In the past I had set a computer to act as an Internet proxy. This would be multihomed, and running dansguardian, tinyproxy and firehol. Then webmin would be used as interface. By time I realised that this system is far from effective....
Is there some other way to setup a proxy to be placed between users and the Internet? I would like (the admin) to be able to see in which sites users go and have a lot of control on access..
We cannot access our local servers from our LAN, but we CAN access them from everywhere else!
Every once in awhile, our local access to our servers drops, but if I SSH into an external Linux account I have, I can then SSH back into the server right in the next room. We've been trying to deal... (20 Replies)
Hi Everyone!
A friend of mine is looking for a way to limit time his kids spent on the internet. I told him he should try out Squid proxy server. He now tries to find a way to limit total time spend on the internet to "X" hours a day, at any time during the day.
I remember there are built-in... (3 Replies)
I was wondering if it is possible to setup SFTP to go through the internet proxy while connecting to an internet location.
Problem: Client system is behind internet proxy. SFTP to any internet location fails as there is no documented way to configure SFTP to connect to internet locations through... (4 Replies)
Looking for some advice on how to get an internet connection from my Digital Modem.
I just installed Solaris 10 on x86. I believe that I don't have the correct configurations. Ifconfig -a shows my nic card as iprb0 so I am guessing Im ok with that since it sees it.
I just copied the same... (4 Replies)
I'm having fedora core4.I have a ADSL modem and can access through Windows.I tried setting up internet connection in linux using setup command and netconfig,but doesn't work. can anybody help me with the steps in detail.also can i use the same ip address as in windows? (7 Replies)
Hello,
Corrently we are useing winproxy to use internet. my client desktops connects to winproxy using tcpip and get the access, now we have changed windows opreating system to linux 7.1. my problem is i am able to connect internet on linux machine but now i wants all clients connect to linux... (2 Replies)
HI unix guru..
i need your help again.. i tring to setup my sun box for internet connection, i am using @home cable service i have 8 pc running different operating systems. every other computer can go online but this sun box for some reason alway give me and error,
i enter my
ip address... (1 Reply)
TFTP-PROXY(8) BSD System Manager's Manual TFTP-PROXY(8)NAME
tftp-proxy -- Internet Trivial File Transfer Protocol proxy
SYNOPSIS
tftp-proxy [-v] [-w transwait]
DESCRIPTION
tftp-proxy is a proxy for the Internet Trivial File Transfer Protocol invoked by the inetd(8) internet server. TFTP connections should be
redirected to the proxy using the pf(4) rdr command, after which the proxy connects to the server on behalf of the client.
The proxy establishes a pf(4) rdr rule using the anchor facility to rewrite packets between the client and the server. Once the rule is
established, tftp-proxy forwards the initial request from the client to the server to begin the transfer. After transwait seconds, the pf(4)
NAT state is assumed to have been established and the rdr rule is deleted and the program exits. Once the transfer between the client and
the server is completed, the NAT state will naturally expire.
Assuming the TFTP command request is from $client to $server, the proxy connected to the server using the $proxy source address, and $port is
negotiated, tftp-proxy adds the following rule to the anchor:
rdr proto udp from $server to $proxy port $port -> $client
The options are as follows:
-v Log the connection and request information to syslogd(8).
-w transwait
Number of seconds to wait for the data transmission to begin before removing the pf(4) rdr rule. The default is 2 seconds.
CONFIGURATION
To make use of the proxy, pf.conf(5) needs the following rules. The anchors are mandatory. Adjust the rules as needed for your configura-
tion.
In the NAT section:
nat on $ext_if from $int_if -> ($ext_if:0)
no nat on $ext_if to port tftp
rdr-anchor "tftp-proxy/*"
rdr on $int_if proto udp from $lan to any port tftp ->
127.0.0.1 port 6969
In the filter section, an anchor must be added to hold the pass rules:
anchor "tftp-proxy/*"
inetd(8) must be configured to spawn the proxy on the port that packets are being forwarded to by pf(4). An example inetd.conf(5) entry fol-
lows:
127.0.0.1:6969 dgram udp wait root
/usr/libexec/tftp-proxy tftp-proxy
SEE ALSO tftp(1), pf(4), pf.conf(5), ftp-proxy(8), inetd(8), syslogd(8), tftpd(8)CAVEATS
tftp-proxy chroots to /var/chroot/tftp-proxy and changes to user ``_proxy'' to drop privileges.
BSD May 31, 2007 BSD
