few misc. network/server problems

nomb · 04-03-2007, 09:16 AM

Hey guys,
I have a few questions I'm hoping you'll be able to help me with.

First off, I'm running a web/ftp server atm from home.
http://www.nombyte.com I have something like 4mb download and 365k upload. I am however have a few problems.

Lets start with the webserver. I leave my webserver on all the time. At some point every two or three days if you use any browser and try to go to my domain it will say www.nombyte.com cannot be found. Same thing if you use the ip address. At first I thought it was a problem with fxdomains.com.

(which in my opinion is horrible, if anyone knows a good domain host let me know please because I have another problem with them you'll get to in a moment)

However this was not the case because if I just did
# service httpd restart
and tried to refresh the page, it loads without any problems. I really don't know why this is happening.

Ok Second, I use ssh all the time. (well I did) However, even on the internal network it is very, very slow and laggy. I've enabled compression and everything and I can't figure out why it is like this. I did a search for optimizing ssh on linux and didn't get anything really relevant. I also couldn't ssh from an outside source into the server. So I tried my ip address which worked when it wanted to. So I went and looked at my domain settings and found something called (either cnames or anames, i can't remember) so I added ssh and told it to go to my ipaddress. (i didn't know if that was right but thats what it had for http so I tried it). After that it works like with an ip address. When it wants too. Now, it doesn't work at all. For feedback purposes feel free to see if ssh will connect for you. (I'm gonna hate my log files I bet

) I use port 8080 for ssh (I wanted to be able to ssh throught the public hotspots but that isn't working either)

Router/Firewall

My firewall is setup pretty good. I wish I new iptables better but everything works (not well but works) from the inside so there is no reason it shouldn't work from the outside.

The router is setup with the virtual ports 21/80/and 8080 pointing to the internal ip address. I know these work because everything as worked atleast once. I didn't know if i should put the server in the dmz zone or just use the virtual ports.

I know this is a lot but thanks to everyone who helps out.

nomb

bsdunix · 04-04-2007, 07:37 PM

Just a quick check of your domain:

Code:

$ dig www.nombyte.com
;; ANSWER SECTION:
www.nombyte.com.        3600    IN      CNAME   nombyte.com.
nombyte.com.            3600    IN      A       71.62.232.167

$ nslookup 71.62.232.167
Non-authoritative answer:
167.232.62.71.in-addr.arpa      name = c-71-62-232-167.hsd1.va.comcast.net.

Maybe Comcast is causing you problems? Have you checked your system logs for any problem entries relating to the http and ssh services? I successfully connected to your web page on port 80 and saw ssh running on port 8080.

nomb · 04-04-2007, 10:02 PM

dig is cool. where does it show u ssh is running?

thanks nomb

bsdunix · 04-05-2007, 06:13 AM

Quote:

where does it show u ssh is running?

I simply attempted a ssh session. Your systems's key fingerprint was not recognized on my system so I was prompted to accept/deny your server's key. If I had accepted the key, I would of seen a login prompt. But, I didn't accept the key and simply disconnected. I probably could of run a nmap scan to see what ports your system had open, but that would not of been polite without asking you first.