diff options
Diffstat (limited to 'net/tcptraceroute/pkg-descr')
| -rw-r--r-- | net/tcptraceroute/pkg-descr | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/net/tcptraceroute/pkg-descr b/net/tcptraceroute/pkg-descr index 46f41ba20522..e19cc9e077c9 100644 --- a/net/tcptraceroute/pkg-descr +++ b/net/tcptraceroute/pkg-descr @@ -1,18 +1,17 @@ tcptraceroute is a traceroute implementation using TCP packets. -The more traditional traceroute(8) sends out either UDP or ICMP ECHO -packets with a TTL of one, and increments the TTL until the destination -has been reached. By printing the gateways that generate ICMP time -exceeded messages along the way, it is able to determine the path -packets are taking to reach the destination. +The more traditional traceroute(8) sends out either UDP or ICMP ECHO packets +with a TTL of one, and increments the TTL until the destination has been +reached. By printing the gateways that generate ICMP time exceeded messages +along the way, it is able to determine the path packets are taking to reach the +destination. -The problem is that with the widespread use of firewalls on the modern -Internet, many of the packets that traceroute(8) sends out end up being -filtered, making it impossible to completely trace the path to the -destination. However, in many cases, these firewalls will permit inbound -TCP packets to specific ports that hosts sitting behind the firewall are -listening for connections on. By sending out TCP SYN packets instead of -UDP or ICMP ECHO packets, tcptraceroute is able to bypass the most -common firewall filters. +The problem is that with the widespread use of firewalls on the modern Internet, +many of the packets that traceroute(8) sends out end up being filtered, making +it impossible to completely trace the path to the destination. However, in many +cases, these firewalls will permit inbound TCP packets to specific ports that +hosts sitting behind the firewall are listening for connections on. By sending +out TCP SYN packets instead of UDP or ICMP ECHO packets, tcptraceroute is able +to bypass the most common firewall filters. WWW: https://github.com/mct/tcptraceroute |