1. UNIX for Advanced & Expert Users

Hi guys, Just needed to know if all the ports above 1024 are closed by default. I know that below 1024 the ports are reserved for the kernel and ports above 1024 are reserved for user applications. But by default, if I do not have a rule in my firewall to block ports above 1024, Will my... (4 Replies)

2. UNIX for Dummies Questions & Answers

Hi Everyone, Good day. Scenario: 2 unix servers -- A (SunOS) and B (AIX) I have an ftp script to sftp 30 files from A to B which happen almost instantaneously i.e 30 sftp's happen at the same time. Some of these sftp's fail with the following error: ssh_exchange_identification: Connection... (1 Reply)

3. Post Here to Contact Site Administrators and Moderators

I had a thread open and now it says it's closed. I had a question still on the forum and about 15mins after I posted my most recent question on it the thread said "closed". Why did this happen? I didn't violate any forum rules. Is there a limit on how many postings you can have in a single thread?... (1 Reply)

4. Solaris

Dear all, I have a Solaris 10 system with a bunch of zones on it. My issue is the following: - I have application A and B running in the same zone: i.e. they communicate via loopback interface. Application A tries to connect to application B, usually listening on port X. If application B... (6 Replies)

5. IP Networking

Hey guys, I'm having trouble with checking what ports are open on my Debian distro, which is reporting all ports closed, though they are clearly open I am checking to see if ports are open with netcat: nc 127.0.0.1 80 localhost 80 (http) : Connection refusedAs an example but on all ports... (0 Replies)