Some time ago a client of mine was running squid on a system with multiple interfaces and ips. He wanted a setup where squid would use the same ip on which it received the connection to create the connection to the destination server for fetching the content.
Let's say we have 3 ips 18.104.22.168, 22.214.171.124 and squid listens on both interfaces. Now if a client would connect to the proxy server on ip 126.96.36.199 and request google.com, squid will use 188.8.131.52 to make the connection to google. If the client will connect to 184.108.40.206 squid will use 220.127.116.11 to connect to the destination server.
If you want to compare two strings in shell you can use something like
test "$str1" = "$str2" but that will only tell you if the strings are equal. The strcmp(3) C function also tells you if the first string is less or greater then the second ( alphabetically) . I created a similar function in shell.
When programming/scripting in shell, like in most of the other programing languages you can organize your code in functions that can be called from anywhere in your code, you can pass parameters to them and they can return a value or output something.
A bug exists in the pecl cli script on freebsd that will not permit you to install any pecl package.
The problem is that the pecl script needs pcre.so but the script calls php with -n ( don't use php.ini ) so the pcre.so extension is not loaded.
A quick fix is to edit /usr/local/bin/pecl and remove "-n" from the last line so it will look like
exec $PHP -C -q $INCARG -d output_buffering=1 -d safe_mode=0 -d register_argc_argv="On" $INCDIR/peclcmd.php "$@"
I tried to set up qmail with tls and smtp auth on freebsd. I have configured my server with SMTP-AUTH so that I can use it to relay messages for me and other authenticated users. I would like qmail to sign the messages that the authenticated users send through my server.
I compiled qmail-tls from ports, checked the smtp-auth and qmailqueue options, then I compiled qmail-dk and selected the SMTP-AUTH patch. I set up my private and public keys, I set up bin/qmail-dk for qmailqueue as described on this page : http://jeremy.kister.net/howto/dk.htm but still not results. It just does not want to add the DomainKeys signature but instead it tries to verify the messages. Read more