Which command line create an SSH tunnel for POP and SMTP protocols?
Which command line create an SSH tunnel for POP and SMTP protocols?
Which change to your iptables rules could alleviate the problem?
An iptables firewall was configured to use the target MASQUERADE to share a dedicated wireless connection to the Internet with a few hosts on the local network.
The Internet connection becomes very unstable in rainy days and users complain their connections drop when downloading e-mail or large files, while web browsing seems to be working fine.
Which change to your iptables rules could alleviate the problem?
Which of the following can be the reason for connecting to a remote host on the same LAN using ssh public-key
Connecting to a remote host on the same LAN using ssh public-key authentication works but forwarding X11 doesn’t. The remote host allows access to both services. Which of the following can be the reason for that behaviour?
Which THREE of the following actions should be considered when a FTP chroot jail is created?
Which THREE of the following actions should be considered when a FTP chroot jail is created?
Which of the following commands to be able to access the server with the IP address 10.12.34.56 using HTTPS?
To be able to access the server with the IP address 10.12.34.56 using HTTPS, a rule for iptables has to be written. Given that the client host’s IP address is 192.168.43.12, which of the following commands is correct?
When the default policy for the iptables INPUT chain is set to DROP, why should a rule allowing traffic to loc
When the default policy for the iptables INPUT chain is set to DROP, why should a rule allowing traffic to localhost exist?
which command needs to disable ICMP Echo-Request packets sent to its broadcast address?
A server is being used as a smurf amplifier, whereby it is responding to ICMP Echo-Request packets sent to its broadcast address. To disable this, which command needs to be run?
Which network service or protocol was used?
The following is an excerpt from the output of tcpdump -nli eth1 ‘udp’:
13:03:17.277327 IP 192.168.123.5.1065 > 192.168.5.112.53: 43653+ A? lpi.org. (25)
13:03:17.598624 IP 192.168.5.112.53 > 192.168.123.5.1065: 43653 1/0/0 A 24.215.7.109 (41)
Which network service or protocol was used?
Which of the following can the program tripwire NOT check?
Which of the following can the program tripwire NOT check?
/bin/vsftpd: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or
A program, called vsftpd, running in a chroot jail, is giving the following error: /bin/vsftpd: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory. Which TWO of the following are possible solutions?