theduke's questions

I have the following situation:

On my site, javascript sets a cookie that contains relevant information for generating the markup.

I therefore want Varnish to cache each page separately for each value of said cookie.

All the documentation I have found says that Varnish will not cache if any cookie is present, and explains how to remove cookies in Varnish preprocessing.

This is obviously not what I want, I want to cache, even if a certain cookie is present, but seperately for each value of the cookie.

Any way to achieve this?

Is it possible to configure IPTables in a way that all outgoing packets to a certain IP and Port are altered with a different port and do the same for incoming packets?

I have to work with a server routinely and the Hoster decided that SSH access will only be possible on port 222 instead of the default 22.

This always causes a headache when ssh, scp or rsyncing. You always have to remember to add the port parameter.

I would like to circumvent this with IPTables.

Any help greatly appreciated.

I have just set up a new DHCP server (dhcpd - package is dhcp3-server) on a Debian 6 box.
The new server is up and running, and I have successfully connected a client.

Formerly a router acted as the DHCP server.

My question: is there any way to send a broadcast to the network prompting all current lease holders - which still hold a lease from the router - to get a new lease from the new server?

Regards

I'm following a guide for setting up a trasparent TOR proxy on my server.

There are several iptables rules in the guide, two of which are:

iptables -t nat -A OUTPUT -p udp --dport 53 -j REDIRECT --to-ports 53

iptables -t nat -A OUTPUT -p tcp --syn -j REDIRECT --to-ports 9040

All the other rules appear just fine, but those two do not show up in iptables -L, even right after setting them.

Theres no error message or anything.

Can anyone tell me why?

I need to assemble a lot of images into one directory. Many of those images have the same file names.

Is there some safe version of mv that will automatically rename files if the target filename already exists so that pic1.jpeg becomes something like pic1_2.jpeg?

I could write my own python script but there has to be something like this out there so I can do:

find . -type f -name *.jpg -exec mvsafe '{}' /targetpath/ \;

I created a new Amazon Linux AMI instance and could connect just fine via ssh. Then I assigned an elastic IP to the instance and ssh suddenly stopped working.

Debug output:

debug1: Trying private key: theduke.pem
debug1: read PEM private key done: type RSA
debug3: sign_and_send_pubkey
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey
debug2: we did not send a packet, disable method
debug1: No more authentication methods to try.
Permission denied (publickey).