Joe-Ma Help with Unix, Apple, Web, Mikrotik and Cisco

Configuring Mailscanner Mailwatch and Postfix for FreeBSD The Install guide is here I have split the install guide and the configuration guide as they are pretty involved and might cause confusion if they where put together. I will start off with the easier stuff like clamav and then move on to spamassassin and postfix and then finally to mailscanner and mailwatch. if you have not already read the Install Guide Which might be helpful to newcomers here is a summery of what has been installed. Apache and php - this is for the Mailwatch web frontend. Mysql - This is where mailscanner will log info and where your black and white lists will live. Mailwatch - Mailwatch is the web front end to help monitor and manage Mailscanner. Spamassassin - This is the system that checks the mail content looking for spam. Clamav - the Antivirus scanner that Mailscaner will use Mailscanner - The server that uses all of the above to keep your mail clean and spam free. Ok now that that is over: Confi...

Installing postfix, mailscanner and mailwatch on FreeBSD I have setup a number of servers using mailscanner and postfix to do antispam and antivirus checking. This particular example will show you how to set the server up as a mail gateway. i.e. all inbound and outbound mail will go via this server. You can also use the server as a pop3/imap4 server and doing so, does make life a little easier as you don't have to worry about the transport and relay_hosts files. At a later stage I will show that info too..... when I get a chance. This my seem strange but as there is quite a bit involved in installing and configuring I am splitting this into two How-To's this one, The install How-To and the configuration How-To First off its probably best to start on a new install of FreeBSD. Once you have done the initial portsnap fetch and portsnap extract Right here we go. Two things you might want to do is force your NIC to 100MB full duplex and install lsof Type in ifconfig and check if the...

Logging Cisco devises to syslog on FreeBSD Overview What we are going to do here is get a FreeBSD server up and running with syslog-ng, so that we can log information from our Cisco devises to it. This How-To will be pretty detailed and we will be logging data from Cisco Routers Switches and Cisco PIX Firewalls. We are going to get the syslog-ng daemon to create the log files automatically and to log to a new file each day, with a date stamp in the file name. Installation This is probable the easiest part All you have to do is “cd /usr/ports/sysutils/syslog-ng” and run “make install clean” Now that the port is installed you can edit the syslog-ng startup script to change the following line from NO to YES : ${syslog_ng_enable:="NO"} : ${syslog_ng_enable:="YES"} also add syslog_ng_enable="YES" to your /etc/rc.conf file Save the file, then edit your /etc/rc.conf file and add syslog_ng_enable="YES" and also add syslogd_enable="NO" this wil...

Sometimes you need more than one address aliased to a network interface on a server. for instance if you want to use ssl pages in apache each ssl certificate should have its own IP address and each VirtualHost that runs on port 443 should have a unique IP address. You can get around thins by changing the port from 443 to something like VirtualHost:4430 vhost info VirtualHost:4431 vhost info VirtualHost:4432 But you are not using default ports and it might be a problem out in the real world sure you could do the above in side your own network Anyway thats not what this is about this is to Alias other IP's to your NIC on your FreeBSD server all you have to do is edit the /etc/rc.conf file defaultrouter="10.10.10.1" hostname="mysrv.mydom.com" ifconfig_em0="inet 10.10.10.4 media 100baseTX mediaopt full-duplex netmask 255.255.255.0" ifconfig_em0_alias0="10.10.10.7 netmask 0xffffffff" ifconfig_em0_alias1="10.10.10.8 netmask 0xffffffff" if...

Static NAT and PAT (port forwarding) NOTE: This particular config was done on a Cisco 877 ADSL / DSL router however its known to work on the Cisco 800 series routers in general including the Cisco 827 Cisco 837 Cisco 877W the Cisco 1720 Cisco 1721 Cisco 1750 series and the CIsco 1600 series Right so you have setup your Cisco DSL (or you only have one IP address from your ISP) and you have setup your DynDNS so that you can connect to the router. But now you what’s next? Well the usual next step, and probably the whole reason you did this in the first place is so that you can connect to the server from the outside world for a web server or a mail server. or some thing similar. The basic principal is that the connection is made in from the dialer interface (the external address) and passed to the internal address on a matching port. There is a limitation to this though, if you have two web servers both listing for traffic on port 80 but only one external address you are going to run into ...

Any new Cisco ADSL router in the 800 series should support dynamic DNS updates to a DDNS provider like DynDNS.com This particular example is for a Cisco 877 ADSL router. NOTE: This particular config was done on a Cisco 877 ADSL / DSL router however its known to work on the Cisco 800 series DSL routers in general including the Cisco 827 Cisco 837 Cisco 877W as long as your Cisco IOS on the router supports the DDNS config You might want to check the Cisco ADSL config guide too . First off you are going to want to create an account with a DDNS Provider, this particular example uses DynDNS.org but others should work in the same way or at least in a similar way. In this example the dns name we want is mycisco.dyndns.org OK lets go Login to you router via console or telnet Go into Enable mode Then configure terminal (conf t) ip domain name dyndns.org ip name-server ip.ip.ip.ip ip name-server ip.ip.ip.ip ip ddns update method DynDNS HTTP add http://uname:passwd@members.dyndns.org/nic/u...

Assigning STATIC IP addresses on a Cisco Router via DHCP Although it’s not something that is probably all that common, and it’s actually the first time I have had a need to use this on a router, I thought I would share this information with you anyway NOTE: This particular config was done on a Cisco 877 ADSL / DSL router however its known to work on the Cisco 800 series routers in general including the Cisco 827 Cisco 837 Cisco 877W the Cisco 1720 Cisco 1721 Cisco 1750 series and the CIsco 1600 series Normal DHCP config for a Cisco Router ip dhcp excluded-address 192.168.1.1 192.168.1.10 We are excluding anything in the range between 192.168.1.1 to 1.10 In this example our servers are in this range and we don’t want any conflicts, also the router is .1 ip dhcp pool POOL-NAME network 192.168.1.0 255.255.255.0 dns-server 192.168.1.7 192.168.1.8 default-router 192.168.1.1 lease 0 8 The pool name is exactly that a name it will mean more to you than to the router so make it something yo...

Setting up and Installing Rancid on FreeBSD for Cisco Products What is Rancid? Rancid is an application that monitors a devices configuration including software and hardware. The configuration is then stored in a Concurrent Version System or CVS. Most of the time it is used to back up router, switch and firewall configurations, as well as notify you when a configuration has changed, i.e a firewall rule or a routers IP address or access list change. here is an example of the output =================================================================== retrieving revision 1.29 diff -u -4 -r1.29 mpls-jhb-pe1 @@ -288,9 +288,9 @@ ! interface Serial0/0 description Link to Client X bandwidth 2048 - ip address 192.168.1.244 255.255.255.254 + ip address 192.168.1.234 255.255.255.254 ip route-cache flow ip tcp header-compression iphc-format ip tcp compression-connections 256 ! ip ospf message-digest-key 1 md5 the - symbol represents what was removed the + symbol represents what was added The abo...

Setting up a Cisco 800 series Router for ADSL Not that the Average user would use a Cisco ADSL router, or if they do use a Cisco product it would probably be a Linksys router. Anyway here is the config with comments in between. all comments are in italics You might want to check out the Cisco DYNDNS configuration guide too NOTE: This particular config was done on a Cisco 877 ADSL / DSL router however its known to work on the Cisco 800 series DSL routers in general including the Cisco 827 Cisco 837 Cisco 877W This example is a basic setup for just access to the web you can enable PAT or Port Address Translation on the router to allow access from the outside to a server or something like that. Also this setup is for a Dynamic IP from the ISP you might also want to checko out the how to on setting up SSH login on the router no service pad service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname # your router name i.e. Bobs Router ! boot-st...

Installing and configuring ProFTPD Installing and configuring ProFTPD so that a web user can login and be jailed to their home directory is very simple Firstly install proftpd via your FreeBSD Ports Directory Once installed copy the proftpd.conf sample file to proftpd.conf Edit the file and uncomment #DefaultRoot ~ as per below # To cause every FTP user to be "jailed" (chrooted) into their home # directory, uncomment this line. DefaultRoot ~ Then edit the proftpd startup script in /usr/local/etc/rc.d/ And change proftpd_enable=$ to proftpd_enable=$ edit your /etc/rc.conf file and add proftpd_enable="YES" Then start proftpd via the startup script You should now be able to login as a user you created and you should only see your directory you should not be able to go back from /home/myuser to /home for instance This is great for keeping clients in their vhost directory so that the can not traverse other directories.