhcp server? This would both help fix ...
-1
votes
2answers
179 views

Cisco Switch: Trying to dump mac address info from switch to server

The command: show mac address-table gives me me mac address info i like. I'm trying to figure out to get this to dump to a server once a month as a text file. Each time it would dump, the previous ...
3
votes
1answer
91 views

Corporate Windows Network Performance

We operate a Windows 2003 Active Directory network. As the new IT manager I've inherited this infrastructure from previous outside contractors that have come in to help maintain our company network. ...
3
votes
1answer
762 views

How to add a broadcast address to loopback with ifconfig on a OS/X?

I am trying to use ifconfig to turn on broadcast on my loopback interface. It currently reads: lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384 As you can see, no broadcast address! ...
4
votes
1answer
1k views

Add static route through DHCP

I'm trying to get an OSX Lion Server to provide a static route to its clients (all OSX Lion) over DHCP. I can't get the client to actually apply the static route. So far, I've managed to get the ...
2
votes
3answers
4k views

Routing WIFI and LAN for specific traffic

I have two network devices aboard my macbook pro: WIFI (en1): Used for general traffic. Connects to an ip of 192.168.19.* via DHCP LAN (en0): Used for specific traffic. Connects to an ip of ...
1
vote
0answers
119 views

node.js server not running

I am trying to learn node.js, but I'm having trouble getting the simple server to run on localhost:8888. Here is the code for server.js: var http = require("http"); ...
0
votes
1answer
54 views

How to troubleshoot banned connections on OS X / Ubuntu

I have an ubuntu 11.10 VM running on an OSX machine. Every once in a while some services become inaccessible from specific IPs (e.g. sometimes just ssh is blocked, and sometimes both ssh and https.) ...
1
vote
2answers
565 views

ssh suddenly stopped working on Mac

Everyday I wake up and check the my servers are running smooth, I use my mac to connect to some ubuntu and some freebsd machines. But today when I tried something strange happened: $ ssh -v -p ...
0
votes
1answer
97 views

OS X tools for testing & visualizing network performance between two points

A client of mine has had intermittent network issues between their office and their server hosted on AWS. A speedtest (at speedtest.net) shows their bandwidth is fine. When I test their server, from ...
12
votes
1answer
5k views

Why is Mac OSX Lion losing login/network credentials?

Symptoms At work we have OSX 10.7.3 installed and every once in a while I will see the following behaviors: If the the screen is locked, then multiple tries of the same user/pass are not accepted. ...
0
votes
0answers
200 views

How do I set the default gateway of virtual adapter on a Mac

I am trying to make a Parallels virtual adapter that forwards all traffic to a VPN I have connected on the host. I was thinking the best way to do this is with a route on the host's side. How do I ...
6
votes
3answers
460 views

Can we bond (with Manage Virtual Interfaces, or similar) across an USB Ethernet dongle and the Airport Wifi

We've got a Macbook Air (Actually, we've got some Airs, Some Pros and some iMacs). We've got a consistently annoying problem, which is that when they connect to our DHCP server, they've actually got ...
5
votes
2answers
130 views

Is it possible to run pre-Lion OS X in an IPv6-only environment without static configuration?

Is it possible to run pre-Lion OS X in an IPv6-only environment without static configuration? From what I've been able to figure out, OS X 10.6.x will acquire an address via SLAAC, but it doesn't ...
1
vote
1answer
829 views

Getting Macs to authenticate to AD and map home directory

I have a multi-platform environment with Macs and Windows. I have it now setup where users can log into their Macs authenticating with their user accounts in Active Directory. I used to have their ...
0
votes
1answer
556 views

Running nmap over vpn on Mac OS X 10.7 Lion fails

When connected to VPN (I have used OpenVPN and TunnelBear VPN service) nmap stops working. Ping, nc and other network tools work however nmap doesnt. When not running vpn, I get: $ sudo nmap ...
2
votes
1answer
729 views

Converting iptables command to ipfw

I am trying to convert code I made on ubuntu work with osx. I do not know how to convert the iptables commands to ipfw commands. Any help would be appreciated. Ubuntu Code: echo 1 > ...
1
vote
2answers
659 views

exclude ip from vpn

I have a mac running a parallels virtual machine with ubunutu server and a webserver installed. I can ssh to it and navigate to the web server in the virtual machine from the mac. Once I connect to my ...
2
votes
3answers
67 views

Networking OSX BSD Book Commands [closed]

I am looking for a good source (book, online) of networking on mac osx or linux. What commands, how to connect, send data, security (checking for intruders) etc.. Setup server. Thanks for the time.. ...
1
vote
1answer
749 views

Netatalk and Snow Leopard Slow transfer speed

I have a simple setup of netatalk afp server on my OpenSolaris box. And I also have samba on that box. transfers from netatalk to my mac mini with Snow Leopard 10.6.8 go at speed 2-3 Mbytes/sec but ...
0
votes
0answers
219 views

[Strange]Mac OS X unable to use Proxy and Custom DNS setting

I run a proxy DNS & proxy service but today I encountered a very strange problem which I couldn't solve. One of my clients recently moved to a new location which has a different router setting. ...
1
vote
1answer
298 views

Can I assign a different DNS for 192.168.*.*?

I'm trying to connect to my company's network via PPTP VPN from Mac OS X. I had a problem which turned out to be wrong netmask configuration which prevented 192.168.10.16 and 17 DNS servers from ...
5
votes
3answers
9k views

Can't resolve host through VPN connection from Mac OS X

The Preamble I set up a VPN connection from my Macbook, and it seems to connect successfully. However, I can't access my work computer because hostname doesn't get resolved: $ ping myusername ...
1
vote
1answer
235 views

mac OS X version 10.6.5 network connection troubleshooting/solution?

Im connected to a small office network where where everything works fine. however once in a while or on a random occasion usually after the computer has been left on or on sleep all night there are ...
1
vote
1answer
224 views

New Unibody MacMini Network issue

So I have a brand new MacMini straight from apple preinstalled with 10.6.4. Summary of the problem is when downloading a file larger than 1meg after 800k or so the download slows tremendously to 1 or ...
0
votes
1answer
365 views

Windows 7 PPTP VPN problem

I'm currently using an win 7 as an network server at my home. I've created some shared folders wich can be accessed easily from any pc on my network (win and mac computers) recently I decided to ...
0
votes
3answers
232 views

How to prevent Ubuntu from combining networks on 2 NIC server?

I've got a Ubuntu Server 10.10 with 2 network interfaces with a cable plugged into both going to switches on completely different networks with different routers. One network is the 10.1.10.X network ...
1
vote
1answer
178 views

ngrep Headers/Frames

Using the -x flag with ngrep causes the data portion of packets to be displayed in hex. Is there a way to also display the frames/headers as well?
3
votes
3answers
2k views

How can I telnet to an IPv6 host using Mac OS X?

Iā€™m testing IPv6 on a corporate network and having problems with OS X. With most IPv6 commands, such as telnet -6 or traceroute6, I get the error: connect: No route to host For example, I have a ...
1
vote
1answer
500 views

SSH mysteriously stopped working on OS X

I've been using the standard terminal-based ssh client that ships with OS X (10.5.8) without any problems for years now, and suddenly it has stopped working and I can't figure out why. I try to login ...
1
vote
1answer
250 views

Adding more than one “.local” address using OSX Bonjour,

Is it possible to have more than one ".local" address per machine using Bonjour on OSX? I would like to add x.local and archive.x.local so that I can run multiple apache vhosts. System Preferences > ...
1
vote
1answer
1k views

How to set Mac server to use different Gateway for internet bound traffic

Here is a network diagram of what we have so far: We have recently added a second internet connection that gives better outbound speed for use of offsite backup for our fileserver (Mac Server). I ...
0
votes
2answers
851 views

OSX: See bonjour computers through VPN?

I use VPN to connect to my works network. Is there a way to see those computers through bonjour once I connect? Currently I need their IP to connect since I can't see them. Ideas?
2
votes
2answers
281 views

Network monitor applications mac os x

I'm trying to pin point what applications are using up my network connection. Is there an app/widget out there that can show me this? I'm aware of net monitor but that doesn't seem to tell me what ...
2
votes
2answers
143 views

ssh hangs when connecting to IP address, OK when using hostname

Using Mac OSX 10.6.4. I'm trying to ssh into the same computer I'm using. My computer's name is simply MacBookPro. The short version is that when I ssh to my machine using its IP address , it ...
1
vote
1answer
387 views

Inbound connections using Internet Connection Sharing in Apple/Mac/Leopard

I have a Mac mini which I'm using to give some other devices wireless access, by sharing it's Airport connection with the local ethernet, and that is plugged into a switch. All devices can get online ...
5
votes
2answers
2k views

Does Mac OS X throttle the RATE of socket creation?

This may seem programming related, but this is an OS question. I'm writing a small high performance daemon that takes thousands of connections per second. It's working fine on Linux (specifically ...